./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/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_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/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_e3610749-78ee-4b69-904a-e0c2e7965bf2/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 fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 --- 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 12:09:28,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:09:28,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:09:28,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:09:28,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:09:28,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:09:28,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:09:28,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:09:28,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:09:28,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:09:28,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:09:28,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:09:28,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:09:28,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:09:28,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:09:28,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:09:28,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:09:28,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:09:28,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:09:28,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:09:28,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:09:28,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:09:28,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:09:28,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:09:28,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:09:28,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:09:28,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:09:28,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:09:28,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:09:28,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:09:28,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:09:28,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:09:28,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:09:28,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:09:28,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:09:28,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:09:28,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:09:28,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:09:28,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:09:28,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:09:28,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:09:28,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 12:09:28,793 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:09:28,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:09:28,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:09:28,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:09:28,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:09:28,795 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:09:28,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:09:28,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:09:28,796 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:09:28,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:09:28,797 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:09:28,797 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:09:28,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:09:28,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:09:28,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:09:28,798 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:09:28,798 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:09:28,798 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:09:28,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:09:28,798 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:09:28,798 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:09:28,799 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:09:28,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:09:28,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:09:28,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:09:28,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:09:28,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:09:28,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:09:28,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:09:28,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:09:28,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:09:28,801 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:09:28,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:09:28,801 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:09:28,801 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_e3610749-78ee-4b69-904a-e0c2e7965bf2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 [2022-12-13 12:09:28,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:09:29,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:09:29,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:09:29,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:09:29,011 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:09:29,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2022-12-13 12:09:31,584 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:09:31,710 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:09:31,711 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2022-12-13 12:09:31,715 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/data/57f01f695/5cecdbd3756e487db572bc72f660a5f9/FLAGa1fcb263c [2022-12-13 12:09:31,724 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/data/57f01f695/5cecdbd3756e487db572bc72f660a5f9 [2022-12-13 12:09:31,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:09:31,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:09:31,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:09:31,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:09:31,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:09:31,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c97289f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31, skipping insertion in model container [2022-12-13 12:09:31,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:09:31,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:09:31,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:09:31,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:09:31,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:09:31,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:09:31,859 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_e3610749-78ee-4b69-904a-e0c2e7965bf2/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c[2087,2100] [2022-12-13 12:09:31,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:09:31,871 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:09:31,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:09:31,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:09:31,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:09:31,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:09:31,886 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_e3610749-78ee-4b69-904a-e0c2e7965bf2/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c[2087,2100] [2022-12-13 12:09:31,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:09:31,896 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:09:31,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31 WrapperNode [2022-12-13 12:09:31,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:09:31,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:09:31,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:09:31,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:09:31,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,922 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 76 [2022-12-13 12:09:31,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:09:31,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:09:31,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:09:31,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:09:31,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,936 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:09:31,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:09:31,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:09:31,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:09:31,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31" (1/1) ... [2022-12-13 12:09:31,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:09:31,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:31,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:09:31,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:09:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:09:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:09:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:09:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:09:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:09:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:09:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:09:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:09:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:09:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:09:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:09:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:09:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:09:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:09:31,993 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 12:09:32,067 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:09:32,069 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:09:32,239 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:09:32,274 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:09:32,274 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 12:09:32,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:09:32 BoogieIcfgContainer [2022-12-13 12:09:32,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:09:32,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:09:32,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:09:32,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:09:32,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:09:31" (1/3) ... [2022-12-13 12:09:32,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650e0b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:09:32, skipping insertion in model container [2022-12-13 12:09:32,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:09:31" (2/3) ... [2022-12-13 12:09:32,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650e0b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:09:32, skipping insertion in model container [2022-12-13 12:09:32,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:09:32" (3/3) ... [2022-12-13 12:09:32,287 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2022-12-13 12:09:32,305 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:09:32,305 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 12:09:32,305 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:09:32,355 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:09:32,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 101 transitions, 218 flow [2022-12-13 12:09:32,427 INFO L130 PetriNetUnfolder]: 6/99 cut-off events. [2022-12-13 12:09:32,427 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:09:32,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 6/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-12-13 12:09:32,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 101 transitions, 218 flow [2022-12-13 12:09:32,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 94 transitions, 200 flow [2022-12-13 12:09:32,437 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:09:32,445 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 94 transitions, 200 flow [2022-12-13 12:09:32,447 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 94 transitions, 200 flow [2022-12-13 12:09:32,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions, 200 flow [2022-12-13 12:09:32,465 INFO L130 PetriNetUnfolder]: 6/94 cut-off events. [2022-12-13 12:09:32,466 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:09:32,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 6/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-12-13 12:09:32,467 INFO L119 LiptonReduction]: Number of co-enabled transitions 660 [2022-12-13 12:09:34,759 INFO L134 LiptonReduction]: Checked pairs total: 751 [2022-12-13 12:09:34,759 INFO L136 LiptonReduction]: Total number of compositions: 96 [2022-12-13 12:09:34,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:09:34,776 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;@a41fb1d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:09:34,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 12:09:34,777 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 12:09:34,777 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:09:34,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:34,778 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 12:09:34,778 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 12:09:34,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:34,782 INFO L85 PathProgramCache]: Analyzing trace with hash 404, now seen corresponding path program 1 times [2022-12-13 12:09:34,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:34,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556988413] [2022-12-13 12:09:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:34,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:34,854 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 12:09:34,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:34,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556988413] [2022-12-13 12:09:34,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556988413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:34,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:34,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 12:09:34,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566757984] [2022-12-13 12:09:34,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:34,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:09:34,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:34,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:09:34,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:09:34,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 197 [2022-12-13 12:09:34,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 12:09:34,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:34,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 197 [2022-12-13 12:09:34,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:34,938 INFO L130 PetriNetUnfolder]: 106/169 cut-off events. [2022-12-13 12:09:34,938 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 12:09:34,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 169 events. 106/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 531 event pairs, 45 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 277. Up to 167 conditions per place. [2022-12-13 12:09:34,941 INFO L137 encePairwiseOnDemand]: 194/197 looper letters, 19 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2022-12-13 12:09:34,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 92 flow [2022-12-13 12:09:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:09:34,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 12:09:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 202 transitions. [2022-12-13 12:09:34,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5126903553299492 [2022-12-13 12:09:34,952 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 202 transitions. [2022-12-13 12:09:34,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 202 transitions. [2022-12-13 12:09:34,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:34,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 202 transitions. [2022-12-13 12:09:34,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 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 12:09:34,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 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 12:09:34,962 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 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 12:09:34,964 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 202 transitions. [2022-12-13 12:09:34,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 92 flow [2022-12-13 12:09:34,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:09:34,968 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2022-12-13 12:09:34,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2022-12-13 12:09:34,972 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2022-12-13 12:09:34,972 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2022-12-13 12:09:34,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 12:09:34,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:34,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:09:34,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:09:34,973 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 12:09:34,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:34,974 INFO L85 PathProgramCache]: Analyzing trace with hash 398079, now seen corresponding path program 1 times [2022-12-13 12:09:34,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:34,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984550433] [2022-12-13 12:09:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:34,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:35,087 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 12:09:35,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:35,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984550433] [2022-12-13 12:09:35,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984550433] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:35,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:35,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:09:35,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154363380] [2022-12-13 12:09:35,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:35,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:09:35,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:35,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:09:35,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:09:35,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 197 [2022-12-13 12:09:35,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 12:09:35,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:35,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 197 [2022-12-13 12:09:35,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:35,155 INFO L130 PetriNetUnfolder]: 99/156 cut-off events. [2022-12-13 12:09:35,155 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:09:35,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 156 events. 99/156 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 479 event pairs, 42 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2022-12-13 12:09:35,157 INFO L137 encePairwiseOnDemand]: 194/197 looper letters, 16 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2022-12-13 12:09:35,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 76 flow [2022-12-13 12:09:35,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:09:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:09:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2022-12-13 12:09:35,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4433164128595601 [2022-12-13 12:09:35,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2022-12-13 12:09:35,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2022-12-13 12:09:35,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:35,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2022-12-13 12:09:35,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 12:09:35,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 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 12:09:35,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 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 12:09:35,163 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 262 transitions. [2022-12-13 12:09:35,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 76 flow [2022-12-13 12:09:35,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:09:35,164 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2022-12-13 12:09:35,164 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2022-12-13 12:09:35,164 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2022-12-13 12:09:35,164 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2022-12-13 12:09:35,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 12:09:35,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:35,165 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:09:35,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:09:35,165 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 12:09:35,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:35,166 INFO L85 PathProgramCache]: Analyzing trace with hash 398078, now seen corresponding path program 1 times [2022-12-13 12:09:35,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:35,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939379660] [2022-12-13 12:09:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:35,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:35,245 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 12:09:35,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:35,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939379660] [2022-12-13 12:09:35,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939379660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:35,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:35,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:09:35,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763447622] [2022-12-13 12:09:35,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:35,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:09:35,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:35,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:09:35,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:09:35,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 197 [2022-12-13 12:09:35,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 12:09:35,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:35,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 197 [2022-12-13 12:09:35,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:35,310 INFO L130 PetriNetUnfolder]: 92/143 cut-off events. [2022-12-13 12:09:35,310 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:09:35,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 143 events. 92/143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 430 event pairs, 39 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 288. Up to 140 conditions per place. [2022-12-13 12:09:35,312 INFO L137 encePairwiseOnDemand]: 194/197 looper letters, 14 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2022-12-13 12:09:35,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 70 flow [2022-12-13 12:09:35,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:09:35,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:09:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2022-12-13 12:09:35,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4450084602368866 [2022-12-13 12:09:35,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2022-12-13 12:09:35,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2022-12-13 12:09:35,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:35,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2022-12-13 12:09:35,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 12:09:35,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 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 12:09:35,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 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 12:09:35,317 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 263 transitions. [2022-12-13 12:09:35,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 70 flow [2022-12-13 12:09:35,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 69 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:09:35,318 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2022-12-13 12:09:35,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2022-12-13 12:09:35,318 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-12-13 12:09:35,318 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2022-12-13 12:09:35,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 12:09:35,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:35,319 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:09:35,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:09:35,319 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 12:09:35,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:35,320 INFO L85 PathProgramCache]: Analyzing trace with hash 382560925, now seen corresponding path program 1 times [2022-12-13 12:09:35,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:35,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271892066] [2022-12-13 12:09:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:35,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:35,433 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 12:09:35,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:35,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271892066] [2022-12-13 12:09:35,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271892066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:35,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:35,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:09:35,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696666146] [2022-12-13 12:09:35,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:35,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:09:35,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:35,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:09:35,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:09:35,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 197 [2022-12-13 12:09:35,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 flow. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 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 12:09:35,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:35,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 197 [2022-12-13 12:09:35,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:35,525 INFO L130 PetriNetUnfolder]: 70/112 cut-off events. [2022-12-13 12:09:35,525 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:09:35,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 112 events. 70/112 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 310 event pairs, 29 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 227. Up to 109 conditions per place. [2022-12-13 12:09:35,525 INFO L137 encePairwiseOnDemand]: 195/197 looper letters, 13 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2022-12-13 12:09:35,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 67 flow [2022-12-13 12:09:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:09:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:09:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2022-12-13 12:09:35,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4467005076142132 [2022-12-13 12:09:35,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2022-12-13 12:09:35,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2022-12-13 12:09:35,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:35,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2022-12-13 12:09:35,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 12:09:35,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 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 12:09:35,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 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 12:09:35,529 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 264 transitions. [2022-12-13 12:09:35,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 67 flow [2022-12-13 12:09:35,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:09:35,530 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2022-12-13 12:09:35,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2022-12-13 12:09:35,530 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-12-13 12:09:35,531 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2022-12-13 12:09:35,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 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 12:09:35,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:35,531 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:09:35,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:09:35,531 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 12:09:35,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:35,532 INFO L85 PathProgramCache]: Analyzing trace with hash 382560924, now seen corresponding path program 1 times [2022-12-13 12:09:35,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:35,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052899204] [2022-12-13 12:09:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:35,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:35,583 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 12:09:35,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:35,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052899204] [2022-12-13 12:09:35,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052899204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:35,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:35,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:09:35,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041931693] [2022-12-13 12:09:35,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:35,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:09:35,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:35,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:09:35,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:09:35,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:35,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 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 12:09:35,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:35,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:35,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:35,641 INFO L130 PetriNetUnfolder]: 48/81 cut-off events. [2022-12-13 12:09:35,641 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:09:35,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 81 events. 48/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 183 event pairs, 19 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 166. Up to 78 conditions per place. [2022-12-13 12:09:35,641 INFO L137 encePairwiseOnDemand]: 195/197 looper letters, 12 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2022-12-13 12:09:35,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 64 flow [2022-12-13 12:09:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:09:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:09:35,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2022-12-13 12:09:35,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41455160744500846 [2022-12-13 12:09:35,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2022-12-13 12:09:35,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2022-12-13 12:09:35,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:35,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2022-12-13 12:09:35,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 12:09:35,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 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 12:09:35,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 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 12:09:35,644 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 245 transitions. [2022-12-13 12:09:35,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 64 flow [2022-12-13 12:09:35,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 63 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:09:35,645 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2022-12-13 12:09:35,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2022-12-13 12:09:35,646 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-12-13 12:09:35,646 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2022-12-13 12:09:35,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 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 12:09:35,646 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:35,646 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:35,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:09:35,646 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 12:09:35,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:35,647 INFO L85 PathProgramCache]: Analyzing trace with hash -536450799, now seen corresponding path program 1 times [2022-12-13 12:09:35,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:35,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656585572] [2022-12-13 12:09:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:35,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:35,883 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 12:09:35,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:35,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656585572] [2022-12-13 12:09:35,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656585572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:35,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:35,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:09:35,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998059310] [2022-12-13 12:09:35,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:35,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:09:35,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:35,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:09:35,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:09:35,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 197 [2022-12-13 12:09:35,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 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 12:09:35,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:35,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 197 [2022-12-13 12:09:35,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:36,033 INFO L130 PetriNetUnfolder]: 62/128 cut-off events. [2022-12-13 12:09:36,034 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:09:36,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 128 events. 62/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 407 event pairs, 2 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 266. Up to 61 conditions per place. [2022-12-13 12:09:36,035 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 29 selfloop transitions, 4 changer transitions 11/44 dead transitions. [2022-12-13 12:09:36,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 44 transitions, 193 flow [2022-12-13 12:09:36,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:09:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:09:36,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2022-12-13 12:09:36,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4416243654822335 [2022-12-13 12:09:36,037 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2022-12-13 12:09:36,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2022-12-13 12:09:36,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:36,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2022-12-13 12:09:36,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 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 12:09:36,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 12:09:36,042 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 12:09:36,042 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 7 states and 609 transitions. [2022-12-13 12:09:36,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 44 transitions, 193 flow [2022-12-13 12:09:36,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 44 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:09:36,044 INFO L231 Difference]: Finished difference. Result has 32 places, 17 transitions, 74 flow [2022-12-13 12:09:36,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=17} [2022-12-13 12:09:36,045 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2022-12-13 12:09:36,045 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 17 transitions, 74 flow [2022-12-13 12:09:36,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 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 12:09:36,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:36,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:36,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:09:36,046 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 12:09:36,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:36,046 INFO L85 PathProgramCache]: Analyzing trace with hash -642839027, now seen corresponding path program 2 times [2022-12-13 12:09:36,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:36,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492896233] [2022-12-13 12:09:36,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:36,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:36,274 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 12:09:36,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:36,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492896233] [2022-12-13 12:09:36,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492896233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:36,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:36,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:09:36,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705063157] [2022-12-13 12:09:36,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:36,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:09:36,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:36,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:09:36,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:09:36,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 197 [2022-12-13 12:09:36,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 17 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 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 12:09:36,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:36,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 197 [2022-12-13 12:09:36,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:36,488 INFO L130 PetriNetUnfolder]: 58/122 cut-off events. [2022-12-13 12:09:36,488 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2022-12-13 12:09:36,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 122 events. 58/122 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 352 event pairs, 14 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 377. Up to 63 conditions per place. [2022-12-13 12:09:36,489 INFO L137 encePairwiseOnDemand]: 190/197 looper letters, 29 selfloop transitions, 8 changer transitions 8/45 dead transitions. [2022-12-13 12:09:36,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 262 flow [2022-12-13 12:09:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:09:36,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:09:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2022-12-13 12:09:36,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43944887599709936 [2022-12-13 12:09:36,492 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2022-12-13 12:09:36,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2022-12-13 12:09:36,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:36,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2022-12-13 12:09:36,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 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 12:09:36,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 12:09:36,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 12:09:36,496 INFO L175 Difference]: Start difference. First operand has 32 places, 17 transitions, 74 flow. Second operand 7 states and 606 transitions. [2022-12-13 12:09:36,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 262 flow [2022-12-13 12:09:36,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 235 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-13 12:09:36,499 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 116 flow [2022-12-13 12:09:36,499 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2022-12-13 12:09:36,499 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2022-12-13 12:09:36,500 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 116 flow [2022-12-13 12:09:36,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 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 12:09:36,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:36,500 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:36,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:09:36,500 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 12:09:36,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:36,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1494271207, now seen corresponding path program 3 times [2022-12-13 12:09:36,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:36,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001517499] [2022-12-13 12:09:36,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:36,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:36,737 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 12:09:36,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:36,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001517499] [2022-12-13 12:09:36,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001517499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:36,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:36,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:09:36,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58946452] [2022-12-13 12:09:36,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:36,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:09:36,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:36,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:09:36,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:09:36,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 197 [2022-12-13 12:09:36,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 80.85714285714286) internal successors, (566), 7 states have internal predecessors, (566), 0 states have call successors, (0), 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 12:09:36,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:36,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 197 [2022-12-13 12:09:36,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:36,915 INFO L130 PetriNetUnfolder]: 66/144 cut-off events. [2022-12-13 12:09:36,915 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-12-13 12:09:36,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 144 events. 66/144 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 474 event pairs, 14 based on Foata normal form. 1/137 useless extension candidates. Maximal degree in co-relation 484. Up to 67 conditions per place. [2022-12-13 12:09:36,916 INFO L137 encePairwiseOnDemand]: 190/197 looper letters, 34 selfloop transitions, 11 changer transitions 5/50 dead transitions. [2022-12-13 12:09:36,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 312 flow [2022-12-13 12:09:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:09:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:09:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2022-12-13 12:09:36,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43437273386511965 [2022-12-13 12:09:36,919 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2022-12-13 12:09:36,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2022-12-13 12:09:36,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:36,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2022-12-13 12:09:36,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 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 12:09:36,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 12:09:36,924 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 12:09:36,924 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 116 flow. Second operand 7 states and 599 transitions. [2022-12-13 12:09:36,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 312 flow [2022-12-13 12:09:36,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 299 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 12:09:36,927 INFO L231 Difference]: Finished difference. Result has 44 places, 27 transitions, 175 flow [2022-12-13 12:09:36,927 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=175, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2022-12-13 12:09:36,928 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-12-13 12:09:36,928 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 175 flow [2022-12-13 12:09:36,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.85714285714286) internal successors, (566), 7 states have internal predecessors, (566), 0 states have call successors, (0), 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 12:09:36,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:36,929 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:36,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:09:36,929 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 12:09:36,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:36,930 INFO L85 PathProgramCache]: Analyzing trace with hash 254444761, now seen corresponding path program 4 times [2022-12-13 12:09:36,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:36,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256604449] [2022-12-13 12:09:36,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:36,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:37,141 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 12:09:37,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:37,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256604449] [2022-12-13 12:09:37,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256604449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:37,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:37,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:09:37,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408149737] [2022-12-13 12:09:37,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:37,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:09:37,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:37,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:09:37,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:09:37,206 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 197 [2022-12-13 12:09:37,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 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 12:09:37,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:37,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 197 [2022-12-13 12:09:37,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:37,329 INFO L130 PetriNetUnfolder]: 62/140 cut-off events. [2022-12-13 12:09:37,329 INFO L131 PetriNetUnfolder]: For 286/286 co-relation queries the response was YES. [2022-12-13 12:09:37,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 140 events. 62/140 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 451 event pairs, 14 based on Foata normal form. 1/133 useless extension candidates. Maximal degree in co-relation 523. Up to 67 conditions per place. [2022-12-13 12:09:37,330 INFO L137 encePairwiseOnDemand]: 190/197 looper letters, 31 selfloop transitions, 12 changer transitions 8/51 dead transitions. [2022-12-13 12:09:37,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 365 flow [2022-12-13 12:09:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:09:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:09:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 607 transitions. [2022-12-13 12:09:37,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44017403915881076 [2022-12-13 12:09:37,333 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 607 transitions. [2022-12-13 12:09:37,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 607 transitions. [2022-12-13 12:09:37,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:37,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 607 transitions. [2022-12-13 12:09:37,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 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 12:09:37,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 12:09:37,336 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 12:09:37,336 INFO L175 Difference]: Start difference. First operand has 44 places, 27 transitions, 175 flow. Second operand 7 states and 607 transitions. [2022-12-13 12:09:37,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 365 flow [2022-12-13 12:09:37,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 346 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 12:09:37,338 INFO L231 Difference]: Finished difference. Result has 49 places, 28 transitions, 207 flow [2022-12-13 12:09:37,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=207, PETRI_PLACES=49, PETRI_TRANSITIONS=28} [2022-12-13 12:09:37,339 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2022-12-13 12:09:37,339 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 28 transitions, 207 flow [2022-12-13 12:09:37,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 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 12:09:37,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:37,340 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:37,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:09:37,340 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 12:09:37,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1526445487, now seen corresponding path program 5 times [2022-12-13 12:09:37,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:37,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325136933] [2022-12-13 12:09:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:37,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:37,524 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 12:09:37,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:37,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325136933] [2022-12-13 12:09:37,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325136933] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:37,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:37,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:09:37,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879238947] [2022-12-13 12:09:37,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:37,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:09:37,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:37,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:09:37,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:09:37,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 197 [2022-12-13 12:09:37,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 28 transitions, 207 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 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 12:09:37,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:37,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 197 [2022-12-13 12:09:37,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:37,734 INFO L130 PetriNetUnfolder]: 56/122 cut-off events. [2022-12-13 12:09:37,734 INFO L131 PetriNetUnfolder]: For 280/280 co-relation queries the response was YES. [2022-12-13 12:09:37,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 122 events. 56/122 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 364 event pairs, 10 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 483. Up to 67 conditions per place. [2022-12-13 12:09:37,736 INFO L137 encePairwiseOnDemand]: 190/197 looper letters, 29 selfloop transitions, 12 changer transitions 8/49 dead transitions. [2022-12-13 12:09:37,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 380 flow [2022-12-13 12:09:37,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:09:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:09:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2022-12-13 12:09:37,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43872371283538797 [2022-12-13 12:09:37,738 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2022-12-13 12:09:37,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2022-12-13 12:09:37,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:37,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2022-12-13 12:09:37,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 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 12:09:37,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 12:09:37,742 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 12:09:37,743 INFO L175 Difference]: Start difference. First operand has 49 places, 28 transitions, 207 flow. Second operand 7 states and 605 transitions. [2022-12-13 12:09:37,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 380 flow [2022-12-13 12:09:37,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 352 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-13 12:09:37,745 INFO L231 Difference]: Finished difference. Result has 52 places, 28 transitions, 214 flow [2022-12-13 12:09:37,746 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=52, PETRI_TRANSITIONS=28} [2022-12-13 12:09:37,746 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2022-12-13 12:09:37,746 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 28 transitions, 214 flow [2022-12-13 12:09:37,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 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 12:09:37,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:37,747 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:37,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:09:37,747 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 12:09:37,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash 226739131, now seen corresponding path program 6 times [2022-12-13 12:09:37,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:37,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925867642] [2022-12-13 12:09:37,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:37,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:37,945 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 12:09:37,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:37,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925867642] [2022-12-13 12:09:37,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925867642] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:37,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:37,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:09:37,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411246408] [2022-12-13 12:09:37,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:37,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:09:37,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:37,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:09:37,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:09:38,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 197 [2022-12-13 12:09:38,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 28 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 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 12:09:38,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:38,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 197 [2022-12-13 12:09:38,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:38,113 INFO L130 PetriNetUnfolder]: 54/110 cut-off events. [2022-12-13 12:09:38,114 INFO L131 PetriNetUnfolder]: For 285/285 co-relation queries the response was YES. [2022-12-13 12:09:38,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 110 events. 54/110 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 286 event pairs, 11 based on Foata normal form. 1/103 useless extension candidates. Maximal degree in co-relation 444. Up to 67 conditions per place. [2022-12-13 12:09:38,115 INFO L137 encePairwiseOnDemand]: 190/197 looper letters, 22 selfloop transitions, 12 changer transitions 8/42 dead transitions. [2022-12-13 12:09:38,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 349 flow [2022-12-13 12:09:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:09:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:09:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2022-12-13 12:09:38,117 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43364757070340826 [2022-12-13 12:09:38,117 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2022-12-13 12:09:38,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2022-12-13 12:09:38,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:38,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2022-12-13 12:09:38,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 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 12:09:38,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 12:09:38,119 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 12:09:38,119 INFO L175 Difference]: Start difference. First operand has 52 places, 28 transitions, 214 flow. Second operand 7 states and 598 transitions. [2022-12-13 12:09:38,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 349 flow [2022-12-13 12:09:38,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 317 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-12-13 12:09:38,121 INFO L231 Difference]: Finished difference. Result has 52 places, 28 transitions, 216 flow [2022-12-13 12:09:38,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=52, PETRI_TRANSITIONS=28} [2022-12-13 12:09:38,122 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2022-12-13 12:09:38,122 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 28 transitions, 216 flow [2022-12-13 12:09:38,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 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 12:09:38,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:38,122 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:38,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:09:38,122 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 12:09:38,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:38,123 INFO L85 PathProgramCache]: Analyzing trace with hash 966387869, now seen corresponding path program 1 times [2022-12-13 12:09:38,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:38,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594713983] [2022-12-13 12:09:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:38,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:38,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594713983] [2022-12-13 12:09:38,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594713983] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096906050] [2022-12-13 12:09:38,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:38,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:38,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:38,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:38,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:09:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:38,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:38,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:38,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:38,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096906050] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:38,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:38,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 12:09:38,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422235174] [2022-12-13 12:09:38,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:38,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:38,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:38,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:38,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:38,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 28 transitions, 216 flow. Second operand has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:38,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:38,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:38,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:39,570 INFO L130 PetriNetUnfolder]: 144/300 cut-off events. [2022-12-13 12:09:39,570 INFO L131 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2022-12-13 12:09:39,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 300 events. 144/300 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1255 event pairs, 4 based on Foata normal form. 13/285 useless extension candidates. Maximal degree in co-relation 991. Up to 105 conditions per place. [2022-12-13 12:09:39,572 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 70 selfloop transitions, 27 changer transitions 25/122 dead transitions. [2022-12-13 12:09:39,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 776 flow [2022-12-13 12:09:39,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 12:09:39,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 12:09:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1582 transitions. [2022-12-13 12:09:39,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42265562383115146 [2022-12-13 12:09:39,575 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1582 transitions. [2022-12-13 12:09:39,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1582 transitions. [2022-12-13 12:09:39,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:39,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1582 transitions. [2022-12-13 12:09:39,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 83.26315789473684) internal successors, (1582), 19 states have internal predecessors, (1582), 0 states have call successors, (0), 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 12:09:39,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 197.0) internal successors, (3940), 20 states have internal predecessors, (3940), 0 states have call successors, (0), 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 12:09:39,581 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 197.0) internal successors, (3940), 20 states have internal predecessors, (3940), 0 states have call successors, (0), 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 12:09:39,582 INFO L175 Difference]: Start difference. First operand has 52 places, 28 transitions, 216 flow. Second operand 19 states and 1582 transitions. [2022-12-13 12:09:39,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 776 flow [2022-12-13 12:09:39,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 122 transitions, 707 flow, removed 18 selfloop flow, removed 9 redundant places. [2022-12-13 12:09:39,584 INFO L231 Difference]: Finished difference. Result has 66 places, 44 transitions, 334 flow [2022-12-13 12:09:39,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=334, PETRI_PLACES=66, PETRI_TRANSITIONS=44} [2022-12-13 12:09:39,585 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2022-12-13 12:09:39,585 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 44 transitions, 334 flow [2022-12-13 12:09:39,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:39,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:39,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:39,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:09:39,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 12:09:39,786 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 12:09:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1016402377, now seen corresponding path program 2 times [2022-12-13 12:09:39,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:39,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461380069] [2022-12-13 12:09:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:39,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:39,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:39,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461380069] [2022-12-13 12:09:39,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461380069] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:39,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900695462] [2022-12-13 12:09:39,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:09:39,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:39,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:39,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:39,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:09:40,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:09:40,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:40,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:40,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:40,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:40,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900695462] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:40,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:40,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 12:09:40,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120154553] [2022-12-13 12:09:40,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:40,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:40,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:40,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:40,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:40,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:40,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 44 transitions, 334 flow. Second operand has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:40,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:40,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:40,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:40,947 INFO L130 PetriNetUnfolder]: 185/384 cut-off events. [2022-12-13 12:09:40,947 INFO L131 PetriNetUnfolder]: For 963/963 co-relation queries the response was YES. [2022-12-13 12:09:40,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 384 events. 185/384 cut-off events. For 963/963 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1720 event pairs, 10 based on Foata normal form. 2/366 useless extension candidates. Maximal degree in co-relation 1561. Up to 151 conditions per place. [2022-12-13 12:09:40,949 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 84 selfloop transitions, 46 changer transitions 10/140 dead transitions. [2022-12-13 12:09:40,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 140 transitions, 1058 flow [2022-12-13 12:09:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 12:09:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 12:09:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1744 transitions. [2022-12-13 12:09:40,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4215615180082185 [2022-12-13 12:09:40,953 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1744 transitions. [2022-12-13 12:09:40,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1744 transitions. [2022-12-13 12:09:40,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:40,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1744 transitions. [2022-12-13 12:09:40,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 83.04761904761905) internal successors, (1744), 21 states have internal predecessors, (1744), 0 states have call successors, (0), 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 12:09:40,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 197.0) internal successors, (4334), 22 states have internal predecessors, (4334), 0 states have call successors, (0), 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 12:09:40,959 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 197.0) internal successors, (4334), 22 states have internal predecessors, (4334), 0 states have call successors, (0), 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 12:09:40,959 INFO L175 Difference]: Start difference. First operand has 66 places, 44 transitions, 334 flow. Second operand 21 states and 1744 transitions. [2022-12-13 12:09:40,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 140 transitions, 1058 flow [2022-12-13 12:09:40,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 140 transitions, 854 flow, removed 91 selfloop flow, removed 8 redundant places. [2022-12-13 12:09:40,964 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 499 flow [2022-12-13 12:09:40,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=499, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2022-12-13 12:09:40,964 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2022-12-13 12:09:40,964 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 499 flow [2022-12-13 12:09:40,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:40,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:40,965 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:40,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:09:41,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 12:09:41,166 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 12:09:41,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:41,166 INFO L85 PathProgramCache]: Analyzing trace with hash 984228097, now seen corresponding path program 3 times [2022-12-13 12:09:41,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:41,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116865615] [2022-12-13 12:09:41,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:41,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:41,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:41,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116865615] [2022-12-13 12:09:41,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116865615] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:41,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782180749] [2022-12-13 12:09:41,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:09:41,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:41,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:41,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:41,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:09:41,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 12:09:41,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:41,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:41,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:41,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:41,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782180749] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:41,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:41,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 12:09:41,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744312824] [2022-12-13 12:09:41,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:41,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:41,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:41,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:41,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:41,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:41,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 499 flow. Second operand has 19 states, 19 states have (on average 79.10526315789474) internal successors, (1503), 19 states have internal predecessors, (1503), 0 states have call successors, (0), 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 12:09:41,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:41,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:41,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:42,399 INFO L130 PetriNetUnfolder]: 183/370 cut-off events. [2022-12-13 12:09:42,399 INFO L131 PetriNetUnfolder]: For 1067/1067 co-relation queries the response was YES. [2022-12-13 12:09:42,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1592 conditions, 370 events. 183/370 cut-off events. For 1067/1067 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1590 event pairs, 12 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 1569. Up to 106 conditions per place. [2022-12-13 12:09:42,403 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 79 selfloop transitions, 41 changer transitions 10/130 dead transitions. [2022-12-13 12:09:42,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 130 transitions, 1001 flow [2022-12-13 12:09:42,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 12:09:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 12:09:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1501 transitions. [2022-12-13 12:09:42,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42329385222786237 [2022-12-13 12:09:42,405 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1501 transitions. [2022-12-13 12:09:42,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1501 transitions. [2022-12-13 12:09:42,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:42,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1501 transitions. [2022-12-13 12:09:42,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 83.38888888888889) internal successors, (1501), 18 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:42,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 197.0) internal successors, (3743), 19 states have internal predecessors, (3743), 0 states have call successors, (0), 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 12:09:42,411 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 197.0) internal successors, (3743), 19 states have internal predecessors, (3743), 0 states have call successors, (0), 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 12:09:42,411 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 499 flow. Second operand 18 states and 1501 transitions. [2022-12-13 12:09:42,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 130 transitions, 1001 flow [2022-12-13 12:09:42,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 130 transitions, 952 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-12-13 12:09:42,416 INFO L231 Difference]: Finished difference. Result has 94 places, 64 transitions, 541 flow [2022-12-13 12:09:42,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=541, PETRI_PLACES=94, PETRI_TRANSITIONS=64} [2022-12-13 12:09:42,416 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2022-12-13 12:09:42,416 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 64 transitions, 541 flow [2022-12-13 12:09:42,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.10526315789474) internal successors, (1503), 19 states have internal predecessors, (1503), 0 states have call successors, (0), 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 12:09:42,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:42,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:42,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:09:42,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:42,617 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 12:09:42,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:42,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1375920475, now seen corresponding path program 4 times [2022-12-13 12:09:42,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:42,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173675137] [2022-12-13 12:09:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:42,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:42,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:42,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173675137] [2022-12-13 12:09:42,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173675137] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:42,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761497697] [2022-12-13 12:09:42,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:09:42,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:42,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:42,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:42,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:09:42,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:09:42,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:42,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:42,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:42,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:43,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761497697] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:43,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:43,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 12:09:43,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617626889] [2022-12-13 12:09:43,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:43,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:43,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:43,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:43,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:43,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:43,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 64 transitions, 541 flow. Second operand has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:43,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:43,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:43,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:44,138 INFO L130 PetriNetUnfolder]: 236/509 cut-off events. [2022-12-13 12:09:44,138 INFO L131 PetriNetUnfolder]: For 1749/1749 co-relation queries the response was YES. [2022-12-13 12:09:44,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 509 events. 236/509 cut-off events. For 1749/1749 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2613 event pairs, 6 based on Foata normal form. 4/501 useless extension candidates. Maximal degree in co-relation 2283. Up to 195 conditions per place. [2022-12-13 12:09:44,141 INFO L137 encePairwiseOnDemand]: 188/197 looper letters, 75 selfloop transitions, 49 changer transitions 24/148 dead transitions. [2022-12-13 12:09:44,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 148 transitions, 1270 flow [2022-12-13 12:09:44,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 12:09:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 12:09:44,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1572 transitions. [2022-12-13 12:09:44,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41998397007747795 [2022-12-13 12:09:44,144 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1572 transitions. [2022-12-13 12:09:44,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1572 transitions. [2022-12-13 12:09:44,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:44,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1572 transitions. [2022-12-13 12:09:44,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 82.73684210526316) internal successors, (1572), 19 states have internal predecessors, (1572), 0 states have call successors, (0), 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 12:09:44,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 197.0) internal successors, (3940), 20 states have internal predecessors, (3940), 0 states have call successors, (0), 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 12:09:44,155 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 197.0) internal successors, (3940), 20 states have internal predecessors, (3940), 0 states have call successors, (0), 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 12:09:44,155 INFO L175 Difference]: Start difference. First operand has 94 places, 64 transitions, 541 flow. Second operand 19 states and 1572 transitions. [2022-12-13 12:09:44,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 148 transitions, 1270 flow [2022-12-13 12:09:44,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 148 transitions, 1132 flow, removed 14 selfloop flow, removed 12 redundant places. [2022-12-13 12:09:44,161 INFO L231 Difference]: Finished difference. Result has 109 places, 82 transitions, 766 flow [2022-12-13 12:09:44,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=766, PETRI_PLACES=109, PETRI_TRANSITIONS=82} [2022-12-13 12:09:44,161 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2022-12-13 12:09:44,161 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 82 transitions, 766 flow [2022-12-13 12:09:44,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:44,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:44,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:44,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:09:44,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:44,364 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:44,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1348214845, now seen corresponding path program 5 times [2022-12-13 12:09:44,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:44,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187196673] [2022-12-13 12:09:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:44,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:44,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187196673] [2022-12-13 12:09:44,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187196673] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:44,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951009267] [2022-12-13 12:09:44,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:09:44,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:44,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:44,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:44,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:09:44,583 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:09:44,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:44,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:44,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:44,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:44,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951009267] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:44,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:44,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 12:09:44,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166025792] [2022-12-13 12:09:44,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:44,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:44,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:44,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:44,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:45,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:45,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 82 transitions, 766 flow. Second operand has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:45,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:45,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:45,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:45,882 INFO L130 PetriNetUnfolder]: 226/490 cut-off events. [2022-12-13 12:09:45,882 INFO L131 PetriNetUnfolder]: For 2896/2896 co-relation queries the response was YES. [2022-12-13 12:09:45,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2522 conditions, 490 events. 226/490 cut-off events. For 2896/2896 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2476 event pairs, 6 based on Foata normal form. 3/489 useless extension candidates. Maximal degree in co-relation 2486. Up to 199 conditions per place. [2022-12-13 12:09:45,885 INFO L137 encePairwiseOnDemand]: 188/197 looper letters, 69 selfloop transitions, 56 changer transitions 19/144 dead transitions. [2022-12-13 12:09:45,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 144 transitions, 1363 flow [2022-12-13 12:09:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 12:09:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 12:09:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1644 transitions. [2022-12-13 12:09:45,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41725888324873095 [2022-12-13 12:09:45,887 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1644 transitions. [2022-12-13 12:09:45,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1644 transitions. [2022-12-13 12:09:45,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:45,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1644 transitions. [2022-12-13 12:09:45,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 82.2) internal successors, (1644), 20 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 12:09:45,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 197.0) internal successors, (4137), 21 states have internal predecessors, (4137), 0 states have call successors, (0), 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 12:09:45,892 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 197.0) internal successors, (4137), 21 states have internal predecessors, (4137), 0 states have call successors, (0), 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 12:09:45,893 INFO L175 Difference]: Start difference. First operand has 109 places, 82 transitions, 766 flow. Second operand 20 states and 1644 transitions. [2022-12-13 12:09:45,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 144 transitions, 1363 flow [2022-12-13 12:09:45,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 144 transitions, 1303 flow, removed 20 selfloop flow, removed 9 redundant places. [2022-12-13 12:09:45,901 INFO L231 Difference]: Finished difference. Result has 120 places, 89 transitions, 947 flow [2022-12-13 12:09:45,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=947, PETRI_PLACES=120, PETRI_TRANSITIONS=89} [2022-12-13 12:09:45,902 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 91 predicate places. [2022-12-13 12:09:45,902 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 89 transitions, 947 flow [2022-12-13 12:09:45,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:45,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:45,903 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:45,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 12:09:46,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:46,104 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:46,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:46,105 INFO L85 PathProgramCache]: Analyzing trace with hash 490529607, now seen corresponding path program 6 times [2022-12-13 12:09:46,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:46,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993328436] [2022-12-13 12:09:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:46,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:46,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993328436] [2022-12-13 12:09:46,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993328436] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:46,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124563475] [2022-12-13 12:09:46,276 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:09:46,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:46,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:46,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:46,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:09:46,331 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 12:09:46,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:46,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:46,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:46,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:46,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124563475] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:46,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:46,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 12:09:46,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93049820] [2022-12-13 12:09:46,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:46,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:46,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:46,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:46,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:46,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:46,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 89 transitions, 947 flow. Second operand has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:46,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:46,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:46,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:46,998 INFO L130 PetriNetUnfolder]: 223/468 cut-off events. [2022-12-13 12:09:46,999 INFO L131 PetriNetUnfolder]: For 3787/3787 co-relation queries the response was YES. [2022-12-13 12:09:47,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2690 conditions, 468 events. 223/468 cut-off events. For 3787/3787 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2292 event pairs, 6 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2653. Up to 219 conditions per place. [2022-12-13 12:09:47,002 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 67 selfloop transitions, 46 changer transitions 11/124 dead transitions. [2022-12-13 12:09:47,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 124 transitions, 1375 flow [2022-12-13 12:09:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 12:09:47,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 12:09:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1072 transitions. [2022-12-13 12:09:47,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4185864896524795 [2022-12-13 12:09:47,003 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1072 transitions. [2022-12-13 12:09:47,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1072 transitions. [2022-12-13 12:09:47,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:47,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1072 transitions. [2022-12-13 12:09:47,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 82.46153846153847) internal successors, (1072), 13 states have internal predecessors, (1072), 0 states have call successors, (0), 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 12:09:47,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 197.0) internal successors, (2758), 14 states have internal predecessors, (2758), 0 states have call successors, (0), 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 12:09:47,006 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 197.0) internal successors, (2758), 14 states have internal predecessors, (2758), 0 states have call successors, (0), 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 12:09:47,006 INFO L175 Difference]: Start difference. First operand has 120 places, 89 transitions, 947 flow. Second operand 13 states and 1072 transitions. [2022-12-13 12:09:47,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 124 transitions, 1375 flow [2022-12-13 12:09:47,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 124 transitions, 1221 flow, removed 25 selfloop flow, removed 13 redundant places. [2022-12-13 12:09:47,017 INFO L231 Difference]: Finished difference. Result has 114 places, 90 transitions, 914 flow [2022-12-13 12:09:47,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=914, PETRI_PLACES=114, PETRI_TRANSITIONS=90} [2022-12-13 12:09:47,017 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2022-12-13 12:09:47,017 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 90 transitions, 914 flow [2022-12-13 12:09:47,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:47,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:47,017 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:47,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:09:47,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 12:09:47,219 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:47,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:47,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1893980607, now seen corresponding path program 7 times [2022-12-13 12:09:47,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:47,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517900290] [2022-12-13 12:09:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:47,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:47,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:47,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517900290] [2022-12-13 12:09:47,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517900290] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:47,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469560307] [2022-12-13 12:09:47,363 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:09:47,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:47,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:47,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:47,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:09:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:47,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:47,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:47,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:47,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469560307] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:47,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:47,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 12:09:47,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959088051] [2022-12-13 12:09:47,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:47,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:47,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:47,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:47,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:47,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:47,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 90 transitions, 914 flow. Second operand has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:47,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:47,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:47,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:48,019 INFO L130 PetriNetUnfolder]: 224/469 cut-off events. [2022-12-13 12:09:48,019 INFO L131 PetriNetUnfolder]: For 3221/3221 co-relation queries the response was YES. [2022-12-13 12:09:48,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2599 conditions, 469 events. 224/469 cut-off events. For 3221/3221 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2255 event pairs, 9 based on Foata normal form. 2/467 useless extension candidates. Maximal degree in co-relation 2563. Up to 260 conditions per place. [2022-12-13 12:09:48,022 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 74 selfloop transitions, 34 changer transitions 10/118 dead transitions. [2022-12-13 12:09:48,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 118 transitions, 1284 flow [2022-12-13 12:09:48,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:09:48,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:09:48,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 902 transitions. [2022-12-13 12:09:48,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41624365482233505 [2022-12-13 12:09:48,023 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 902 transitions. [2022-12-13 12:09:48,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 902 transitions. [2022-12-13 12:09:48,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:48,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 902 transitions. [2022-12-13 12:09:48,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 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 12:09:48,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 197.0) internal successors, (2364), 12 states have internal predecessors, (2364), 0 states have call successors, (0), 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 12:09:48,026 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 197.0) internal successors, (2364), 12 states have internal predecessors, (2364), 0 states have call successors, (0), 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 12:09:48,026 INFO L175 Difference]: Start difference. First operand has 114 places, 90 transitions, 914 flow. Second operand 11 states and 902 transitions. [2022-12-13 12:09:48,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 118 transitions, 1284 flow [2022-12-13 12:09:48,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 118 transitions, 1191 flow, removed 10 selfloop flow, removed 12 redundant places. [2022-12-13 12:09:48,034 INFO L231 Difference]: Finished difference. Result has 113 places, 92 transitions, 924 flow [2022-12-13 12:09:48,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=924, PETRI_PLACES=113, PETRI_TRANSITIONS=92} [2022-12-13 12:09:48,034 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2022-12-13 12:09:48,035 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 92 transitions, 924 flow [2022-12-13 12:09:48,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:48,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:48,035 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:48,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 12:09:48,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 12:09:48,236 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:48,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:48,236 INFO L85 PathProgramCache]: Analyzing trace with hash 205305233, now seen corresponding path program 8 times [2022-12-13 12:09:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:48,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676903594] [2022-12-13 12:09:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:48,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:48,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:48,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:48,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676903594] [2022-12-13 12:09:48,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676903594] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:48,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123899073] [2022-12-13 12:09:48,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:09:48,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:48,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:48,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:48,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 12:09:48,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:09:48,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:48,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:48,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:48,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:48,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123899073] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:48,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:48,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 12:09:48,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067814138] [2022-12-13 12:09:48,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:48,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:48,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:48,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:48,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:48,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:48,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 92 transitions, 924 flow. Second operand has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:48,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:48,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:48,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:49,618 INFO L130 PetriNetUnfolder]: 231/517 cut-off events. [2022-12-13 12:09:49,619 INFO L131 PetriNetUnfolder]: For 3217/3217 co-relation queries the response was YES. [2022-12-13 12:09:49,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 517 events. 231/517 cut-off events. For 3217/3217 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2735 event pairs, 5 based on Foata normal form. 3/516 useless extension candidates. Maximal degree in co-relation 2762. Up to 271 conditions per place. [2022-12-13 12:09:49,622 INFO L137 encePairwiseOnDemand]: 188/197 looper letters, 104 selfloop transitions, 50 changer transitions 16/170 dead transitions. [2022-12-13 12:09:49,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 170 transitions, 1686 flow [2022-12-13 12:09:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 12:09:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 12:09:49,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1806 transitions. [2022-12-13 12:09:49,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4167051222888786 [2022-12-13 12:09:49,624 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1806 transitions. [2022-12-13 12:09:49,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1806 transitions. [2022-12-13 12:09:49,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:49,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1806 transitions. [2022-12-13 12:09:49,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 82.0909090909091) internal successors, (1806), 22 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 12:09:49,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 197.0) internal successors, (4531), 23 states have internal predecessors, (4531), 0 states have call successors, (0), 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 12:09:49,628 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 197.0) internal successors, (4531), 23 states have internal predecessors, (4531), 0 states have call successors, (0), 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 12:09:49,628 INFO L175 Difference]: Start difference. First operand has 113 places, 92 transitions, 924 flow. Second operand 22 states and 1806 transitions. [2022-12-13 12:09:49,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 170 transitions, 1686 flow [2022-12-13 12:09:49,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 170 transitions, 1632 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-12-13 12:09:49,638 INFO L231 Difference]: Finished difference. Result has 130 places, 107 transitions, 1255 flow [2022-12-13 12:09:49,638 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1255, PETRI_PLACES=130, PETRI_TRANSITIONS=107} [2022-12-13 12:09:49,638 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2022-12-13 12:09:49,638 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 1255 flow [2022-12-13 12:09:49,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:49,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:49,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:49,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 12:09:49,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:49,840 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:49,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:49,841 INFO L85 PathProgramCache]: Analyzing trace with hash -652380005, now seen corresponding path program 9 times [2022-12-13 12:09:49,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:49,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468215408] [2022-12-13 12:09:49,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:49,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:49,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:49,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468215408] [2022-12-13 12:09:49,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468215408] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:49,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341001957] [2022-12-13 12:09:49,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:09:49,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:49,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:49,988 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:49,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 12:09:50,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 12:09:50,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:50,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:50,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:50,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:50,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:50,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341001957] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:50,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:50,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 12:09:50,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276325009] [2022-12-13 12:09:50,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:50,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:50,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:50,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:50,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:50,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:50,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 107 transitions, 1255 flow. Second operand has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:50,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:50,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:50,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:50,675 INFO L130 PetriNetUnfolder]: 227/488 cut-off events. [2022-12-13 12:09:50,675 INFO L131 PetriNetUnfolder]: For 3802/3802 co-relation queries the response was YES. [2022-12-13 12:09:50,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 488 events. 227/488 cut-off events. For 3802/3802 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2437 event pairs, 17 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 2879. Up to 261 conditions per place. [2022-12-13 12:09:50,679 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 85 selfloop transitions, 41 changer transitions 10/136 dead transitions. [2022-12-13 12:09:50,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 136 transitions, 1686 flow [2022-12-13 12:09:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:09:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 12:09:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 985 transitions. [2022-12-13 12:09:50,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2022-12-13 12:09:50,680 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 985 transitions. [2022-12-13 12:09:50,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 985 transitions. [2022-12-13 12:09:50,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:50,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 985 transitions. [2022-12-13 12:09:50,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 82.08333333333333) internal successors, (985), 12 states have internal predecessors, (985), 0 states have call successors, (0), 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 12:09:50,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 197.0) internal successors, (2561), 13 states have internal predecessors, (2561), 0 states have call successors, (0), 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 12:09:50,683 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 197.0) internal successors, (2561), 13 states have internal predecessors, (2561), 0 states have call successors, (0), 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 12:09:50,683 INFO L175 Difference]: Start difference. First operand has 130 places, 107 transitions, 1255 flow. Second operand 12 states and 985 transitions. [2022-12-13 12:09:50,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 136 transitions, 1686 flow [2022-12-13 12:09:50,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 136 transitions, 1468 flow, removed 80 selfloop flow, removed 10 redundant places. [2022-12-13 12:09:50,698 INFO L231 Difference]: Finished difference. Result has 130 places, 110 transitions, 1192 flow [2022-12-13 12:09:50,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1192, PETRI_PLACES=130, PETRI_TRANSITIONS=110} [2022-12-13 12:09:50,698 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2022-12-13 12:09:50,698 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 110 transitions, 1192 flow [2022-12-13 12:09:50,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:50,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:50,699 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:50,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 12:09:50,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:50,900 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash 233010863, now seen corresponding path program 10 times [2022-12-13 12:09:50,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:50,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088153920] [2022-12-13 12:09:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:50,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:51,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:51,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088153920] [2022-12-13 12:09:51,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088153920] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:51,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289199411] [2022-12-13 12:09:51,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:09:51,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:51,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:51,040 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:51,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 12:09:51,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:09:51,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:51,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:51,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:51,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:51,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289199411] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:51,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:51,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 12:09:51,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138720514] [2022-12-13 12:09:51,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:51,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:51,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:51,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:51,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:51,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 110 transitions, 1192 flow. Second operand has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:51,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:51,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:51,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:51,944 INFO L130 PetriNetUnfolder]: 225/474 cut-off events. [2022-12-13 12:09:51,944 INFO L131 PetriNetUnfolder]: For 2192/2192 co-relation queries the response was YES. [2022-12-13 12:09:51,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2600 conditions, 474 events. 225/474 cut-off events. For 2192/2192 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2320 event pairs, 11 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 2561. Up to 269 conditions per place. [2022-12-13 12:09:51,947 INFO L137 encePairwiseOnDemand]: 188/197 looper letters, 88 selfloop transitions, 46 changer transitions 10/144 dead transitions. [2022-12-13 12:09:51,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 144 transitions, 1561 flow [2022-12-13 12:09:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 12:09:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 12:09:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1080 transitions. [2022-12-13 12:09:51,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4217102694260055 [2022-12-13 12:09:51,948 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1080 transitions. [2022-12-13 12:09:51,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1080 transitions. [2022-12-13 12:09:51,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:51,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1080 transitions. [2022-12-13 12:09:51,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.07692307692308) internal successors, (1080), 13 states have internal predecessors, (1080), 0 states have call successors, (0), 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 12:09:51,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 197.0) internal successors, (2758), 14 states have internal predecessors, (2758), 0 states have call successors, (0), 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 12:09:51,951 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 197.0) internal successors, (2758), 14 states have internal predecessors, (2758), 0 states have call successors, (0), 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 12:09:51,951 INFO L175 Difference]: Start difference. First operand has 130 places, 110 transitions, 1192 flow. Second operand 13 states and 1080 transitions. [2022-12-13 12:09:51,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 144 transitions, 1561 flow [2022-12-13 12:09:51,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 144 transitions, 1470 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-12-13 12:09:51,961 INFO L231 Difference]: Finished difference. Result has 128 places, 106 transitions, 1164 flow [2022-12-13 12:09:51,961 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1164, PETRI_PLACES=128, PETRI_TRANSITIONS=106} [2022-12-13 12:09:51,961 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2022-12-13 12:09:51,962 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 106 transitions, 1164 flow [2022-12-13 12:09:51,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 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 12:09:51,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:51,962 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:51,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 12:09:52,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 12:09:52,163 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:52,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:52,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1098294298, now seen corresponding path program 1 times [2022-12-13 12:09:52,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:52,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773803533] [2022-12-13 12:09:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:52,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:52,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:52,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773803533] [2022-12-13 12:09:52,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773803533] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:52,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349606876] [2022-12-13 12:09:52,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:52,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:52,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:52,314 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:52,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 12:09:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:52,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:52,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:52,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:52,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:52,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349606876] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:52,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:52,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 12:09:52,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6543690] [2022-12-13 12:09:52,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:52,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:52,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:52,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:52,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:52,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:52,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 106 transitions, 1164 flow. Second operand has 19 states, 19 states have (on average 78.73684210526316) internal successors, (1496), 19 states have internal predecessors, (1496), 0 states have call successors, (0), 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 12:09:52,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:52,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:52,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:53,338 INFO L130 PetriNetUnfolder]: 293/618 cut-off events. [2022-12-13 12:09:53,338 INFO L131 PetriNetUnfolder]: For 3404/3404 co-relation queries the response was YES. [2022-12-13 12:09:53,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3370 conditions, 618 events. 293/618 cut-off events. For 3404/3404 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3228 event pairs, 16 based on Foata normal form. 2/616 useless extension candidates. Maximal degree in co-relation 3330. Up to 137 conditions per place. [2022-12-13 12:09:53,346 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 118 selfloop transitions, 68 changer transitions 11/197 dead transitions. [2022-12-13 12:09:53,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 197 transitions, 2094 flow [2022-12-13 12:09:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 12:09:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 12:09:53,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1581 transitions. [2022-12-13 12:09:53,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42238845845578415 [2022-12-13 12:09:53,348 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1581 transitions. [2022-12-13 12:09:53,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1581 transitions. [2022-12-13 12:09:53,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:53,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1581 transitions. [2022-12-13 12:09:53,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 83.21052631578948) internal successors, (1581), 19 states have internal predecessors, (1581), 0 states have call successors, (0), 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 12:09:53,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 197.0) internal successors, (3940), 20 states have internal predecessors, (3940), 0 states have call successors, (0), 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 12:09:53,356 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 197.0) internal successors, (3940), 20 states have internal predecessors, (3940), 0 states have call successors, (0), 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 12:09:53,356 INFO L175 Difference]: Start difference. First operand has 128 places, 106 transitions, 1164 flow. Second operand 19 states and 1581 transitions. [2022-12-13 12:09:53,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 197 transitions, 2094 flow [2022-12-13 12:09:53,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 197 transitions, 1929 flow, removed 15 selfloop flow, removed 13 redundant places. [2022-12-13 12:09:53,372 INFO L231 Difference]: Finished difference. Result has 138 places, 130 transitions, 1463 flow [2022-12-13 12:09:53,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1463, PETRI_PLACES=138, PETRI_TRANSITIONS=130} [2022-12-13 12:09:53,373 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2022-12-13 12:09:53,373 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 130 transitions, 1463 flow [2022-12-13 12:09:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 78.73684210526316) internal successors, (1496), 19 states have internal predecessors, (1496), 0 states have call successors, (0), 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 12:09:53,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:53,373 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:53,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 12:09:53,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:53,574 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:53,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash 983911284, now seen corresponding path program 2 times [2022-12-13 12:09:53,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:53,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992982390] [2022-12-13 12:09:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:53,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:53,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:53,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992982390] [2022-12-13 12:09:53,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992982390] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:53,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25998842] [2022-12-13 12:09:53,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:09:53,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:53,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:53,724 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:53,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 12:09:53,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:09:53,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:53,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:53,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:53,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:53,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25998842] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:53,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:53,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 12:09:53,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601252851] [2022-12-13 12:09:53,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:53,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:53,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:53,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:53,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:54,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:54,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 130 transitions, 1463 flow. Second operand has 19 states, 19 states have (on average 78.6842105263158) internal successors, (1495), 19 states have internal predecessors, (1495), 0 states have call successors, (0), 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 12:09:54,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:54,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:54,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:54,512 INFO L130 PetriNetUnfolder]: 295/618 cut-off events. [2022-12-13 12:09:54,512 INFO L131 PetriNetUnfolder]: For 4503/4503 co-relation queries the response was YES. [2022-12-13 12:09:54,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3672 conditions, 618 events. 295/618 cut-off events. For 4503/4503 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3217 event pairs, 18 based on Foata normal form. 2/620 useless extension candidates. Maximal degree in co-relation 3627. Up to 141 conditions per place. [2022-12-13 12:09:54,515 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 118 selfloop transitions, 62 changer transitions 14/194 dead transitions. [2022-12-13 12:09:54,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 194 transitions, 2186 flow [2022-12-13 12:09:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:09:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 12:09:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1267 transitions. [2022-12-13 12:09:54,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4287648054145516 [2022-12-13 12:09:54,517 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1267 transitions. [2022-12-13 12:09:54,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1267 transitions. [2022-12-13 12:09:54,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:54,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1267 transitions. [2022-12-13 12:09:54,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 84.46666666666667) internal successors, (1267), 15 states have internal predecessors, (1267), 0 states have call successors, (0), 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 12:09:54,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 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 12:09:54,520 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 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 12:09:54,520 INFO L175 Difference]: Start difference. First operand has 138 places, 130 transitions, 1463 flow. Second operand 15 states and 1267 transitions. [2022-12-13 12:09:54,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 194 transitions, 2186 flow [2022-12-13 12:09:54,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 194 transitions, 1994 flow, removed 61 selfloop flow, removed 9 redundant places. [2022-12-13 12:09:54,537 INFO L231 Difference]: Finished difference. Result has 144 places, 129 transitions, 1439 flow [2022-12-13 12:09:54,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1439, PETRI_PLACES=144, PETRI_TRANSITIONS=129} [2022-12-13 12:09:54,538 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 115 predicate places. [2022-12-13 12:09:54,538 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 129 transitions, 1439 flow [2022-12-13 12:09:54,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 78.6842105263158) internal successors, (1495), 19 states have internal predecessors, (1495), 0 states have call successors, (0), 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 12:09:54,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:54,538 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:54,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 12:09:54,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:54,739 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:54,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:54,740 INFO L85 PathProgramCache]: Analyzing trace with hash 446776032, now seen corresponding path program 3 times [2022-12-13 12:09:54,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:54,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547120355] [2022-12-13 12:09:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:54,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:54,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:54,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547120355] [2022-12-13 12:09:54,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547120355] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:54,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651741870] [2022-12-13 12:09:54,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:09:54,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:54,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:54,866 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:54,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 12:09:54,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 12:09:54,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:54,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:54,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:55,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:55,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651741870] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:55,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:55,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 12:09:55,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558302994] [2022-12-13 12:09:55,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:55,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:09:55,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:55,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:09:55,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:09:55,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:55,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 129 transitions, 1439 flow. Second operand has 19 states, 19 states have (on average 78.6842105263158) internal successors, (1495), 19 states have internal predecessors, (1495), 0 states have call successors, (0), 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 12:09:55,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:55,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:55,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:55,726 INFO L130 PetriNetUnfolder]: 306/640 cut-off events. [2022-12-13 12:09:55,726 INFO L131 PetriNetUnfolder]: For 3912/3912 co-relation queries the response was YES. [2022-12-13 12:09:55,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3594 conditions, 640 events. 306/640 cut-off events. For 3912/3912 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3346 event pairs, 16 based on Foata normal form. 5/645 useless extension candidates. Maximal degree in co-relation 3549. Up to 135 conditions per place. [2022-12-13 12:09:55,729 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 106 selfloop transitions, 53 changer transitions 37/196 dead transitions. [2022-12-13 12:09:55,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 196 transitions, 2150 flow [2022-12-13 12:09:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 12:09:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 12:09:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1420 transitions. [2022-12-13 12:09:55,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.424007166318304 [2022-12-13 12:09:55,732 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1420 transitions. [2022-12-13 12:09:55,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1420 transitions. [2022-12-13 12:09:55,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:55,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1420 transitions. [2022-12-13 12:09:55,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.52941176470588) internal successors, (1420), 17 states have internal predecessors, (1420), 0 states have call successors, (0), 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 12:09:55,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 197.0) internal successors, (3546), 18 states have internal predecessors, (3546), 0 states have call successors, (0), 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 12:09:55,735 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 197.0) internal successors, (3546), 18 states have internal predecessors, (3546), 0 states have call successors, (0), 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 12:09:55,735 INFO L175 Difference]: Start difference. First operand has 144 places, 129 transitions, 1439 flow. Second operand 17 states and 1420 transitions. [2022-12-13 12:09:55,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 196 transitions, 2150 flow [2022-12-13 12:09:55,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 196 transitions, 2026 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-12-13 12:09:55,752 INFO L231 Difference]: Finished difference. Result has 150 places, 118 transitions, 1281 flow [2022-12-13 12:09:55,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1281, PETRI_PLACES=150, PETRI_TRANSITIONS=118} [2022-12-13 12:09:55,752 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2022-12-13 12:09:55,752 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 118 transitions, 1281 flow [2022-12-13 12:09:55,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 78.6842105263158) internal successors, (1495), 19 states have internal predecessors, (1495), 0 states have call successors, (0), 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 12:09:55,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:55,753 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:55,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 12:09:55,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 12:09:55,954 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:55,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:55,955 INFO L85 PathProgramCache]: Analyzing trace with hash 846323106, now seen corresponding path program 4 times [2022-12-13 12:09:55,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:55,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196758059] [2022-12-13 12:09:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:55,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:56,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:56,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196758059] [2022-12-13 12:09:56,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196758059] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:56,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758679970] [2022-12-13 12:09:56,068 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:09:56,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:56,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:56,068 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:56,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 12:09:56,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:09:56,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:56,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:56,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:56,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:56,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758679970] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:56,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:56,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 12:09:56,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791823504] [2022-12-13 12:09:56,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:56,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 12:09:56,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:56,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 12:09:56,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-12-13 12:09:56,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:56,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 118 transitions, 1281 flow. Second operand has 18 states, 18 states have (on average 78.77777777777777) internal successors, (1418), 18 states have internal predecessors, (1418), 0 states have call successors, (0), 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 12:09:56,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:56,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:56,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:56,842 INFO L130 PetriNetUnfolder]: 298/616 cut-off events. [2022-12-13 12:09:56,842 INFO L131 PetriNetUnfolder]: For 4709/4709 co-relation queries the response was YES. [2022-12-13 12:09:56,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3576 conditions, 616 events. 298/616 cut-off events. For 4709/4709 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3121 event pairs, 31 based on Foata normal form. 3/619 useless extension candidates. Maximal degree in co-relation 3529. Up to 402 conditions per place. [2022-12-13 12:09:56,846 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 125 selfloop transitions, 23 changer transitions 27/175 dead transitions. [2022-12-13 12:09:56,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 175 transitions, 1975 flow [2022-12-13 12:09:56,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 12:09:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 12:09:56,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1398 transitions. [2022-12-13 12:09:56,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41743804120633027 [2022-12-13 12:09:56,848 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1398 transitions. [2022-12-13 12:09:56,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1398 transitions. [2022-12-13 12:09:56,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:56,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1398 transitions. [2022-12-13 12:09:56,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 82.23529411764706) internal successors, (1398), 17 states have internal predecessors, (1398), 0 states have call successors, (0), 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 12:09:56,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 197.0) internal successors, (3546), 18 states have internal predecessors, (3546), 0 states have call successors, (0), 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 12:09:56,851 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 197.0) internal successors, (3546), 18 states have internal predecessors, (3546), 0 states have call successors, (0), 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 12:09:56,851 INFO L175 Difference]: Start difference. First operand has 150 places, 118 transitions, 1281 flow. Second operand 17 states and 1398 transitions. [2022-12-13 12:09:56,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 175 transitions, 1975 flow [2022-12-13 12:09:56,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 175 transitions, 1813 flow, removed 24 selfloop flow, removed 15 redundant places. [2022-12-13 12:09:56,869 INFO L231 Difference]: Finished difference. Result has 149 places, 117 transitions, 1220 flow [2022-12-13 12:09:56,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1220, PETRI_PLACES=149, PETRI_TRANSITIONS=117} [2022-12-13 12:09:56,869 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2022-12-13 12:09:56,869 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 117 transitions, 1220 flow [2022-12-13 12:09:56,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 78.77777777777777) internal successors, (1418), 18 states have internal predecessors, (1418), 0 states have call successors, (0), 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 12:09:56,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:56,870 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:56,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 12:09:57,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 12:09:57,071 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:57,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1669583506, now seen corresponding path program 5 times [2022-12-13 12:09:57,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:57,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802391919] [2022-12-13 12:09:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:57,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:57,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:57,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802391919] [2022-12-13 12:09:57,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802391919] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:57,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750829468] [2022-12-13 12:09:57,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:09:57,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:57,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:57,199 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:57,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 12:09:57,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:09:57,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:57,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:09:57,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:57,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:57,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750829468] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:57,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:57,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 12:09:57,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525258653] [2022-12-13 12:09:57,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:57,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 12:09:57,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:57,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 12:09:57,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-12-13 12:09:57,583 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:57,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 117 transitions, 1220 flow. Second operand has 18 states, 18 states have (on average 78.61111111111111) internal successors, (1415), 18 states have internal predecessors, (1415), 0 states have call successors, (0), 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 12:09:57,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:57,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:57,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:57,911 INFO L130 PetriNetUnfolder]: 265/552 cut-off events. [2022-12-13 12:09:57,911 INFO L131 PetriNetUnfolder]: For 4393/4393 co-relation queries the response was YES. [2022-12-13 12:09:57,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3044 conditions, 552 events. 265/552 cut-off events. For 4393/4393 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2696 event pairs, 29 based on Foata normal form. 2/554 useless extension candidates. Maximal degree in co-relation 2994. Up to 402 conditions per place. [2022-12-13 12:09:57,914 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 118 selfloop transitions, 21 changer transitions 14/153 dead transitions. [2022-12-13 12:09:57,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 153 transitions, 1696 flow [2022-12-13 12:09:57,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 12:09:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 12:09:57,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1070 transitions. [2022-12-13 12:09:57,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41780554470909803 [2022-12-13 12:09:57,916 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1070 transitions. [2022-12-13 12:09:57,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1070 transitions. [2022-12-13 12:09:57,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:57,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1070 transitions. [2022-12-13 12:09:57,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 82.3076923076923) internal successors, (1070), 13 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:57,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 197.0) internal successors, (2758), 14 states have internal predecessors, (2758), 0 states have call successors, (0), 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 12:09:57,919 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 197.0) internal successors, (2758), 14 states have internal predecessors, (2758), 0 states have call successors, (0), 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 12:09:57,919 INFO L175 Difference]: Start difference. First operand has 149 places, 117 transitions, 1220 flow. Second operand 13 states and 1070 transitions. [2022-12-13 12:09:57,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 153 transitions, 1696 flow [2022-12-13 12:09:57,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 153 transitions, 1615 flow, removed 20 selfloop flow, removed 10 redundant places. [2022-12-13 12:09:57,937 INFO L231 Difference]: Finished difference. Result has 147 places, 115 transitions, 1182 flow [2022-12-13 12:09:57,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1182, PETRI_PLACES=147, PETRI_TRANSITIONS=115} [2022-12-13 12:09:57,938 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2022-12-13 12:09:57,938 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 115 transitions, 1182 flow [2022-12-13 12:09:57,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 78.61111111111111) internal successors, (1415), 18 states have internal predecessors, (1415), 0 states have call successors, (0), 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 12:09:57,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:57,938 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:57,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 12:09:58,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 12:09:58,139 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:58,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:58,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1096096097, now seen corresponding path program 11 times [2022-12-13 12:09:58,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:58,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439854919] [2022-12-13 12:09:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:58,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:09:58,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:58,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439854919] [2022-12-13 12:09:58,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439854919] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:58,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967149745] [2022-12-13 12:09:58,280 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:09:58,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:58,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:58,281 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:58,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 12:09:58,333 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 12:09:58,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:09:58,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:09:58,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:58,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:09:58,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967149745] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:58,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:58,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-12-13 12:09:58,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009734927] [2022-12-13 12:09:58,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:58,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:09:58,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:58,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:09:58,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:09:58,799 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:09:58,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 115 transitions, 1182 flow. Second operand has 24 states, 24 states have (on average 78.875) internal successors, (1893), 24 states have internal predecessors, (1893), 0 states have call successors, (0), 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 12:09:58,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:58,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:09:58,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:59,750 INFO L130 PetriNetUnfolder]: 437/907 cut-off events. [2022-12-13 12:09:59,750 INFO L131 PetriNetUnfolder]: For 8956/8956 co-relation queries the response was YES. [2022-12-13 12:09:59,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5083 conditions, 907 events. 437/907 cut-off events. For 8956/8956 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5048 event pairs, 8 based on Foata normal form. 4/911 useless extension candidates. Maximal degree in co-relation 5033. Up to 225 conditions per place. [2022-12-13 12:09:59,755 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 139 selfloop transitions, 110 changer transitions 20/269 dead transitions. [2022-12-13 12:09:59,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 269 transitions, 2841 flow [2022-12-13 12:09:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 12:09:59,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-13 12:09:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2333 transitions. [2022-12-13 12:09:59,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42295141406816533 [2022-12-13 12:09:59,759 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2333 transitions. [2022-12-13 12:09:59,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2333 transitions. [2022-12-13 12:09:59,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:59,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2333 transitions. [2022-12-13 12:09:59,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 83.32142857142857) internal successors, (2333), 28 states have internal predecessors, (2333), 0 states have call successors, (0), 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 12:09:59,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 197.0) internal successors, (5713), 29 states have internal predecessors, (5713), 0 states have call successors, (0), 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 12:09:59,764 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 197.0) internal successors, (5713), 29 states have internal predecessors, (5713), 0 states have call successors, (0), 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 12:09:59,764 INFO L175 Difference]: Start difference. First operand has 147 places, 115 transitions, 1182 flow. Second operand 28 states and 2333 transitions. [2022-12-13 12:09:59,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 269 transitions, 2841 flow [2022-12-13 12:09:59,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 269 transitions, 2759 flow, removed 18 selfloop flow, removed 10 redundant places. [2022-12-13 12:09:59,795 INFO L231 Difference]: Finished difference. Result has 167 places, 155 transitions, 1959 flow [2022-12-13 12:09:59,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1959, PETRI_PLACES=167, PETRI_TRANSITIONS=155} [2022-12-13 12:09:59,796 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2022-12-13 12:09:59,796 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 155 transitions, 1959 flow [2022-12-13 12:09:59,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 78.875) internal successors, (1893), 24 states have internal predecessors, (1893), 0 states have call successors, (0), 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 12:09:59,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:59,796 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:59,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-13 12:09:59,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 12:09:59,997 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:09:59,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash -322807479, now seen corresponding path program 12 times [2022-12-13 12:09:59,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:59,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963801200] [2022-12-13 12:09:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:59,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:00,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:00,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963801200] [2022-12-13 12:10:00,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963801200] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:00,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769517002] [2022-12-13 12:10:00,137 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:10:00,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:00,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:00,138 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:00,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 12:10:00,188 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 12:10:00,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:00,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:00,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:00,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:00,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769517002] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:00,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:00,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-12-13 12:10:00,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294527543] [2022-12-13 12:10:00,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:00,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:10:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:00,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:10:00,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:10:00,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:00,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 155 transitions, 1959 flow. Second operand has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:00,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:00,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:00,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:01,779 INFO L130 PetriNetUnfolder]: 473/1007 cut-off events. [2022-12-13 12:10:01,780 INFO L131 PetriNetUnfolder]: For 12949/12949 co-relation queries the response was YES. [2022-12-13 12:10:01,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6166 conditions, 1007 events. 473/1007 cut-off events. For 12949/12949 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5922 event pairs, 10 based on Foata normal form. 3/1010 useless extension candidates. Maximal degree in co-relation 6106. Up to 253 conditions per place. [2022-12-13 12:10:01,786 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 165 selfloop transitions, 127 changer transitions 16/308 dead transitions. [2022-12-13 12:10:01,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 308 transitions, 3659 flow [2022-12-13 12:10:01,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 12:10:01,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-13 12:10:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2822 transitions. [2022-12-13 12:10:01,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4213197969543147 [2022-12-13 12:10:01,788 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2822 transitions. [2022-12-13 12:10:01,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2822 transitions. [2022-12-13 12:10:01,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:01,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2822 transitions. [2022-12-13 12:10:01,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 83.0) internal successors, (2822), 34 states have internal predecessors, (2822), 0 states have call successors, (0), 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 12:10:01,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 197.0) internal successors, (6895), 35 states have internal predecessors, (6895), 0 states have call successors, (0), 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 12:10:01,794 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 197.0) internal successors, (6895), 35 states have internal predecessors, (6895), 0 states have call successors, (0), 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 12:10:01,794 INFO L175 Difference]: Start difference. First operand has 167 places, 155 transitions, 1959 flow. Second operand 34 states and 2822 transitions. [2022-12-13 12:10:01,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 308 transitions, 3659 flow [2022-12-13 12:10:01,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 308 transitions, 3351 flow, removed 114 selfloop flow, removed 10 redundant places. [2022-12-13 12:10:01,834 INFO L231 Difference]: Finished difference. Result has 197 places, 179 transitions, 2351 flow [2022-12-13 12:10:01,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2351, PETRI_PLACES=197, PETRI_TRANSITIONS=179} [2022-12-13 12:10:01,834 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2022-12-13 12:10:01,834 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 179 transitions, 2351 flow [2022-12-13 12:10:01,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:01,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:01,835 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:01,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 12:10:02,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 12:10:02,036 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:02,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:02,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1417599326, now seen corresponding path program 6 times [2022-12-13 12:10:02,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:02,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281553416] [2022-12-13 12:10:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:02,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:02,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:02,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281553416] [2022-12-13 12:10:02,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281553416] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:02,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053094988] [2022-12-13 12:10:02,186 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:10:02,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:02,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:02,187 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:02,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 12:10:02,241 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 12:10:02,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:02,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 12:10:02,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:02,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:02,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:02,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053094988] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:02,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:02,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2022-12-13 12:10:02,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724914729] [2022-12-13 12:10:02,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:02,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:10:02,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:02,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:10:02,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:10:02,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:02,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 179 transitions, 2351 flow. Second operand has 19 states, 19 states have (on average 78.73684210526316) internal successors, (1496), 19 states have internal predecessors, (1496), 0 states have call successors, (0), 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 12:10:02,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:02,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:02,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:03,027 INFO L130 PetriNetUnfolder]: 470/993 cut-off events. [2022-12-13 12:10:03,027 INFO L131 PetriNetUnfolder]: For 16434/16434 co-relation queries the response was YES. [2022-12-13 12:10:03,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6486 conditions, 993 events. 470/993 cut-off events. For 16434/16434 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5763 event pairs, 22 based on Foata normal form. 10/1003 useless extension candidates. Maximal degree in co-relation 6418. Up to 291 conditions per place. [2022-12-13 12:10:03,033 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 106 selfloop transitions, 75 changer transitions 54/235 dead transitions. [2022-12-13 12:10:03,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 235 transitions, 3041 flow [2022-12-13 12:10:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 12:10:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 12:10:03,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1411 transitions. [2022-12-13 12:10:03,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4213197969543147 [2022-12-13 12:10:03,035 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1411 transitions. [2022-12-13 12:10:03,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1411 transitions. [2022-12-13 12:10:03,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:03,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1411 transitions. [2022-12-13 12:10:03,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 0 states have call successors, (0), 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 12:10:03,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 197.0) internal successors, (3546), 18 states have internal predecessors, (3546), 0 states have call successors, (0), 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 12:10:03,038 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 197.0) internal successors, (3546), 18 states have internal predecessors, (3546), 0 states have call successors, (0), 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 12:10:03,038 INFO L175 Difference]: Start difference. First operand has 197 places, 179 transitions, 2351 flow. Second operand 17 states and 1411 transitions. [2022-12-13 12:10:03,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 235 transitions, 3041 flow [2022-12-13 12:10:03,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 235 transitions, 2723 flow, removed 81 selfloop flow, removed 16 redundant places. [2022-12-13 12:10:03,102 INFO L231 Difference]: Finished difference. Result has 195 places, 158 transitions, 1909 flow [2022-12-13 12:10:03,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1909, PETRI_PLACES=195, PETRI_TRANSITIONS=158} [2022-12-13 12:10:03,102 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2022-12-13 12:10:03,102 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 158 transitions, 1909 flow [2022-12-13 12:10:03,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 78.73684210526316) internal successors, (1496), 19 states have internal predecessors, (1496), 0 states have call successors, (0), 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 12:10:03,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:03,103 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:03,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-13 12:10:03,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:03,304 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:03,305 INFO L85 PathProgramCache]: Analyzing trace with hash -353194299, now seen corresponding path program 13 times [2022-12-13 12:10:03,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:03,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305785670] [2022-12-13 12:10:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:03,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:03,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:03,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305785670] [2022-12-13 12:10:03,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305785670] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:03,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096424036] [2022-12-13 12:10:03,468 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:10:03,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:03,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:03,469 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:03,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 12:10:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:03,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:03,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:03,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:03,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096424036] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:03,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:03,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-12-13 12:10:03,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113962832] [2022-12-13 12:10:03,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:03,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:10:03,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:03,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:10:03,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:10:03,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:03,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 158 transitions, 1909 flow. Second operand has 24 states, 24 states have (on average 78.875) internal successors, (1893), 24 states have internal predecessors, (1893), 0 states have call successors, (0), 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 12:10:03,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:03,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:03,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:05,363 INFO L130 PetriNetUnfolder]: 436/915 cut-off events. [2022-12-13 12:10:05,363 INFO L131 PetriNetUnfolder]: For 16287/16287 co-relation queries the response was YES. [2022-12-13 12:10:05,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5889 conditions, 915 events. 436/915 cut-off events. For 16287/16287 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5189 event pairs, 6 based on Foata normal form. 6/921 useless extension candidates. Maximal degree in co-relation 5821. Up to 187 conditions per place. [2022-12-13 12:10:05,370 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 146 selfloop transitions, 120 changer transitions 46/312 dead transitions. [2022-12-13 12:10:05,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 312 transitions, 3578 flow [2022-12-13 12:10:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-13 12:10:05,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-13 12:10:05,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3623 transitions. [2022-12-13 12:10:05,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4179741578218736 [2022-12-13 12:10:05,375 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3623 transitions. [2022-12-13 12:10:05,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3623 transitions. [2022-12-13 12:10:05,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:05,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3623 transitions. [2022-12-13 12:10:05,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 82.3409090909091) internal successors, (3623), 44 states have internal predecessors, (3623), 0 states have call successors, (0), 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 12:10:05,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 197.0) internal successors, (8865), 45 states have internal predecessors, (8865), 0 states have call successors, (0), 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 12:10:05,385 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 197.0) internal successors, (8865), 45 states have internal predecessors, (8865), 0 states have call successors, (0), 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 12:10:05,385 INFO L175 Difference]: Start difference. First operand has 195 places, 158 transitions, 1909 flow. Second operand 44 states and 3623 transitions. [2022-12-13 12:10:05,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 312 transitions, 3578 flow [2022-12-13 12:10:05,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 312 transitions, 3028 flow, removed 94 selfloop flow, removed 25 redundant places. [2022-12-13 12:10:05,426 INFO L231 Difference]: Finished difference. Result has 209 places, 173 transitions, 1971 flow [2022-12-13 12:10:05,426 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1971, PETRI_PLACES=209, PETRI_TRANSITIONS=173} [2022-12-13 12:10:05,426 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2022-12-13 12:10:05,426 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 173 transitions, 1971 flow [2022-12-13 12:10:05,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 78.875) internal successors, (1893), 24 states have internal predecessors, (1893), 0 states have call successors, (0), 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 12:10:05,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:05,427 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:05,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 12:10:05,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:05,628 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:05,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:05,629 INFO L85 PathProgramCache]: Analyzing trace with hash -848680249, now seen corresponding path program 14 times [2022-12-13 12:10:05,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:05,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454986329] [2022-12-13 12:10:05,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:05,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:05,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:05,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454986329] [2022-12-13 12:10:05,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454986329] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:05,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415734710] [2022-12-13 12:10:05,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:10:05,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:05,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:05,765 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:05,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 12:10:05,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:10:05,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:05,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:05,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:06,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:06,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415734710] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:06,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:06,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-12-13 12:10:06,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721079354] [2022-12-13 12:10:06,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:06,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:10:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:10:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:10:06,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:06,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 173 transitions, 1971 flow. Second operand has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:06,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:06,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:06,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:07,620 INFO L130 PetriNetUnfolder]: 534/1123 cut-off events. [2022-12-13 12:10:07,620 INFO L131 PetriNetUnfolder]: For 15512/15512 co-relation queries the response was YES. [2022-12-13 12:10:07,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6956 conditions, 1123 events. 534/1123 cut-off events. For 15512/15512 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6763 event pairs, 6 based on Foata normal form. 12/1131 useless extension candidates. Maximal degree in co-relation 6890. Up to 199 conditions per place. [2022-12-13 12:10:07,626 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 130 selfloop transitions, 140 changer transitions 85/355 dead transitions. [2022-12-13 12:10:07,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 355 transitions, 4367 flow [2022-12-13 12:10:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 12:10:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-13 12:10:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3116 transitions. [2022-12-13 12:10:07,629 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41624365482233505 [2022-12-13 12:10:07,629 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3116 transitions. [2022-12-13 12:10:07,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3116 transitions. [2022-12-13 12:10:07,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:07,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3116 transitions. [2022-12-13 12:10:07,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 82.0) internal successors, (3116), 38 states have internal predecessors, (3116), 0 states have call successors, (0), 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 12:10:07,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 197.0) internal successors, (7683), 39 states have internal predecessors, (7683), 0 states have call successors, (0), 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 12:10:07,635 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 197.0) internal successors, (7683), 39 states have internal predecessors, (7683), 0 states have call successors, (0), 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 12:10:07,635 INFO L175 Difference]: Start difference. First operand has 209 places, 173 transitions, 1971 flow. Second operand 38 states and 3116 transitions. [2022-12-13 12:10:07,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 355 transitions, 4367 flow [2022-12-13 12:10:07,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 355 transitions, 3994 flow, removed 91 selfloop flow, removed 24 redundant places. [2022-12-13 12:10:07,700 INFO L231 Difference]: Finished difference. Result has 227 places, 191 transitions, 2650 flow [2022-12-13 12:10:07,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=2650, PETRI_PLACES=227, PETRI_TRANSITIONS=191} [2022-12-13 12:10:07,701 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 198 predicate places. [2022-12-13 12:10:07,701 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 191 transitions, 2650 flow [2022-12-13 12:10:07,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:07,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:07,701 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:07,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 12:10:07,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:07,903 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:07,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:07,904 INFO L85 PathProgramCache]: Analyzing trace with hash 9004989, now seen corresponding path program 15 times [2022-12-13 12:10:07,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:07,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646618219] [2022-12-13 12:10:07,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:07,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:08,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:08,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646618219] [2022-12-13 12:10:08,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646618219] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:08,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170853151] [2022-12-13 12:10:08,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:10:08,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:08,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:08,081 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:08,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 12:10:08,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 12:10:08,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:08,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:08,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:08,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:08,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170853151] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:08,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:08,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-12-13 12:10:08,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784873038] [2022-12-13 12:10:08,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:08,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:10:08,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:08,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:10:08,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:10:08,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:08,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 191 transitions, 2650 flow. Second operand has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:08,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:08,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:08,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:10,336 INFO L130 PetriNetUnfolder]: 558/1174 cut-off events. [2022-12-13 12:10:10,336 INFO L131 PetriNetUnfolder]: For 18780/18780 co-relation queries the response was YES. [2022-12-13 12:10:10,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8049 conditions, 1174 events. 558/1174 cut-off events. For 18780/18780 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7193 event pairs, 4 based on Foata normal form. 13/1181 useless extension candidates. Maximal degree in co-relation 7973. Up to 217 conditions per place. [2022-12-13 12:10:10,344 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 151 selfloop transitions, 179 changer transitions 36/366 dead transitions. [2022-12-13 12:10:10,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 366 transitions, 4758 flow [2022-12-13 12:10:10,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 12:10:10,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-13 12:10:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3538 transitions. [2022-12-13 12:10:10,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41766025262660844 [2022-12-13 12:10:10,355 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3538 transitions. [2022-12-13 12:10:10,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3538 transitions. [2022-12-13 12:10:10,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:10,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3538 transitions. [2022-12-13 12:10:10,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 82.27906976744185) internal successors, (3538), 43 states have internal predecessors, (3538), 0 states have call successors, (0), 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 12:10:10,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 197.0) internal successors, (8668), 44 states have internal predecessors, (8668), 0 states have call successors, (0), 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 12:10:10,362 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 197.0) internal successors, (8668), 44 states have internal predecessors, (8668), 0 states have call successors, (0), 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 12:10:10,362 INFO L175 Difference]: Start difference. First operand has 227 places, 191 transitions, 2650 flow. Second operand 43 states and 3538 transitions. [2022-12-13 12:10:10,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 366 transitions, 4758 flow [2022-12-13 12:10:10,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 366 transitions, 3993 flow, removed 301 selfloop flow, removed 30 redundant places. [2022-12-13 12:10:10,429 INFO L231 Difference]: Finished difference. Result has 229 places, 224 transitions, 2994 flow [2022-12-13 12:10:10,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=2994, PETRI_PLACES=229, PETRI_TRANSITIONS=224} [2022-12-13 12:10:10,429 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 200 predicate places. [2022-12-13 12:10:10,430 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 224 transitions, 2994 flow [2022-12-13 12:10:10,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:10,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:10,430 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:10,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 12:10:10,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:10,631 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:10,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:10,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1688420962, now seen corresponding path program 7 times [2022-12-13 12:10:10,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:10,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753550216] [2022-12-13 12:10:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:10,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:10,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:10,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753550216] [2022-12-13 12:10:10,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753550216] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:10,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605093591] [2022-12-13 12:10:10,790 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:10:10,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:10,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:10,791 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:10,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 12:10:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:10,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 12:10:10,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:10,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:11,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605093591] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:11,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:11,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-12-13 12:10:11,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553463710] [2022-12-13 12:10:11,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:11,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 12:10:11,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:11,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 12:10:11,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:10:11,243 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:11,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 224 transitions, 2994 flow. Second operand has 20 states, 20 states have (on average 78.75) internal successors, (1575), 20 states have internal predecessors, (1575), 0 states have call successors, (0), 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 12:10:11,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:11,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:11,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:11,891 INFO L130 PetriNetUnfolder]: 582/1197 cut-off events. [2022-12-13 12:10:11,891 INFO L131 PetriNetUnfolder]: For 17894/17894 co-relation queries the response was YES. [2022-12-13 12:10:11,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8233 conditions, 1197 events. 582/1197 cut-off events. For 17894/17894 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7149 event pairs, 24 based on Foata normal form. 18/1209 useless extension candidates. Maximal degree in co-relation 8158. Up to 386 conditions per place. [2022-12-13 12:10:11,898 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 184 selfloop transitions, 112 changer transitions 16/312 dead transitions. [2022-12-13 12:10:11,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 312 transitions, 4290 flow [2022-12-13 12:10:11,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 12:10:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 12:10:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1666 transitions. [2022-12-13 12:10:11,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4228426395939086 [2022-12-13 12:10:11,900 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1666 transitions. [2022-12-13 12:10:11,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1666 transitions. [2022-12-13 12:10:11,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:11,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1666 transitions. [2022-12-13 12:10:11,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 83.3) internal successors, (1666), 20 states have internal predecessors, (1666), 0 states have call successors, (0), 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 12:10:11,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 197.0) internal successors, (4137), 21 states have internal predecessors, (4137), 0 states have call successors, (0), 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 12:10:11,905 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 197.0) internal successors, (4137), 21 states have internal predecessors, (4137), 0 states have call successors, (0), 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 12:10:11,905 INFO L175 Difference]: Start difference. First operand has 229 places, 224 transitions, 2994 flow. Second operand 20 states and 1666 transitions. [2022-12-13 12:10:11,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 312 transitions, 4290 flow [2022-12-13 12:10:11,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 312 transitions, 3770 flow, removed 151 selfloop flow, removed 27 redundant places. [2022-12-13 12:10:11,963 INFO L231 Difference]: Finished difference. Result has 222 places, 234 transitions, 3094 flow [2022-12-13 12:10:11,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2619, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3094, PETRI_PLACES=222, PETRI_TRANSITIONS=234} [2022-12-13 12:10:11,964 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2022-12-13 12:10:11,964 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 234 transitions, 3094 flow [2022-12-13 12:10:11,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 78.75) internal successors, (1575), 20 states have internal predecessors, (1575), 0 states have call successors, (0), 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 12:10:11,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:11,964 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:11,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-13 12:10:12,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 12:10:12,165 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:12,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1732962535, now seen corresponding path program 16 times [2022-12-13 12:10:12,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:12,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564632477] [2022-12-13 12:10:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:12,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:12,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:12,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564632477] [2022-12-13 12:10:12,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564632477] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:12,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34864667] [2022-12-13 12:10:12,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:10:12,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:12,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:12,357 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:12,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 12:10:12,410 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:10:12,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:12,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:12,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:12,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:12,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34864667] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:12,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:12,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-12-13 12:10:12,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440513673] [2022-12-13 12:10:12,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:12,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:10:12,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:12,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:10:12,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:10:13,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:13,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 234 transitions, 3094 flow. Second operand has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:13,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:13,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:13,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:14,948 INFO L130 PetriNetUnfolder]: 656/1327 cut-off events. [2022-12-13 12:10:14,948 INFO L131 PetriNetUnfolder]: For 14244/14244 co-relation queries the response was YES. [2022-12-13 12:10:14,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 1327 events. 656/1327 cut-off events. For 14244/14244 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8041 event pairs, 8 based on Foata normal form. 10/1337 useless extension candidates. Maximal degree in co-relation 8670. Up to 339 conditions per place. [2022-12-13 12:10:14,956 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 147 selfloop transitions, 198 changer transitions 26/371 dead transitions. [2022-12-13 12:10:14,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 371 transitions, 4864 flow [2022-12-13 12:10:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 12:10:14,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-13 12:10:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2876 transitions. [2022-12-13 12:10:14,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41711385061638867 [2022-12-13 12:10:14,959 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2876 transitions. [2022-12-13 12:10:14,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2876 transitions. [2022-12-13 12:10:14,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:14,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2876 transitions. [2022-12-13 12:10:14,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 82.17142857142858) internal successors, (2876), 35 states have internal predecessors, (2876), 0 states have call successors, (0), 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 12:10:14,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 197.0) internal successors, (7092), 36 states have internal predecessors, (7092), 0 states have call successors, (0), 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 12:10:14,964 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 197.0) internal successors, (7092), 36 states have internal predecessors, (7092), 0 states have call successors, (0), 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 12:10:14,964 INFO L175 Difference]: Start difference. First operand has 222 places, 234 transitions, 3094 flow. Second operand 35 states and 2876 transitions. [2022-12-13 12:10:14,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 371 transitions, 4864 flow [2022-12-13 12:10:15,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 371 transitions, 4702 flow, removed 41 selfloop flow, removed 13 redundant places. [2022-12-13 12:10:15,020 INFO L231 Difference]: Finished difference. Result has 246 places, 262 transitions, 3850 flow [2022-12-13 12:10:15,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2967, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3850, PETRI_PLACES=246, PETRI_TRANSITIONS=262} [2022-12-13 12:10:15,020 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2022-12-13 12:10:15,020 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 262 transitions, 3850 flow [2022-12-13 12:10:15,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:15,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:15,021 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:15,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-13 12:10:15,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 12:10:15,221 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:15,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash 547692964, now seen corresponding path program 8 times [2022-12-13 12:10:15,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:15,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953684141] [2022-12-13 12:10:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:15,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:15,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:15,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953684141] [2022-12-13 12:10:15,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953684141] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:15,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688882780] [2022-12-13 12:10:15,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:10:15,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:15,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:15,323 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:15,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 12:10:15,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:10:15,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:15,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 12:10:15,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:15,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:15,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688882780] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:15,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:15,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-12-13 12:10:15,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397300003] [2022-12-13 12:10:15,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:15,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 12:10:15,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:15,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 12:10:15,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:10:15,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:15,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 262 transitions, 3850 flow. Second operand has 20 states, 20 states have (on average 78.7) internal successors, (1574), 20 states have internal predecessors, (1574), 0 states have call successors, (0), 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 12:10:15,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:15,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:15,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:16,320 INFO L130 PetriNetUnfolder]: 630/1240 cut-off events. [2022-12-13 12:10:16,320 INFO L131 PetriNetUnfolder]: For 14532/14532 co-relation queries the response was YES. [2022-12-13 12:10:16,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8928 conditions, 1240 events. 630/1240 cut-off events. For 14532/14532 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7135 event pairs, 4 based on Foata normal form. 13/1253 useless extension candidates. Maximal degree in co-relation 8853. Up to 402 conditions per place. [2022-12-13 12:10:16,328 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 181 selfloop transitions, 79 changer transitions 70/330 dead transitions. [2022-12-13 12:10:16,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 330 transitions, 4899 flow [2022-12-13 12:10:16,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 12:10:16,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 12:10:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1802 transitions. [2022-12-13 12:10:16,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4157821873557914 [2022-12-13 12:10:16,331 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1802 transitions. [2022-12-13 12:10:16,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1802 transitions. [2022-12-13 12:10:16,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:16,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1802 transitions. [2022-12-13 12:10:16,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 81.9090909090909) internal successors, (1802), 22 states have internal predecessors, (1802), 0 states have call successors, (0), 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 12:10:16,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 197.0) internal successors, (4531), 23 states have internal predecessors, (4531), 0 states have call successors, (0), 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 12:10:16,337 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 197.0) internal successors, (4531), 23 states have internal predecessors, (4531), 0 states have call successors, (0), 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 12:10:16,337 INFO L175 Difference]: Start difference. First operand has 246 places, 262 transitions, 3850 flow. Second operand 22 states and 1802 transitions. [2022-12-13 12:10:16,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 330 transitions, 4899 flow [2022-12-13 12:10:16,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 330 transitions, 4669 flow, removed 30 selfloop flow, removed 26 redundant places. [2022-12-13 12:10:16,402 INFO L231 Difference]: Finished difference. Result has 239 places, 227 transitions, 3145 flow [2022-12-13 12:10:16,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=3634, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3145, PETRI_PLACES=239, PETRI_TRANSITIONS=227} [2022-12-13 12:10:16,403 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 210 predicate places. [2022-12-13 12:10:16,403 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 227 transitions, 3145 flow [2022-12-13 12:10:16,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 78.7) internal successors, (1574), 20 states have internal predecessors, (1574), 0 states have call successors, (0), 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 12:10:16,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:16,403 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:16,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 12:10:16,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 12:10:16,605 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1568222079, now seen corresponding path program 17 times [2022-12-13 12:10:16,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:16,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357235244] [2022-12-13 12:10:16,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:16,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:16,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:16,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357235244] [2022-12-13 12:10:16,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357235244] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:16,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092811289] [2022-12-13 12:10:16,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:10:16,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:16,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:16,760 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:16,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 12:10:16,807 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 12:10:16,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:16,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:16,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:16,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:17,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092811289] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:17,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:17,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-12-13 12:10:17,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167053916] [2022-12-13 12:10:17,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:17,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:10:17,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:17,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:10:17,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:10:17,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:17,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 227 transitions, 3145 flow. Second operand has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:17,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:17,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:17,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:17,693 INFO L130 PetriNetUnfolder]: 485/991 cut-off events. [2022-12-13 12:10:17,693 INFO L131 PetriNetUnfolder]: For 11466/11466 co-relation queries the response was YES. [2022-12-13 12:10:17,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6885 conditions, 991 events. 485/991 cut-off events. For 11466/11466 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5513 event pairs, 5 based on Foata normal form. 3/994 useless extension candidates. Maximal degree in co-relation 6812. Up to 655 conditions per place. [2022-12-13 12:10:17,699 INFO L137 encePairwiseOnDemand]: 190/197 looper letters, 197 selfloop transitions, 31 changer transitions 29/257 dead transitions. [2022-12-13 12:10:17,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 257 transitions, 3798 flow [2022-12-13 12:10:17,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:10:17,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 12:10:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1214 transitions. [2022-12-13 12:10:17,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41082910321489 [2022-12-13 12:10:17,701 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1214 transitions. [2022-12-13 12:10:17,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1214 transitions. [2022-12-13 12:10:17,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:17,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1214 transitions. [2022-12-13 12:10:17,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 80.93333333333334) internal successors, (1214), 15 states have internal predecessors, (1214), 0 states have call successors, (0), 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 12:10:17,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 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 12:10:17,703 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 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 12:10:17,703 INFO L175 Difference]: Start difference. First operand has 239 places, 227 transitions, 3145 flow. Second operand 15 states and 1214 transitions. [2022-12-13 12:10:17,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 257 transitions, 3798 flow [2022-12-13 12:10:17,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 257 transitions, 3496 flow, removed 33 selfloop flow, removed 27 redundant places. [2022-12-13 12:10:17,748 INFO L231 Difference]: Finished difference. Result has 215 places, 222 transitions, 2866 flow [2022-12-13 12:10:17,749 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2849, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2866, PETRI_PLACES=215, PETRI_TRANSITIONS=222} [2022-12-13 12:10:17,749 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2022-12-13 12:10:17,749 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 222 transitions, 2866 flow [2022-12-13 12:10:17,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:17,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:17,749 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:17,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 12:10:17,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 12:10:17,950 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:17,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:17,951 INFO L85 PathProgramCache]: Analyzing trace with hash -294239432, now seen corresponding path program 9 times [2022-12-13 12:10:17,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:17,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678323698] [2022-12-13 12:10:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:17,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:18,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:18,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678323698] [2022-12-13 12:10:18,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678323698] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:18,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980671861] [2022-12-13 12:10:18,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:10:18,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:18,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:18,073 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:18,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 12:10:18,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 12:10:18,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:18,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 12:10:18,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:18,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:18,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980671861] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:18,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:18,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2022-12-13 12:10:18,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795984289] [2022-12-13 12:10:18,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:18,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:10:18,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:18,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:10:18,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:10:18,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:18,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 222 transitions, 2866 flow. Second operand has 19 states, 19 states have (on average 78.6842105263158) internal successors, (1495), 19 states have internal predecessors, (1495), 0 states have call successors, (0), 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 12:10:18,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:18,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:18,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:18,987 INFO L130 PetriNetUnfolder]: 477/968 cut-off events. [2022-12-13 12:10:18,987 INFO L131 PetriNetUnfolder]: For 8415/8415 co-relation queries the response was YES. [2022-12-13 12:10:18,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6409 conditions, 968 events. 477/968 cut-off events. For 8415/8415 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5325 event pairs, 5 based on Foata normal form. 2/970 useless extension candidates. Maximal degree in co-relation 6346. Up to 764 conditions per place. [2022-12-13 12:10:18,994 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 228 selfloop transitions, 18 changer transitions 23/269 dead transitions. [2022-12-13 12:10:18,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 269 transitions, 3741 flow [2022-12-13 12:10:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:10:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 12:10:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1229 transitions. [2022-12-13 12:10:18,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41590524534686973 [2022-12-13 12:10:18,996 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1229 transitions. [2022-12-13 12:10:18,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1229 transitions. [2022-12-13 12:10:18,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:18,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1229 transitions. [2022-12-13 12:10:18,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 81.93333333333334) internal successors, (1229), 15 states have internal predecessors, (1229), 0 states have call successors, (0), 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 12:10:18,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 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 12:10:18,999 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 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 12:10:19,000 INFO L175 Difference]: Start difference. First operand has 215 places, 222 transitions, 2866 flow. Second operand 15 states and 1229 transitions. [2022-12-13 12:10:19,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 269 transitions, 3741 flow [2022-12-13 12:10:19,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 269 transitions, 3656 flow, removed 14 selfloop flow, removed 16 redundant places. [2022-12-13 12:10:19,034 INFO L231 Difference]: Finished difference. Result has 207 places, 221 transitions, 2867 flow [2022-12-13 12:10:19,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2867, PETRI_PLACES=207, PETRI_TRANSITIONS=221} [2022-12-13 12:10:19,035 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2022-12-13 12:10:19,035 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 221 transitions, 2867 flow [2022-12-13 12:10:19,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 78.6842105263158) internal successors, (1495), 19 states have internal predecessors, (1495), 0 states have call successors, (0), 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 12:10:19,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:19,035 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:19,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-12-13 12:10:19,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:19,237 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:19,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1647934629, now seen corresponding path program 18 times [2022-12-13 12:10:19,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:19,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490692178] [2022-12-13 12:10:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:19,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:19,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:19,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490692178] [2022-12-13 12:10:19,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490692178] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:19,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214464122] [2022-12-13 12:10:19,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:10:19,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:19,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:19,405 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:19,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 12:10:19,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 12:10:19,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:19,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:19,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:19,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:19,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214464122] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:19,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:19,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-12-13 12:10:19,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826707022] [2022-12-13 12:10:19,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:19,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:10:19,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:19,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:10:19,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:10:19,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:19,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 221 transitions, 2867 flow. Second operand has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:19,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:19,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:19,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:20,471 INFO L130 PetriNetUnfolder]: 477/982 cut-off events. [2022-12-13 12:10:20,471 INFO L131 PetriNetUnfolder]: For 8654/8654 co-relation queries the response was YES. [2022-12-13 12:10:20,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6538 conditions, 982 events. 477/982 cut-off events. For 8654/8654 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5518 event pairs, 9 based on Foata normal form. 4/986 useless extension candidates. Maximal degree in co-relation 6479. Up to 629 conditions per place. [2022-12-13 12:10:20,476 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 193 selfloop transitions, 38 changer transitions 33/264 dead transitions. [2022-12-13 12:10:20,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 264 transitions, 3606 flow [2022-12-13 12:10:20,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 12:10:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 12:10:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1694 transitions. [2022-12-13 12:10:20,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40947546531302875 [2022-12-13 12:10:20,478 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1694 transitions. [2022-12-13 12:10:20,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1694 transitions. [2022-12-13 12:10:20,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:20,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1694 transitions. [2022-12-13 12:10:20,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 80.66666666666667) internal successors, (1694), 21 states have internal predecessors, (1694), 0 states have call successors, (0), 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 12:10:20,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 197.0) internal successors, (4334), 22 states have internal predecessors, (4334), 0 states have call successors, (0), 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 12:10:20,481 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 197.0) internal successors, (4334), 22 states have internal predecessors, (4334), 0 states have call successors, (0), 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 12:10:20,481 INFO L175 Difference]: Start difference. First operand has 207 places, 221 transitions, 2867 flow. Second operand 21 states and 1694 transitions. [2022-12-13 12:10:20,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 264 transitions, 3606 flow [2022-12-13 12:10:20,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 264 transitions, 3545 flow, removed 16 selfloop flow, removed 11 redundant places. [2022-12-13 12:10:20,513 INFO L231 Difference]: Finished difference. Result has 218 places, 220 transitions, 2907 flow [2022-12-13 12:10:20,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2907, PETRI_PLACES=218, PETRI_TRANSITIONS=220} [2022-12-13 12:10:20,513 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 189 predicate places. [2022-12-13 12:10:20,513 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 220 transitions, 2907 flow [2022-12-13 12:10:20,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:20,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:20,514 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:20,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-12-13 12:10:20,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:20,715 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:20,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:20,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2046141743, now seen corresponding path program 19 times [2022-12-13 12:10:20,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:20,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203385629] [2022-12-13 12:10:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:20,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:20,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:20,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203385629] [2022-12-13 12:10:20,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203385629] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:20,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174171001] [2022-12-13 12:10:20,926 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:10:20,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:20,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:20,927 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:20,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 12:10:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:20,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:20,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:21,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:21,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174171001] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:21,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:21,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2022-12-13 12:10:21,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336134004] [2022-12-13 12:10:21,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:21,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 12:10:21,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:21,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 12:10:21,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2022-12-13 12:10:21,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 197 [2022-12-13 12:10:21,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 220 transitions, 2907 flow. Second operand has 25 states, 25 states have (on average 75.76) internal successors, (1894), 25 states have internal predecessors, (1894), 0 states have call successors, (0), 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 12:10:21,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:21,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 197 [2022-12-13 12:10:21,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:22,537 INFO L130 PetriNetUnfolder]: 484/1001 cut-off events. [2022-12-13 12:10:22,537 INFO L131 PetriNetUnfolder]: For 9177/9177 co-relation queries the response was YES. [2022-12-13 12:10:22,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6776 conditions, 1001 events. 484/1001 cut-off events. For 9177/9177 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5683 event pairs, 5 based on Foata normal form. 4/1005 useless extension candidates. Maximal degree in co-relation 6713. Up to 584 conditions per place. [2022-12-13 12:10:22,543 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 205 selfloop transitions, 48 changer transitions 31/284 dead transitions. [2022-12-13 12:10:22,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 284 transitions, