./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 12:16:00,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:16:00,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:16:00,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:16:00,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:16:00,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:16:00,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:16:00,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:16:00,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:16:00,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:16:00,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:16:00,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:16:00,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:16:00,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:16:00,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:16:00,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:16:00,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:16:00,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:16:00,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:16:00,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:16:00,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:16:00,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:16:00,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:16:00,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:16:00,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:16:00,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:16:00,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:16:00,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:16:00,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:16:00,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:16:00,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:16:00,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:16:00,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:16:00,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:16:00,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:16:00,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:16:00,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:16:00,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:16:00,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:16:00,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:16:00,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:16:00,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 12:16:00,890 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:16:00,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:16:00,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:16:00,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:16:00,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:16:00,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:16:00,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:16:00,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:16:00,892 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:16:00,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:16:00,892 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:16:00,892 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:16:00,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:16:00,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:16:00,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:16:00,893 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:16:00,893 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:16:00,893 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:16:00,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:16:00,893 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:16:00,893 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:16:00,894 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:16:00,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:16:00,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:16:00,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:16:00,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:16:00,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:16:00,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:16:00,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:16:00,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:16:00,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:16:00,895 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:16:00,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:16:00,896 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:16:00,896 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2022-12-13 12:16:01,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:16:01,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:16:01,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:16:01,113 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:16:01,113 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:16:01,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-12-13 12:16:03,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:16:03,871 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:16:03,871 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-12-13 12:16:03,884 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/data/efda13f8e/6ab861b2994b403f95a3b408fb58490d/FLAG2545865d1 [2022-12-13 12:16:04,254 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/data/efda13f8e/6ab861b2994b403f95a3b408fb58490d [2022-12-13 12:16:04,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:16:04,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:16:04,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:16:04,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:16:04,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:16:04,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1bd151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04, skipping insertion in model container [2022-12-13 12:16:04,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:16:04,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:16:04,596 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-12-13 12:16:04,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:16:04,611 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:16:04,649 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-12-13 12:16:04,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:16:04,686 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:16:04,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04 WrapperNode [2022-12-13 12:16:04,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:16:04,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:16:04,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:16:04,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:16:04,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,728 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-12-13 12:16:04,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:16:04,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:16:04,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:16:04,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:16:04,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,752 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:16:04,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:16:04,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:16:04,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:16:04,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04" (1/1) ... [2022-12-13 12:16:04,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:16:04,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:16:04,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:16:04,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:16:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:16:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:16:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 12:16:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:16:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:16:04,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:16:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:16:04,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:16:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:16:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 12:16:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:16:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:16:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:16:04,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:16:04,815 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:16:04,912 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:16:04,914 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:16:05,114 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:16:05,120 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:16:05,120 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 12:16:05,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:16:05 BoogieIcfgContainer [2022-12-13 12:16:05,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:16:05,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:16:05,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:16:05,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:16:05,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:16:04" (1/3) ... [2022-12-13 12:16:05,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1896703f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:16:05, skipping insertion in model container [2022-12-13 12:16:05,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:04" (2/3) ... [2022-12-13 12:16:05,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1896703f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:16:05, skipping insertion in model container [2022-12-13 12:16:05,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:16:05" (3/3) ... [2022-12-13 12:16:05,127 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2022-12-13 12:16:05,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:16:05,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 12:16:05,141 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:16:05,215 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:16:05,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 147 transitions, 310 flow [2022-12-13 12:16:05,286 INFO L130 PetriNetUnfolder]: 10/145 cut-off events. [2022-12-13 12:16:05,286 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:16:05,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 145 events. 10/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 184 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 90. Up to 3 conditions per place. [2022-12-13 12:16:05,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 147 transitions, 310 flow [2022-12-13 12:16:05,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 140 transitions, 292 flow [2022-12-13 12:16:05,302 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:16:05,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 140 transitions, 292 flow [2022-12-13 12:16:05,314 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 140 transitions, 292 flow [2022-12-13 12:16:05,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 140 transitions, 292 flow [2022-12-13 12:16:05,348 INFO L130 PetriNetUnfolder]: 10/140 cut-off events. [2022-12-13 12:16:05,348 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:16:05,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 140 events. 10/140 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 90. Up to 3 conditions per place. [2022-12-13 12:16:05,351 INFO L119 LiptonReduction]: Number of co-enabled transitions 2314 [2022-12-13 12:16:11,188 INFO L134 LiptonReduction]: Checked pairs total: 5425 [2022-12-13 12:16:11,189 INFO L136 LiptonReduction]: Total number of compositions: 135 [2022-12-13 12:16:11,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:16:11,207 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d82e14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:16:11,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 12:16:11,209 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 12:16:11,209 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:16:11,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:11,209 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 12:16:11,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:11,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:11,213 INFO L85 PathProgramCache]: Analyzing trace with hash 557, now seen corresponding path program 1 times [2022-12-13 12:16:11,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:11,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924790214] [2022-12-13 12:16:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:11,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:11,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:11,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924790214] [2022-12-13 12:16:11,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924790214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:11,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:11,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 12:16:11,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287034144] [2022-12-13 12:16:11,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:11,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:16:11,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:16:11,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:16:11,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 282 [2022-12-13 12:16:11,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:11,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 282 [2022-12-13 12:16:11,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:11,456 INFO L130 PetriNetUnfolder]: 264/508 cut-off events. [2022-12-13 12:16:11,456 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-13 12:16:11,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 508 events. 264/508 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2406 event pairs, 168 based on Foata normal form. 24/389 useless extension candidates. Maximal degree in co-relation 828. Up to 409 conditions per place. [2022-12-13 12:16:11,463 INFO L137 encePairwiseOnDemand]: 279/282 looper letters, 28 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2022-12-13 12:16:11,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 142 flow [2022-12-13 12:16:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:16:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 12:16:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 305 transitions. [2022-12-13 12:16:11,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5407801418439716 [2022-12-13 12:16:11,477 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 305 transitions. [2022-12-13 12:16:11,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 305 transitions. [2022-12-13 12:16:11,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:11,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 305 transitions. [2022-12-13 12:16:11,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 152.5) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,492 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,494 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 92 flow. Second operand 2 states and 305 transitions. [2022-12-13 12:16:11,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 142 flow [2022-12-13 12:16:11,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:16:11,499 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 78 flow [2022-12-13 12:16:11,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2022-12-13 12:16:11,504 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2022-12-13 12:16:11,505 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 78 flow [2022-12-13 12:16:11,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:11,505 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:16:11,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:16:11,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:11,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:11,506 INFO L85 PathProgramCache]: Analyzing trace with hash 545916, now seen corresponding path program 1 times [2022-12-13 12:16:11,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:11,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991816821] [2022-12-13 12:16:11,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:11,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:11,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:11,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991816821] [2022-12-13 12:16:11,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991816821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:11,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:11,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:16:11,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023368038] [2022-12-13 12:16:11,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:11,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:11,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:11,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:11,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:11,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 282 [2022-12-13 12:16:11,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:11,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 282 [2022-12-13 12:16:11,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:11,750 INFO L130 PetriNetUnfolder]: 252/481 cut-off events. [2022-12-13 12:16:11,750 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 12:16:11,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 481 events. 252/481 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2229 event pairs, 160 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 873. Up to 385 conditions per place. [2022-12-13 12:16:11,752 INFO L137 encePairwiseOnDemand]: 278/282 looper letters, 24 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2022-12-13 12:16:11,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 126 flow [2022-12-13 12:16:11,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2022-12-13 12:16:11,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2022-12-13 12:16:11,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2022-12-13 12:16:11,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2022-12-13 12:16:11,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:11,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2022-12-13 12:16:11,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,758 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 78 flow. Second operand 3 states and 412 transitions. [2022-12-13 12:16:11,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 126 flow [2022-12-13 12:16:11,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:16:11,759 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 78 flow [2022-12-13 12:16:11,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2022-12-13 12:16:11,759 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2022-12-13 12:16:11,759 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 78 flow [2022-12-13 12:16:11,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:11,760 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:16:11,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:16:11,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:11,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:11,760 INFO L85 PathProgramCache]: Analyzing trace with hash 545917, now seen corresponding path program 1 times [2022-12-13 12:16:11,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:11,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308178750] [2022-12-13 12:16:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:11,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:11,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:11,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308178750] [2022-12-13 12:16:11,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308178750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:11,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:11,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:16:11,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308995768] [2022-12-13 12:16:11,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:11,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:11,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:11,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:11,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 282 [2022-12-13 12:16:11,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:11,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 282 [2022-12-13 12:16:11,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:11,961 INFO L130 PetriNetUnfolder]: 240/454 cut-off events. [2022-12-13 12:16:11,961 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 12:16:11,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 454 events. 240/454 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2068 event pairs, 152 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 826. Up to 363 conditions per place. [2022-12-13 12:16:11,965 INFO L137 encePairwiseOnDemand]: 278/282 looper letters, 22 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2022-12-13 12:16:11,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 122 flow [2022-12-13 12:16:11,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2022-12-13 12:16:11,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2022-12-13 12:16:11,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2022-12-13 12:16:11,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2022-12-13 12:16:11,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:11,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2022-12-13 12:16:11,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,971 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 78 flow. Second operand 3 states and 422 transitions. [2022-12-13 12:16:11,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 122 flow [2022-12-13 12:16:11,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:16:11,971 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2022-12-13 12:16:11,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2022-12-13 12:16:11,972 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2022-12-13 12:16:11,972 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2022-12-13 12:16:11,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:11,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:11,972 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:16:11,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:16:11,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:11,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:11,973 INFO L85 PathProgramCache]: Analyzing trace with hash 524636779, now seen corresponding path program 1 times [2022-12-13 12:16:11,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:11,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233525149] [2022-12-13 12:16:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:11,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:12,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:12,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233525149] [2022-12-13 12:16:12,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233525149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:12,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:12,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:16:12,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754776565] [2022-12-13 12:16:12,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:12,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:12,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:12,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:12,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:12,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 282 [2022-12-13 12:16:12,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:12,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 282 [2022-12-13 12:16:12,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:12,194 INFO L130 PetriNetUnfolder]: 180/349 cut-off events. [2022-12-13 12:16:12,194 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 12:16:12,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 349 events. 180/349 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1489 event pairs, 112 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 636. Up to 278 conditions per place. [2022-12-13 12:16:12,196 INFO L137 encePairwiseOnDemand]: 279/282 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2022-12-13 12:16:12,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 118 flow [2022-12-13 12:16:12,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2022-12-13 12:16:12,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2022-12-13 12:16:12,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2022-12-13 12:16:12,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2022-12-13 12:16:12,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:12,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2022-12-13 12:16:12,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,200 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 3 states and 420 transitions. [2022-12-13 12:16:12,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 118 flow [2022-12-13 12:16:12,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:16:12,201 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 72 flow [2022-12-13 12:16:12,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2022-12-13 12:16:12,202 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2022-12-13 12:16:12,202 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 72 flow [2022-12-13 12:16:12,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:12,203 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:16:12,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:16:12,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:12,203 INFO L85 PathProgramCache]: Analyzing trace with hash 524636780, now seen corresponding path program 1 times [2022-12-13 12:16:12,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:12,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761175033] [2022-12-13 12:16:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:12,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:12,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:12,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761175033] [2022-12-13 12:16:12,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761175033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:12,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:12,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:16:12,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724257665] [2022-12-13 12:16:12,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:12,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:16:12,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:12,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:16:12,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:16:12,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 282 [2022-12-13 12:16:12,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:12,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 282 [2022-12-13 12:16:12,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:12,382 INFO L130 PetriNetUnfolder]: 120/244 cut-off events. [2022-12-13 12:16:12,383 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 12:16:12,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 244 events. 120/244 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 950 event pairs, 72 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 446. Up to 193 conditions per place. [2022-12-13 12:16:12,384 INFO L137 encePairwiseOnDemand]: 279/282 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2022-12-13 12:16:12,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 114 flow [2022-12-13 12:16:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2022-12-13 12:16:12,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.466903073286052 [2022-12-13 12:16:12,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2022-12-13 12:16:12,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2022-12-13 12:16:12,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:12,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2022-12-13 12:16:12,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,389 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 72 flow. Second operand 3 states and 395 transitions. [2022-12-13 12:16:12,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 114 flow [2022-12-13 12:16:12,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:16:12,390 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 70 flow [2022-12-13 12:16:12,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2022-12-13 12:16:12,391 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2022-12-13 12:16:12,391 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 70 flow [2022-12-13 12:16:12,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:12,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:12,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:16:12,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:12,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:12,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1024503236, now seen corresponding path program 1 times [2022-12-13 12:16:12,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:12,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505657853] [2022-12-13 12:16:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:12,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:12,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:12,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505657853] [2022-12-13 12:16:12,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505657853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:12,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:12,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:16:12,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581622931] [2022-12-13 12:16:12,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:12,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:12,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:12,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:12,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:12,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 282 [2022-12-13 12:16:12,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:12,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 282 [2022-12-13 12:16:12,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:12,533 INFO L130 PetriNetUnfolder]: 189/435 cut-off events. [2022-12-13 12:16:12,533 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:16:12,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 435 events. 189/435 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1988 event pairs, 72 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 745. Up to 195 conditions per place. [2022-12-13 12:16:12,536 INFO L137 encePairwiseOnDemand]: 279/282 looper letters, 33 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-12-13 12:16:12,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 167 flow [2022-12-13 12:16:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:12,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2022-12-13 12:16:12,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2022-12-13 12:16:12,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2022-12-13 12:16:12,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2022-12-13 12:16:12,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:12,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2022-12-13 12:16:12,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,542 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 70 flow. Second operand 3 states and 435 transitions. [2022-12-13 12:16:12,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 167 flow [2022-12-13 12:16:12,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:16:12,543 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 78 flow [2022-12-13 12:16:12,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2022-12-13 12:16:12,544 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2022-12-13 12:16:12,544 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 78 flow [2022-12-13 12:16:12,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:12,545 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:12,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:16:12,545 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:12,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:12,546 INFO L85 PathProgramCache]: Analyzing trace with hash 824833781, now seen corresponding path program 1 times [2022-12-13 12:16:12,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:12,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216817737] [2022-12-13 12:16:12,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:12,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:12,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:12,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216817737] [2022-12-13 12:16:12,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216817737] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:12,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:12,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:16:12,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835209919] [2022-12-13 12:16:12,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:12,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:12,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:12,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:12,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:12,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 282 [2022-12-13 12:16:12,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:12,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 282 [2022-12-13 12:16:12,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:12,718 INFO L130 PetriNetUnfolder]: 297/642 cut-off events. [2022-12-13 12:16:12,719 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-12-13 12:16:12,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 642 events. 297/642 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3084 event pairs, 117 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 1202. Up to 300 conditions per place. [2022-12-13 12:16:12,722 INFO L137 encePairwiseOnDemand]: 279/282 looper letters, 35 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2022-12-13 12:16:12,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 191 flow [2022-12-13 12:16:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2022-12-13 12:16:12,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2022-12-13 12:16:12,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2022-12-13 12:16:12,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2022-12-13 12:16:12,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:12,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2022-12-13 12:16:12,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,728 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 78 flow. Second operand 3 states and 435 transitions. [2022-12-13 12:16:12,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 191 flow [2022-12-13 12:16:12,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:16:12,729 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 88 flow [2022-12-13 12:16:12,730 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2022-12-13 12:16:12,730 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2022-12-13 12:16:12,730 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 88 flow [2022-12-13 12:16:12,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:12,731 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:12,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:16:12,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:12,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:12,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1139429052, now seen corresponding path program 1 times [2022-12-13 12:16:12,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:12,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560174707] [2022-12-13 12:16:12,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:12,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:12,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:12,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560174707] [2022-12-13 12:16:12,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560174707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:16:12,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042000630] [2022-12-13 12:16:12,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:12,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:16:12,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:16:12,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:16:12,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:16:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:12,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:16:12,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:12,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:12,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:16:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:12,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042000630] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:16:12,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:16:12,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 12:16:12,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935650027] [2022-12-13 12:16:12,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:16:12,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:16:12,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:12,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:16:12,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:16:12,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 282 [2022-12-13 12:16:12,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 133.42857142857142) internal successors, (934), 7 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:12,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:12,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 282 [2022-12-13 12:16:12,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:13,296 INFO L130 PetriNetUnfolder]: 593/1323 cut-off events. [2022-12-13 12:16:13,296 INFO L131 PetriNetUnfolder]: For 270/270 co-relation queries the response was YES. [2022-12-13 12:16:13,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2522 conditions, 1323 events. 593/1323 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7115 event pairs, 42 based on Foata normal form. 74/1348 useless extension candidates. Maximal degree in co-relation 2516. Up to 168 conditions per place. [2022-12-13 12:16:13,306 INFO L137 encePairwiseOnDemand]: 275/282 looper letters, 105 selfloop transitions, 27 changer transitions 0/141 dead transitions. [2022-12-13 12:16:13,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 141 transitions, 631 flow [2022-12-13 12:16:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 12:16:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 12:16:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1806 transitions. [2022-12-13 12:16:13,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49263502454991814 [2022-12-13 12:16:13,315 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1806 transitions. [2022-12-13 12:16:13,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1806 transitions. [2022-12-13 12:16:13,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:13,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1806 transitions. [2022-12-13 12:16:13,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 138.92307692307693) internal successors, (1806), 13 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:13,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 282.0) internal successors, (3948), 14 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:13,333 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 282.0) internal successors, (3948), 14 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:13,333 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 88 flow. Second operand 13 states and 1806 transitions. [2022-12-13 12:16:13,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 141 transitions, 631 flow [2022-12-13 12:16:13,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 141 transitions, 625 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:16:13,337 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 302 flow [2022-12-13 12:16:13,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=302, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2022-12-13 12:16:13,338 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2022-12-13 12:16:13,338 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 302 flow [2022-12-13 12:16:13,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 133.42857142857142) internal successors, (934), 7 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:13,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:13,339 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:13,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:16:13,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:16:13,540 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:13,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:13,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1901067290, now seen corresponding path program 1 times [2022-12-13 12:16:13,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:13,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112228635] [2022-12-13 12:16:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:13,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:16:13,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:13,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112228635] [2022-12-13 12:16:13,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112228635] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:16:13,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030566406] [2022-12-13 12:16:13,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:13,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:16:13,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:16:13,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:16:13,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:16:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:13,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:16:13,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:16:13,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:16:13,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030566406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:13,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:16:13,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-13 12:16:13,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251720372] [2022-12-13 12:16:13,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:13,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:16:13,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:13,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:16:13,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:16:13,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 282 [2022-12-13 12:16:13,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:13,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:13,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 282 [2022-12-13 12:16:13,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:14,262 INFO L130 PetriNetUnfolder]: 2550/4433 cut-off events. [2022-12-13 12:16:14,262 INFO L131 PetriNetUnfolder]: For 5392/5392 co-relation queries the response was YES. [2022-12-13 12:16:14,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11736 conditions, 4433 events. 2550/4433 cut-off events. For 5392/5392 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 23898 event pairs, 485 based on Foata normal form. 0/4081 useless extension candidates. Maximal degree in co-relation 11721. Up to 1651 conditions per place. [2022-12-13 12:16:14,279 INFO L137 encePairwiseOnDemand]: 273/282 looper letters, 151 selfloop transitions, 18 changer transitions 0/172 dead transitions. [2022-12-13 12:16:14,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 172 transitions, 1280 flow [2022-12-13 12:16:14,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:16:14,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:16:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 992 transitions. [2022-12-13 12:16:14,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.502532928064843 [2022-12-13 12:16:14,282 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 992 transitions. [2022-12-13 12:16:14,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 992 transitions. [2022-12-13 12:16:14,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:14,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 992 transitions. [2022-12-13 12:16:14,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 141.71428571428572) internal successors, (992), 7 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:14,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:14,285 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:14,286 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 302 flow. Second operand 7 states and 992 transitions. [2022-12-13 12:16:14,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 172 transitions, 1280 flow [2022-12-13 12:16:14,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 172 transitions, 1179 flow, removed 33 selfloop flow, removed 2 redundant places. [2022-12-13 12:16:14,309 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 408 flow [2022-12-13 12:16:14,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2022-12-13 12:16:14,309 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2022-12-13 12:16:14,309 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 408 flow [2022-12-13 12:16:14,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:14,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:14,310 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:14,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:16:14,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:16:14,510 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:14,511 INFO L85 PathProgramCache]: Analyzing trace with hash -269786452, now seen corresponding path program 2 times [2022-12-13 12:16:14,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:14,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390024890] [2022-12-13 12:16:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:14,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 12:16:14,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:14,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390024890] [2022-12-13 12:16:14,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390024890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:14,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:14,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:16:14,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444367120] [2022-12-13 12:16:14,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:14,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:14,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:14,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:14,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:14,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 282 [2022-12-13 12:16:14,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:14,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:14,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 282 [2022-12-13 12:16:14,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:14,976 INFO L130 PetriNetUnfolder]: 813/1815 cut-off events. [2022-12-13 12:16:14,976 INFO L131 PetriNetUnfolder]: For 3960/3960 co-relation queries the response was YES. [2022-12-13 12:16:14,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5707 conditions, 1815 events. 813/1815 cut-off events. For 3960/3960 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 10215 event pairs, 177 based on Foata normal form. 198/2012 useless extension candidates. Maximal degree in co-relation 5686. Up to 794 conditions per place. [2022-12-13 12:16:14,989 INFO L137 encePairwiseOnDemand]: 274/282 looper letters, 47 selfloop transitions, 20 changer transitions 0/80 dead transitions. [2022-12-13 12:16:14,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 595 flow [2022-12-13 12:16:14,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:14,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2022-12-13 12:16:14,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49527186761229314 [2022-12-13 12:16:14,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2022-12-13 12:16:14,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2022-12-13 12:16:14,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:14,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2022-12-13 12:16:14,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:14,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:14,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:14,993 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 408 flow. Second operand 3 states and 419 transitions. [2022-12-13 12:16:14,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 595 flow [2022-12-13 12:16:15,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 80 transitions, 577 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-13 12:16:15,002 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 369 flow [2022-12-13 12:16:15,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2022-12-13 12:16:15,002 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2022-12-13 12:16:15,003 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 369 flow [2022-12-13 12:16:15,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:15,003 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:15,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:16:15,003 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:15,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1051556862, now seen corresponding path program 3 times [2022-12-13 12:16:15,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:15,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230140302] [2022-12-13 12:16:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:15,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 12:16:15,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:15,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230140302] [2022-12-13 12:16:15,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230140302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:15,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:15,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:16:15,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334599811] [2022-12-13 12:16:15,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:15,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:15,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:15,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:15,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:15,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 282 [2022-12-13 12:16:15,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:15,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 282 [2022-12-13 12:16:15,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:15,209 INFO L130 PetriNetUnfolder]: 597/1255 cut-off events. [2022-12-13 12:16:15,209 INFO L131 PetriNetUnfolder]: For 2796/2800 co-relation queries the response was YES. [2022-12-13 12:16:15,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4400 conditions, 1255 events. 597/1255 cut-off events. For 2796/2800 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6068 event pairs, 146 based on Foata normal form. 54/1303 useless extension candidates. Maximal degree in co-relation 4380. Up to 849 conditions per place. [2022-12-13 12:16:15,220 INFO L137 encePairwiseOnDemand]: 277/282 looper letters, 61 selfloop transitions, 3 changer transitions 3/73 dead transitions. [2022-12-13 12:16:15,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 557 flow [2022-12-13 12:16:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2022-12-13 12:16:15,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2022-12-13 12:16:15,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2022-12-13 12:16:15,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2022-12-13 12:16:15,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:15,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2022-12-13 12:16:15,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,227 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 369 flow. Second operand 3 states and 432 transitions. [2022-12-13 12:16:15,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 557 flow [2022-12-13 12:16:15,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:16:15,237 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 322 flow [2022-12-13 12:16:15,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2022-12-13 12:16:15,237 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2022-12-13 12:16:15,238 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 322 flow [2022-12-13 12:16:15,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:15,238 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:15,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:16:15,238 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:15,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash 703665086, now seen corresponding path program 4 times [2022-12-13 12:16:15,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:15,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816262754] [2022-12-13 12:16:15,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:15,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:16:15,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:15,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816262754] [2022-12-13 12:16:15,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816262754] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:16:15,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281583537] [2022-12-13 12:16:15,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:16:15,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:16:15,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:16:15,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:16:15,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:16:15,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:16:15,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:16:15,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:16:15,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:16:15,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:16:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:16:15,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281583537] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:16:15,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:16:15,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-12-13 12:16:15,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725806028] [2022-12-13 12:16:15,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:16:15,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:16:15,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:15,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:16:15,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:16:15,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 282 [2022-12-13 12:16:15,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 322 flow. Second operand has 6 states, 6 states have (on average 137.33333333333334) internal successors, (824), 6 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:15,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 282 [2022-12-13 12:16:15,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:15,675 INFO L130 PetriNetUnfolder]: 487/1163 cut-off events. [2022-12-13 12:16:15,675 INFO L131 PetriNetUnfolder]: For 2562/2592 co-relation queries the response was YES. [2022-12-13 12:16:15,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3637 conditions, 1163 events. 487/1163 cut-off events. For 2562/2592 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5975 event pairs, 90 based on Foata normal form. 60/1215 useless extension candidates. Maximal degree in co-relation 3616. Up to 258 conditions per place. [2022-12-13 12:16:15,679 INFO L137 encePairwiseOnDemand]: 278/282 looper letters, 61 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2022-12-13 12:16:15,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 630 flow [2022-12-13 12:16:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:16:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:16:15,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 715 transitions. [2022-12-13 12:16:15,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2022-12-13 12:16:15,682 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 715 transitions. [2022-12-13 12:16:15,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 715 transitions. [2022-12-13 12:16:15,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:15,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 715 transitions. [2022-12-13 12:16:15,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,687 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,687 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 322 flow. Second operand 5 states and 715 transitions. [2022-12-13 12:16:15,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 630 flow [2022-12-13 12:16:15,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 624 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:16:15,694 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 354 flow [2022-12-13 12:16:15,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2022-12-13 12:16:15,694 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2022-12-13 12:16:15,694 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 354 flow [2022-12-13 12:16:15,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.33333333333334) internal successors, (824), 6 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:15,695 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:15,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:16:15,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 12:16:15,896 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash -83510981, now seen corresponding path program 5 times [2022-12-13 12:16:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:15,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211552511] [2022-12-13 12:16:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:15,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:16:16,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211552511] [2022-12-13 12:16:16,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211552511] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:16:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773274510] [2022-12-13 12:16:16,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:16:16,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:16:16,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:16:16,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:16:16,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:16:16,194 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 12:16:16,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:16:16,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:16:16,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 12:16:16,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:16:16,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773274510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:16,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:16:16,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-12-13 12:16:16,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624081794] [2022-12-13 12:16:16,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:16,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:16:16,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:16:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:16:16,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 282 [2022-12-13 12:16:16,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:16,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:16,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 282 [2022-12-13 12:16:16,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:16,535 INFO L130 PetriNetUnfolder]: 677/1348 cut-off events. [2022-12-13 12:16:16,535 INFO L131 PetriNetUnfolder]: For 3872/3872 co-relation queries the response was YES. [2022-12-13 12:16:16,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4867 conditions, 1348 events. 677/1348 cut-off events. For 3872/3872 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5925 event pairs, 170 based on Foata normal form. 24/1370 useless extension candidates. Maximal degree in co-relation 4845. Up to 520 conditions per place. [2022-12-13 12:16:16,543 INFO L137 encePairwiseOnDemand]: 271/282 looper letters, 92 selfloop transitions, 20 changer transitions 0/114 dead transitions. [2022-12-13 12:16:16,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 114 transitions, 959 flow [2022-12-13 12:16:16,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:16:16,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:16:16,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1069 transitions. [2022-12-13 12:16:16,546 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47384751773049644 [2022-12-13 12:16:16,546 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1069 transitions. [2022-12-13 12:16:16,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1069 transitions. [2022-12-13 12:16:16,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:16,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1069 transitions. [2022-12-13 12:16:16,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.625) internal successors, (1069), 8 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:16,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 282.0) internal successors, (2538), 9 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:16,553 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 282.0) internal successors, (2538), 9 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:16,553 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 354 flow. Second operand 8 states and 1069 transitions. [2022-12-13 12:16:16,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 114 transitions, 959 flow [2022-12-13 12:16:16,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 114 transitions, 914 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-13 12:16:16,563 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 415 flow [2022-12-13 12:16:16,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=415, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2022-12-13 12:16:16,564 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2022-12-13 12:16:16,564 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 415 flow [2022-12-13 12:16:16,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:16,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:16,565 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:16,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:16:16,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 12:16:16,766 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:16,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2119328357, now seen corresponding path program 6 times [2022-12-13 12:16:16,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:16,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955744604] [2022-12-13 12:16:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 12:16:17,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:17,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955744604] [2022-12-13 12:16:17,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955744604] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:16:17,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916562244] [2022-12-13 12:16:17,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:16:17,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:16:17,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:16:17,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:16:17,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:16:17,245 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-12-13 12:16:17,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:16:17,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 12:16:17,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 12:16:17,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:16:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 12:16:17,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916562244] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:16:17,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:16:17,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-12-13 12:16:17,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782026971] [2022-12-13 12:16:17,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:16:17,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:16:17,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:17,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:16:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:16:17,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 282 [2022-12-13 12:16:17,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 415 flow. Second operand has 6 states, 6 states have (on average 130.83333333333334) internal successors, (785), 6 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:17,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:17,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 282 [2022-12-13 12:16:17,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:17,637 INFO L130 PetriNetUnfolder]: 447/918 cut-off events. [2022-12-13 12:16:17,637 INFO L131 PetriNetUnfolder]: For 2643/2643 co-relation queries the response was YES. [2022-12-13 12:16:17,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3557 conditions, 918 events. 447/918 cut-off events. For 2643/2643 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3405 event pairs, 116 based on Foata normal form. 28/944 useless extension candidates. Maximal degree in co-relation 3532. Up to 355 conditions per place. [2022-12-13 12:16:17,645 INFO L137 encePairwiseOnDemand]: 273/282 looper letters, 76 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2022-12-13 12:16:17,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 93 transitions, 773 flow [2022-12-13 12:16:17,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:16:17,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:16:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1067 transitions. [2022-12-13 12:16:17,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4729609929078014 [2022-12-13 12:16:17,647 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1067 transitions. [2022-12-13 12:16:17,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1067 transitions. [2022-12-13 12:16:17,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:17,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1067 transitions. [2022-12-13 12:16:17,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.375) internal successors, (1067), 8 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:17,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 282.0) internal successors, (2538), 9 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:17,650 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 282.0) internal successors, (2538), 9 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:17,650 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 415 flow. Second operand 8 states and 1067 transitions. [2022-12-13 12:16:17,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 93 transitions, 773 flow [2022-12-13 12:16:17,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 93 transitions, 723 flow, removed 7 selfloop flow, removed 9 redundant places. [2022-12-13 12:16:17,655 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 329 flow [2022-12-13 12:16:17,655 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=329, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2022-12-13 12:16:17,656 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2022-12-13 12:16:17,656 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 329 flow [2022-12-13 12:16:17,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.83333333333334) internal successors, (785), 6 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:17,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:17,656 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:17,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:16:17,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 12:16:17,857 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:17,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:17,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2015730737, now seen corresponding path program 7 times [2022-12-13 12:16:17,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:17,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898076335] [2022-12-13 12:16:17,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:17,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:16:17,960 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:16:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:16:18,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:16:18,018 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:16:18,019 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-12-13 12:16:18,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-12-13 12:16:18,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-13 12:16:18,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-13 12:16:18,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-12-13 12:16:18,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-12-13 12:16:18,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-13 12:16:18,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-13 12:16:18,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-12-13 12:16:18,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-12-13 12:16:18,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-13 12:16:18,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-13 12:16:18,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:16:18,021 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:18,025 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 12:16:18,025 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 12:16:18,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:16:18 BasicIcfg [2022-12-13 12:16:18,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 12:16:18,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 12:16:18,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 12:16:18,062 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 12:16:18,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:16:05" (3/4) ... [2022-12-13 12:16:18,065 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 12:16:18,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 12:16:18,066 INFO L158 Benchmark]: Toolchain (without parser) took 13805.59ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 104.5MB in the beginning and 74.5MB in the end (delta: 29.9MB). Peak memory consumption was 97.5MB. Max. memory is 16.1GB. [2022-12-13 12:16:18,066 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 112.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:16:18,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.40ms. Allocated memory is still 140.5MB. Free memory was 104.5MB in the beginning and 77.9MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-13 12:16:18,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.17ms. Allocated memory is still 140.5MB. Free memory was 77.9MB in the beginning and 75.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:16:18,067 INFO L158 Benchmark]: Boogie Preprocessor took 27.25ms. Allocated memory is still 140.5MB. Free memory was 75.6MB in the beginning and 73.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:16:18,067 INFO L158 Benchmark]: RCFGBuilder took 364.99ms. Allocated memory is still 140.5MB. Free memory was 73.7MB in the beginning and 56.2MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 12:16:18,068 INFO L158 Benchmark]: TraceAbstraction took 12938.21ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 55.3MB in the beginning and 74.5MB in the end (delta: -19.2MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2022-12-13 12:16:18,068 INFO L158 Benchmark]: Witness Printer took 3.55ms. Allocated memory is still 205.5MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:16:18,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 112.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.40ms. Allocated memory is still 140.5MB. Free memory was 104.5MB in the beginning and 77.9MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.17ms. Allocated memory is still 140.5MB. Free memory was 77.9MB in the beginning and 75.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.25ms. Allocated memory is still 140.5MB. Free memory was 75.6MB in the beginning and 73.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 364.99ms. Allocated memory is still 140.5MB. Free memory was 73.7MB in the beginning and 56.2MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 12938.21ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 55.3MB in the beginning and 74.5MB in the end (delta: -19.2MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. * Witness Printer took 3.55ms. Allocated memory is still 205.5MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 137 PlacesBefore, 42 PlacesAfterwards, 140 TransitionsBefore, 40 TransitionsAfterwards, 2314 CoEnabledTransitionPairs, 7 FixpointIterations, 76 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 135 TotalNumberOfCompositions, 5425 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3519, independent: 3353, independent conditional: 0, independent unconditional: 3353, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1225, independent: 1201, independent conditional: 0, independent unconditional: 1201, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3519, independent: 2152, independent conditional: 0, independent unconditional: 2152, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 1225, unknown conditional: 0, unknown unconditional: 1225] , Statistics on independence cache: Total cache size (in pairs): 198, Positive cache size: 183, Positive conditional cache size: 0, Positive unconditional cache size: 183, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 919]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 919. Possible FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=9, t1={7:0}, t2={6:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=10, t1={7:0}, t2={6:0}, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L915] 0 \read(t1) VAL [\read(t1)=9, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L882] 1 num++ [L892] COND TRUE 2 j < 3 [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=3] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=9, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L916] 0 \read(t2) VAL [\read(t2)=10, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L897] 2 num-- [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=10, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 906]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 183 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.8s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 906 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 644 mSDsluCounter, 85 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 95 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1515 IncrementalHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 95 mSolverCounterUnsat, 30 mSDtfsCounter, 1515 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 368 GetRequests, 304 SyntacticMatches, 15 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=415occurred in iteration=13, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 567 NumberOfCodeBlocks, 563 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 609 ConstructedInterpolants, 0 QuantifiedInterpolants, 1429 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1480 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 22 InterpolantComputations, 11 PerfectInterpolantSequences, 328/384 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 12:16:18,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 12:16:19,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:16:19,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:16:19,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:16:19,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:16:19,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:16:19,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:16:19,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:16:19,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:16:19,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:16:19,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:16:19,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:16:19,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:16:19,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:16:19,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:16:19,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:16:19,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:16:19,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:16:19,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:16:19,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:16:19,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:16:19,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:16:19,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:16:19,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:16:19,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:16:19,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:16:19,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:16:19,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:16:19,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:16:19,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:16:19,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:16:19,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:16:19,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:16:19,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:16:19,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:16:19,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:16:19,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:16:19,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:16:19,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:16:19,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:16:19,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:16:19,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 12:16:19,938 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:16:19,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:16:19,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:16:19,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:16:19,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:16:19,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:16:19,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:16:19,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:16:19,940 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:16:19,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:16:19,941 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:16:19,941 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:16:19,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:16:19,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:16:19,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:16:19,942 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:16:19,942 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:16:19,942 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:16:19,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:16:19,942 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:16:19,942 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 12:16:19,942 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 12:16:19,943 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:16:19,943 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:16:19,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:16:19,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:16:19,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:16:19,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:16:19,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:16:19,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:16:19,944 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 12:16:19,944 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 12:16:19,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:16:19,944 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:16:19,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:16:19,945 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 12:16:19,945 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:16:19,945 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2022-12-13 12:16:20,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:16:20,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:16:20,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:16:20,201 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:16:20,202 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:16:20,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-12-13 12:16:22,908 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:16:23,123 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:16:23,124 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-12-13 12:16:23,136 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/data/a6faa8dbb/446eeccc8a0345b6b8886a7d2d67eae7/FLAGc94cf7b51 [2022-12-13 12:16:23,150 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/data/a6faa8dbb/446eeccc8a0345b6b8886a7d2d67eae7 [2022-12-13 12:16:23,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:16:23,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:16:23,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:16:23,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:16:23,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:16:23,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a4bdfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23, skipping insertion in model container [2022-12-13 12:16:23,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:16:23,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:16:23,572 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-12-13 12:16:23,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:16:23,593 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:16:23,633 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-12-13 12:16:23,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:16:23,695 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:16:23,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23 WrapperNode [2022-12-13 12:16:23,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:16:23,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:16:23,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:16:23,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:16:23,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,743 INFO L138 Inliner]: procedures = 250, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2022-12-13 12:16:23,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:16:23,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:16:23,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:16:23,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:16:23,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,772 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:16:23,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:16:23,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:16:23,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:16:23,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23" (1/1) ... [2022-12-13 12:16:23,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:16:23,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:16:23,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:16:23,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:16:23,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 12:16:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:16:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:16:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 12:16:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 12:16:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-12-13 12:16:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 12:16:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-13 12:16:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:16:23,839 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:16:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:16:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:16:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 12:16:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:16:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:16:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:16:23,841 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:16:23,968 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:16:23,970 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:16:24,263 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:16:24,271 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:16:24,272 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 12:16:24,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:16:24 BoogieIcfgContainer [2022-12-13 12:16:24,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:16:24,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:16:24,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:16:24,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:16:24,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:16:23" (1/3) ... [2022-12-13 12:16:24,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f734b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:16:24, skipping insertion in model container [2022-12-13 12:16:24,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:16:23" (2/3) ... [2022-12-13 12:16:24,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f734b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:16:24, skipping insertion in model container [2022-12-13 12:16:24,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:16:24" (3/3) ... [2022-12-13 12:16:24,282 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2022-12-13 12:16:24,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:16:24,302 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 12:16:24,302 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:16:24,368 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:16:24,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 148 transitions, 312 flow [2022-12-13 12:16:24,455 INFO L130 PetriNetUnfolder]: 10/146 cut-off events. [2022-12-13 12:16:24,455 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:16:24,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 146 events. 10/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 183 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 91. Up to 3 conditions per place. [2022-12-13 12:16:24,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 148 transitions, 312 flow [2022-12-13 12:16:24,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 141 transitions, 294 flow [2022-12-13 12:16:24,465 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:16:24,472 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 141 transitions, 294 flow [2022-12-13 12:16:24,474 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 141 transitions, 294 flow [2022-12-13 12:16:24,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 141 transitions, 294 flow [2022-12-13 12:16:24,495 INFO L130 PetriNetUnfolder]: 10/141 cut-off events. [2022-12-13 12:16:24,495 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:16:24,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 141 events. 10/141 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 91. Up to 3 conditions per place. [2022-12-13 12:16:24,497 INFO L119 LiptonReduction]: Number of co-enabled transitions 2314 [2022-12-13 12:16:48,275 INFO L134 LiptonReduction]: Checked pairs total: 5529 [2022-12-13 12:16:48,275 INFO L136 LiptonReduction]: Total number of compositions: 137 [2022-12-13 12:16:48,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:16:48,289 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a7b1f9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:16:48,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 12:16:48,291 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 12:16:48,291 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:16:48,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:48,291 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 12:16:48,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:48,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:48,295 INFO L85 PathProgramCache]: Analyzing trace with hash 559, now seen corresponding path program 1 times [2022-12-13 12:16:48,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:48,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383485941] [2022-12-13 12:16:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:48,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:48,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:48,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:48,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 12:16:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:48,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 12:16:48,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:48,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:16:48,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:48,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383485941] [2022-12-13 12:16:48,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383485941] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:48,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:48,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 12:16:48,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22818970] [2022-12-13 12:16:48,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:48,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:16:48,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:48,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:16:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:16:48,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 285 [2022-12-13 12:16:48,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 90 flow. Second operand has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:48,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:48,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 285 [2022-12-13 12:16:48,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:48,604 INFO L130 PetriNetUnfolder]: 307/551 cut-off events. [2022-12-13 12:16:48,604 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 12:16:48,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 551 events. 307/551 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2477 event pairs, 203 based on Foata normal form. 28/428 useless extension candidates. Maximal degree in co-relation 922. Up to 476 conditions per place. [2022-12-13 12:16:48,609 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 29 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2022-12-13 12:16:48,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 142 flow [2022-12-13 12:16:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:16:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 12:16:48,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 308 transitions. [2022-12-13 12:16:48,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5403508771929825 [2022-12-13 12:16:48,619 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 308 transitions. [2022-12-13 12:16:48,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 308 transitions. [2022-12-13 12:16:48,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:48,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 308 transitions. [2022-12-13 12:16:48,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 154.0) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:48,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:48,628 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:48,629 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 90 flow. Second operand 2 states and 308 transitions. [2022-12-13 12:16:48,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 142 flow [2022-12-13 12:16:48,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:16:48,634 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 76 flow [2022-12-13 12:16:48,636 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2022-12-13 12:16:48,640 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -5 predicate places. [2022-12-13 12:16:48,641 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 76 flow [2022-12-13 12:16:48,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:48,641 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:48,641 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:16:48,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:16:48,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:48,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:48,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:48,845 INFO L85 PathProgramCache]: Analyzing trace with hash 551675, now seen corresponding path program 1 times [2022-12-13 12:16:48,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:48,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822222634] [2022-12-13 12:16:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:48,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:48,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:48,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:48,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 12:16:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:48,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:16:48,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:49,018 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 12:16:49,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-13 12:16:49,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:49,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:16:49,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:49,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822222634] [2022-12-13 12:16:49,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822222634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:49,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:49,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:16:49,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045198248] [2022-12-13 12:16:49,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:49,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:49,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:49,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:49,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:49,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 285 [2022-12-13 12:16:49,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:49,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:49,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 285 [2022-12-13 12:16:49,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:49,263 INFO L130 PetriNetUnfolder]: 294/523 cut-off events. [2022-12-13 12:16:49,263 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 12:16:49,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 523 events. 294/523 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2326 event pairs, 194 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 980. Up to 450 conditions per place. [2022-12-13 12:16:49,267 INFO L137 encePairwiseOnDemand]: 281/285 looper letters, 25 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2022-12-13 12:16:49,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 126 flow [2022-12-13 12:16:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:49,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2022-12-13 12:16:49,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5005847953216375 [2022-12-13 12:16:49,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2022-12-13 12:16:49,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2022-12-13 12:16:49,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:49,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2022-12-13 12:16:49,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:49,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:49,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:49,276 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 76 flow. Second operand 3 states and 428 transitions. [2022-12-13 12:16:49,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 126 flow [2022-12-13 12:16:49,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:16:49,278 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 76 flow [2022-12-13 12:16:49,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2022-12-13 12:16:49,279 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -5 predicate places. [2022-12-13 12:16:49,279 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 76 flow [2022-12-13 12:16:49,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:49,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:49,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:16:49,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 12:16:49,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:49,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:49,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:49,481 INFO L85 PathProgramCache]: Analyzing trace with hash 551677, now seen corresponding path program 1 times [2022-12-13 12:16:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:49,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793583251] [2022-12-13 12:16:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:49,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:49,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:49,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:49,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 12:16:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:49,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:16:49,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:49,556 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 12:16:49,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-12-13 12:16:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:49,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:16:49,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:49,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793583251] [2022-12-13 12:16:49,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793583251] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:49,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:49,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:16:49,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902359881] [2022-12-13 12:16:49,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:49,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:49,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:49,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:49,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 285 [2022-12-13 12:16:49,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:49,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:49,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 285 [2022-12-13 12:16:49,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:49,740 INFO L130 PetriNetUnfolder]: 281/495 cut-off events. [2022-12-13 12:16:49,740 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 12:16:49,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 495 events. 281/495 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2141 event pairs, 185 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 930. Up to 426 conditions per place. [2022-12-13 12:16:49,743 INFO L137 encePairwiseOnDemand]: 281/285 looper letters, 23 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2022-12-13 12:16:49,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 122 flow [2022-12-13 12:16:49,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:49,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2022-12-13 12:16:49,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2022-12-13 12:16:49,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2022-12-13 12:16:49,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2022-12-13 12:16:49,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:49,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2022-12-13 12:16:49,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:49,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:49,750 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:49,750 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 76 flow. Second operand 3 states and 414 transitions. [2022-12-13 12:16:49,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 122 flow [2022-12-13 12:16:49,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:16:49,751 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 72 flow [2022-12-13 12:16:49,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2022-12-13 12:16:49,752 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -7 predicate places. [2022-12-13 12:16:49,752 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 72 flow [2022-12-13 12:16:49,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:49,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:49,752 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:16:49,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 12:16:49,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:49,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:49,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:49,954 INFO L85 PathProgramCache]: Analyzing trace with hash 530173230, now seen corresponding path program 1 times [2022-12-13 12:16:49,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:49,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664097819] [2022-12-13 12:16:49,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:49,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:49,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:49,955 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:49,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 12:16:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:50,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:16:50,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:50,060 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 12:16:50,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-13 12:16:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:50,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:16:50,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:50,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664097819] [2022-12-13 12:16:50,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664097819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:50,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:50,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:16:50,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705013262] [2022-12-13 12:16:50,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:50,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:50,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:50,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:50,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:50,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 285 [2022-12-13 12:16:50,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:50,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:50,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 285 [2022-12-13 12:16:50,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:50,235 INFO L130 PetriNetUnfolder]: 210/379 cut-off events. [2022-12-13 12:16:50,235 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 12:16:50,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 379 events. 210/379 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1548 event pairs, 136 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 713. Up to 325 conditions per place. [2022-12-13 12:16:50,236 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 22 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2022-12-13 12:16:50,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 118 flow [2022-12-13 12:16:50,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:50,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2022-12-13 12:16:50,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4818713450292398 [2022-12-13 12:16:50,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2022-12-13 12:16:50,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2022-12-13 12:16:50,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:50,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2022-12-13 12:16:50,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:50,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:50,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:50,241 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 72 flow. Second operand 3 states and 412 transitions. [2022-12-13 12:16:50,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 118 flow [2022-12-13 12:16:50,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:16:50,242 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 70 flow [2022-12-13 12:16:50,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2022-12-13 12:16:50,242 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2022-12-13 12:16:50,243 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 70 flow [2022-12-13 12:16:50,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:50,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:50,243 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:16:50,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 12:16:50,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:50,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:50,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash 530173231, now seen corresponding path program 1 times [2022-12-13 12:16:50,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:50,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730736326] [2022-12-13 12:16:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:50,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:50,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:50,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:50,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 12:16:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:50,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:16:50,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:50,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:16:50,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-13 12:16:50,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 12:16:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:50,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:16:50,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:50,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730736326] [2022-12-13 12:16:50,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730736326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:50,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:50,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:16:50,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004507961] [2022-12-13 12:16:50,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:50,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:50,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:50,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:50,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:50,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 285 [2022-12-13 12:16:50,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:50,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:50,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 285 [2022-12-13 12:16:50,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:50,877 INFO L130 PetriNetUnfolder]: 139/263 cut-off events. [2022-12-13 12:16:50,877 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 12:16:50,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 263 events. 139/263 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 999 event pairs, 87 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 496. Up to 224 conditions per place. [2022-12-13 12:16:50,879 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 21 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2022-12-13 12:16:50,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 114 flow [2022-12-13 12:16:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2022-12-13 12:16:50,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2022-12-13 12:16:50,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2022-12-13 12:16:50,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2022-12-13 12:16:50,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:50,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2022-12-13 12:16:50,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:50,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:50,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:50,885 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 70 flow. Second operand 3 states and 423 transitions. [2022-12-13 12:16:50,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 114 flow [2022-12-13 12:16:50,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:16:50,886 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 68 flow [2022-12-13 12:16:50,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2022-12-13 12:16:50,887 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -9 predicate places. [2022-12-13 12:16:50,887 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 68 flow [2022-12-13 12:16:50,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:50,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:50,888 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:50,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-13 12:16:51,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:51,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:51,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:51,089 INFO L85 PathProgramCache]: Analyzing trace with hash -851802724, now seen corresponding path program 1 times [2022-12-13 12:16:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:51,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311397023] [2022-12-13 12:16:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:51,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:51,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:51,091 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:51,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 12:16:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:51,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 12:16:51,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:51,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:16:51,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:51,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311397023] [2022-12-13 12:16:51,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311397023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:51,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:51,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:16:51,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408333904] [2022-12-13 12:16:51,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:51,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:51,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:51,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 285 [2022-12-13 12:16:51,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:51,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:51,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 285 [2022-12-13 12:16:51,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:51,363 INFO L130 PetriNetUnfolder]: 219/463 cut-off events. [2022-12-13 12:16:51,363 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:16:51,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 463 events. 219/463 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2096 event pairs, 81 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 821. Up to 226 conditions per place. [2022-12-13 12:16:51,366 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 35 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-12-13 12:16:51,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 171 flow [2022-12-13 12:16:51,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:51,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:51,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-12-13 12:16:51,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2022-12-13 12:16:51,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-12-13 12:16:51,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-12-13 12:16:51,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:51,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-12-13 12:16:51,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:51,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:51,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:51,375 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 68 flow. Second operand 3 states and 440 transitions. [2022-12-13 12:16:51,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 171 flow [2022-12-13 12:16:51,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:16:51,376 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 76 flow [2022-12-13 12:16:51,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2022-12-13 12:16:51,377 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2022-12-13 12:16:51,377 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 76 flow [2022-12-13 12:16:51,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:51,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:51,378 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:51,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 12:16:51,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:51,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:51,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:51,579 INFO L85 PathProgramCache]: Analyzing trace with hash 879415276, now seen corresponding path program 1 times [2022-12-13 12:16:51,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:51,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164183709] [2022-12-13 12:16:51,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:51,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:51,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:51,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:51,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 12:16:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:51,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 12:16:51,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:51,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:16:51,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:51,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164183709] [2022-12-13 12:16:51,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164183709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:51,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:51,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:16:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152217082] [2022-12-13 12:16:51,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:51,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:51,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:51,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:51,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 285 [2022-12-13 12:16:51,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:51,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:51,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 285 [2022-12-13 12:16:51,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:51,931 INFO L130 PetriNetUnfolder]: 357/695 cut-off events. [2022-12-13 12:16:51,931 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-12-13 12:16:51,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 695 events. 357/695 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3193 event pairs, 141 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 1371. Up to 348 conditions per place. [2022-12-13 12:16:51,934 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 37 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2022-12-13 12:16:51,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 46 transitions, 195 flow [2022-12-13 12:16:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:51,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:51,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-12-13 12:16:51,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2022-12-13 12:16:51,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-12-13 12:16:51,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-12-13 12:16:51,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:51,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-12-13 12:16:51,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:51,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:51,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:51,937 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 76 flow. Second operand 3 states and 440 transitions. [2022-12-13 12:16:51,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 46 transitions, 195 flow [2022-12-13 12:16:51,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:16:51,938 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 86 flow [2022-12-13 12:16:51,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2022-12-13 12:16:51,939 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -6 predicate places. [2022-12-13 12:16:51,939 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 86 flow [2022-12-13 12:16:51,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:51,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:51,939 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:51,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 12:16:52,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:52,141 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:52,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:52,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1476833316, now seen corresponding path program 1 times [2022-12-13 12:16:52,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:52,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102760039] [2022-12-13 12:16:52,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:52,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:52,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:52,147 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:52,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 12:16:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:52,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:16:52,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:52,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-12-13 12:16:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:52,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:16:52,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:52,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102760039] [2022-12-13 12:16:52,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102760039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:52,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:52,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:16:52,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381951098] [2022-12-13 12:16:52,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:52,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:52,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:52,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:52,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:52,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 285 [2022-12-13 12:16:52,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:52,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:52,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 285 [2022-12-13 12:16:52,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:52,481 INFO L130 PetriNetUnfolder]: 309/689 cut-off events. [2022-12-13 12:16:52,482 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-12-13 12:16:52,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 689 events. 309/689 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3364 event pairs, 105 based on Foata normal form. 80/740 useless extension candidates. Maximal degree in co-relation 1415. Up to 316 conditions per place. [2022-12-13 12:16:52,486 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 26 selfloop transitions, 10 changer transitions 0/41 dead transitions. [2022-12-13 12:16:52,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 187 flow [2022-12-13 12:16:52,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2022-12-13 12:16:52,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4935672514619883 [2022-12-13 12:16:52,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2022-12-13 12:16:52,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2022-12-13 12:16:52,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:52,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2022-12-13 12:16:52,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:52,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:52,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:52,494 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 86 flow. Second operand 3 states and 422 transitions. [2022-12-13 12:16:52,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 187 flow [2022-12-13 12:16:52,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:16:52,496 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 104 flow [2022-12-13 12:16:52,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2022-12-13 12:16:52,497 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -5 predicate places. [2022-12-13 12:16:52,497 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 104 flow [2022-12-13 12:16:52,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:52,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:52,498 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:52,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 12:16:52,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:52,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:52,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash -130036028, now seen corresponding path program 2 times [2022-12-13 12:16:52,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:52,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107068347] [2022-12-13 12:16:52,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:16:52,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:52,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:52,700 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:52,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 12:16:52,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:16:52,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:16:52,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:16:52,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:52,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:16:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:16:52,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:52,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107068347] [2022-12-13 12:16:52,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107068347] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:16:52,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:16:52,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 12:16:52,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294384180] [2022-12-13 12:16:52,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:16:52,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:16:52,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:52,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:16:52,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:16:52,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 285 [2022-12-13 12:16:52,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:52,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:52,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 285 [2022-12-13 12:16:52,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:53,171 INFO L130 PetriNetUnfolder]: 381/897 cut-off events. [2022-12-13 12:16:53,171 INFO L131 PetriNetUnfolder]: For 271/279 co-relation queries the response was YES. [2022-12-13 12:16:53,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069 conditions, 897 events. 381/897 cut-off events. For 271/279 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4474 event pairs, 79 based on Foata normal form. 56/906 useless extension candidates. Maximal degree in co-relation 2063. Up to 194 conditions per place. [2022-12-13 12:16:53,176 INFO L137 encePairwiseOnDemand]: 281/285 looper letters, 61 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2022-12-13 12:16:53,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 73 transitions, 383 flow [2022-12-13 12:16:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:16:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:16:53,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 729 transitions. [2022-12-13 12:16:53,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.511578947368421 [2022-12-13 12:16:53,179 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 729 transitions. [2022-12-13 12:16:53,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 729 transitions. [2022-12-13 12:16:53,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:53,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 729 transitions. [2022-12-13 12:16:53,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:53,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:53,184 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:53,184 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 104 flow. Second operand 5 states and 729 transitions. [2022-12-13 12:16:53,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 73 transitions, 383 flow [2022-12-13 12:16:53,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:16:53,187 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 126 flow [2022-12-13 12:16:53,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2022-12-13 12:16:53,188 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2022-12-13 12:16:53,188 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 126 flow [2022-12-13 12:16:53,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:53,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:53,189 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:53,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 12:16:53,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:53,390 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:53,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash -431362554, now seen corresponding path program 3 times [2022-12-13 12:16:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:53,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593827225] [2022-12-13 12:16:53,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:16:53,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:53,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:53,392 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:53,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 12:16:53,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 12:16:53,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:16:53,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:16:53,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:16:53,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:16:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:16:53,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:53,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593827225] [2022-12-13 12:16:53,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593827225] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:16:53,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:16:53,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-12-13 12:16:53,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939659576] [2022-12-13 12:16:53,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:16:53,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:16:53,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:53,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:16:53,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:16:53,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 285 [2022-12-13 12:16:53,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 126 flow. Second operand has 11 states, 11 states have (on average 130.63636363636363) internal successors, (1437), 11 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:53,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:53,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 285 [2022-12-13 12:16:53,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:54,409 INFO L130 PetriNetUnfolder]: 828/1908 cut-off events. [2022-12-13 12:16:54,409 INFO L131 PetriNetUnfolder]: For 1077/1087 co-relation queries the response was YES. [2022-12-13 12:16:54,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4457 conditions, 1908 events. 828/1908 cut-off events. For 1077/1087 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 10582 event pairs, 33 based on Foata normal form. 37/1874 useless extension candidates. Maximal degree in co-relation 4448. Up to 358 conditions per place. [2022-12-13 12:16:54,422 INFO L137 encePairwiseOnDemand]: 278/285 looper letters, 130 selfloop transitions, 12 changer transitions 0/149 dead transitions. [2022-12-13 12:16:54,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 149 transitions, 970 flow [2022-12-13 12:16:54,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:16:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 12:16:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1644 transitions. [2022-12-13 12:16:54,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4807017543859649 [2022-12-13 12:16:54,426 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1644 transitions. [2022-12-13 12:16:54,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1644 transitions. [2022-12-13 12:16:54,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:54,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1644 transitions. [2022-12-13 12:16:54,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:54,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 285.0) internal successors, (3705), 13 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:54,434 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 285.0) internal successors, (3705), 13 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:54,434 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 126 flow. Second operand 12 states and 1644 transitions. [2022-12-13 12:16:54,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 149 transitions, 970 flow [2022-12-13 12:16:54,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 149 transitions, 920 flow, removed 16 selfloop flow, removed 1 redundant places. [2022-12-13 12:16:54,446 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 186 flow [2022-12-13 12:16:54,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=186, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2022-12-13 12:16:54,447 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2022-12-13 12:16:54,447 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 186 flow [2022-12-13 12:16:54,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.63636363636363) internal successors, (1437), 11 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:54,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:54,448 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:54,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 12:16:54,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:54,650 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1829082353, now seen corresponding path program 1 times [2022-12-13 12:16:54,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:54,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696448186] [2022-12-13 12:16:54,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:54,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:54,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:54,657 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:54,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 12:16:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:54,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:16:54,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 12:16:54,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:16:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 12:16:54,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:54,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696448186] [2022-12-13 12:16:54,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696448186] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:16:54,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:16:54,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-13 12:16:54,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97607304] [2022-12-13 12:16:54,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:16:54,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:16:54,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:54,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:16:54,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:16:54,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 285 [2022-12-13 12:16:54,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 186 flow. Second operand has 8 states, 8 states have (on average 133.25) internal successors, (1066), 8 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:54,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:54,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 285 [2022-12-13 12:16:54,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:55,382 INFO L130 PetriNetUnfolder]: 835/1777 cut-off events. [2022-12-13 12:16:55,382 INFO L131 PetriNetUnfolder]: For 1234/1234 co-relation queries the response was YES. [2022-12-13 12:16:55,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4651 conditions, 1777 events. 835/1777 cut-off events. For 1234/1234 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9068 event pairs, 231 based on Foata normal form. 118/1871 useless extension candidates. Maximal degree in co-relation 4640. Up to 697 conditions per place. [2022-12-13 12:16:55,394 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 76 selfloop transitions, 7 changer transitions 6/92 dead transitions. [2022-12-13 12:16:55,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 92 transitions, 558 flow [2022-12-13 12:16:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:16:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:16:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 838 transitions. [2022-12-13 12:16:55,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49005847953216375 [2022-12-13 12:16:55,398 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 838 transitions. [2022-12-13 12:16:55,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 838 transitions. [2022-12-13 12:16:55,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:55,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 838 transitions. [2022-12-13 12:16:55,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.66666666666666) internal successors, (838), 6 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:55,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:55,406 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:55,406 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 186 flow. Second operand 6 states and 838 transitions. [2022-12-13 12:16:55,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 92 transitions, 558 flow [2022-12-13 12:16:55,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 528 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-12-13 12:16:55,412 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 238 flow [2022-12-13 12:16:55,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2022-12-13 12:16:55,413 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2022-12-13 12:16:55,413 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 238 flow [2022-12-13 12:16:55,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 133.25) internal successors, (1066), 8 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:55,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:55,414 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:55,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-13 12:16:55,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:55,615 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:55,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:55,615 INFO L85 PathProgramCache]: Analyzing trace with hash -105823427, now seen corresponding path program 2 times [2022-12-13 12:16:55,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:55,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124307497] [2022-12-13 12:16:55,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:16:55,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:55,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:55,617 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:55,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 12:16:55,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 12:16:55,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:16:55,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 12:16:55,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 12:16:56,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:16:56,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:56,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124307497] [2022-12-13 12:16:56,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124307497] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:56,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:56,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:16:56,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830725772] [2022-12-13 12:16:56,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:56,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:56,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:56,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:56,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:56,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 285 [2022-12-13 12:16:56,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:56,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:56,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 285 [2022-12-13 12:16:56,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:56,452 INFO L130 PetriNetUnfolder]: 659/1533 cut-off events. [2022-12-13 12:16:56,452 INFO L131 PetriNetUnfolder]: For 1523/1557 co-relation queries the response was YES. [2022-12-13 12:16:56,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4467 conditions, 1533 events. 659/1533 cut-off events. For 1523/1557 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8248 event pairs, 423 based on Foata normal form. 6/1514 useless extension candidates. Maximal degree in co-relation 4452. Up to 1179 conditions per place. [2022-12-13 12:16:56,461 INFO L137 encePairwiseOnDemand]: 283/285 looper letters, 37 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2022-12-13 12:16:56,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 48 transitions, 312 flow [2022-12-13 12:16:56,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2022-12-13 12:16:56,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46900584795321637 [2022-12-13 12:16:56,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2022-12-13 12:16:56,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2022-12-13 12:16:56,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:56,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2022-12-13 12:16:56,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:56,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:56,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:56,466 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 238 flow. Second operand 3 states and 401 transitions. [2022-12-13 12:16:56,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 48 transitions, 312 flow [2022-12-13 12:16:56,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 48 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:16:56,469 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 238 flow [2022-12-13 12:16:56,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2022-12-13 12:16:56,470 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2022-12-13 12:16:56,470 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 238 flow [2022-12-13 12:16:56,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:56,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:56,471 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:56,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 12:16:56,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:56,672 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:56,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:56,673 INFO L85 PathProgramCache]: Analyzing trace with hash -406394654, now seen corresponding path program 4 times [2022-12-13 12:16:56,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:56,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534118966] [2022-12-13 12:16:56,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:16:56,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:56,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:56,677 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:56,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 12:16:56,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:16:56,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:16:56,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:16:56,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 12:16:56,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:16:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 12:16:56,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:16:56,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534118966] [2022-12-13 12:16:56,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534118966] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:16:56,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:16:56,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-12-13 12:16:56,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922482707] [2022-12-13 12:16:56,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:16:56,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:16:56,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:16:56,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:16:56,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:16:57,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 285 [2022-12-13 12:16:57,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 238 flow. Second operand has 10 states, 10 states have (on average 131.2) internal successors, (1312), 10 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:57,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:57,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 285 [2022-12-13 12:16:57,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:57,436 INFO L130 PetriNetUnfolder]: 547/1149 cut-off events. [2022-12-13 12:16:57,436 INFO L131 PetriNetUnfolder]: For 1078/1078 co-relation queries the response was YES. [2022-12-13 12:16:57,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3505 conditions, 1149 events. 547/1149 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4499 event pairs, 152 based on Foata normal form. 68/1217 useless extension candidates. Maximal degree in co-relation 3489. Up to 517 conditions per place. [2022-12-13 12:16:57,440 INFO L137 encePairwiseOnDemand]: 276/285 looper letters, 63 selfloop transitions, 9 changer transitions 3/77 dead transitions. [2022-12-13 12:16:57,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 498 flow [2022-12-13 12:16:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:16:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:16:57,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 810 transitions. [2022-12-13 12:16:57,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2022-12-13 12:16:57,442 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 810 transitions. [2022-12-13 12:16:57,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 810 transitions. [2022-12-13 12:16:57,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:57,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 810 transitions. [2022-12-13 12:16:57,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:57,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:57,444 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:57,444 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 238 flow. Second operand 6 states and 810 transitions. [2022-12-13 12:16:57,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 498 flow [2022-12-13 12:16:57,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 497 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:16:57,447 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 273 flow [2022-12-13 12:16:57,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2022-12-13 12:16:57,447 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2022-12-13 12:16:57,447 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 273 flow [2022-12-13 12:16:57,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 131.2) internal successors, (1312), 10 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:57,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:57,448 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:57,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-12-13 12:16:57,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:57,649 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:16:57,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:57,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1284946310, now seen corresponding path program 5 times [2022-12-13 12:16:57,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:16:57,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896152270] [2022-12-13 12:16:57,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:16:57,652 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:57,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:16:57,655 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:16:57,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 12:16:57,797 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 12:16:57,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-12-13 12:16:57,797 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:16:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:16:57,917 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 12:16:57,917 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:16:57,918 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-12-13 12:16:57,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-12-13 12:16:57,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-13 12:16:57,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-13 12:16:57,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-12-13 12:16:57,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-12-13 12:16:57,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-13 12:16:57,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-13 12:16:57,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-12-13 12:16:57,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-12-13 12:16:57,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-13 12:16:57,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-13 12:16:57,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-13 12:16:58,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:16:58,122 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:58,134 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 12:16:58,134 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 12:16:58,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:16:58 BasicIcfg [2022-12-13 12:16:58,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 12:16:58,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 12:16:58,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 12:16:58,217 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 12:16:58,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:16:24" (3/4) ... [2022-12-13 12:16:58,219 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 12:16:58,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 12:16:58,220 INFO L158 Benchmark]: Toolchain (without parser) took 35065.68ms. Allocated memory was 58.7MB in the beginning and 163.6MB in the end (delta: 104.9MB). Free memory was 35.0MB in the beginning and 94.5MB in the end (delta: -59.5MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2022-12-13 12:16:58,220 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 48.2MB. Free memory was 26.7MB in the beginning and 26.6MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:16:58,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 540.51ms. Allocated memory is still 58.7MB. Free memory was 34.9MB in the beginning and 32.0MB in the end (delta: 2.8MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2022-12-13 12:16:58,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.97ms. Allocated memory is still 58.7MB. Free memory was 32.0MB in the beginning and 29.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:16:58,220 INFO L158 Benchmark]: Boogie Preprocessor took 32.74ms. Allocated memory is still 58.7MB. Free memory was 29.5MB in the beginning and 27.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:16:58,221 INFO L158 Benchmark]: RCFGBuilder took 496.94ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 27.4MB in the beginning and 32.5MB in the end (delta: -5.1MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2022-12-13 12:16:58,221 INFO L158 Benchmark]: TraceAbstraction took 33939.70ms. Allocated memory was 71.3MB in the beginning and 163.6MB in the end (delta: 92.3MB). Free memory was 31.9MB in the beginning and 94.5MB in the end (delta: -62.6MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. [2022-12-13 12:16:58,221 INFO L158 Benchmark]: Witness Printer took 2.87ms. Allocated memory is still 163.6MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:16:58,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 48.2MB. Free memory was 26.7MB in the beginning and 26.6MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 540.51ms. Allocated memory is still 58.7MB. Free memory was 34.9MB in the beginning and 32.0MB in the end (delta: 2.8MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.97ms. Allocated memory is still 58.7MB. Free memory was 32.0MB in the beginning and 29.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.74ms. Allocated memory is still 58.7MB. Free memory was 29.5MB in the beginning and 27.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 496.94ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 27.4MB in the beginning and 32.5MB in the end (delta: -5.1MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * TraceAbstraction took 33939.70ms. Allocated memory was 71.3MB in the beginning and 163.6MB in the end (delta: 92.3MB). Free memory was 31.9MB in the beginning and 94.5MB in the end (delta: -62.6MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. * Witness Printer took 2.87ms. Allocated memory is still 163.6MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.8s, 138 PlacesBefore, 41 PlacesAfterwards, 141 TransitionsBefore, 39 TransitionsAfterwards, 2314 CoEnabledTransitionPairs, 7 FixpointIterations, 77 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 137 TotalNumberOfCompositions, 5529 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3121, independent: 2950, independent conditional: 0, independent unconditional: 2950, dependent: 171, dependent conditional: 0, dependent unconditional: 171, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1238, independent: 1206, independent conditional: 0, independent unconditional: 1206, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3121, independent: 1744, independent conditional: 0, independent unconditional: 1744, dependent: 139, dependent conditional: 0, dependent unconditional: 139, unknown: 1238, unknown conditional: 0, unknown unconditional: 1238] , Statistics on independence cache: Total cache size (in pairs): 174, Positive cache size: 160, Positive conditional cache size: 0, Positive unconditional cache size: 160, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 919]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 919. Possible FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-1, t1={9:0}, t2={7:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=0, t1={9:0}, t2={7:0}, total=0] [L878] COND TRUE 1 i < 3 [L915] 0 \read(t1) VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, t1={9:0}, t2={7:0}, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={9:0}, t2={7:0}, total=3] [L916] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={9:0}, t2={7:0}, total=3] [L897] 2 num-- VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=0, total=3] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={9:0}, t2={7:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={9:0}, t2={7:0}, total=6] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 906]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 184 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 33.7s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 23.9s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 954 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 694 mSDsluCounter, 119 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1619 IncrementalHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 83 mSDtfsCounter, 1619 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 376 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=13, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 289 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 366 ConstructedInterpolants, 37 QuantifiedInterpolants, 1805 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1695 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 170/192 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 12:16:58,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559ad4f9-52fc-48df-8f7c-045af45ff9a6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample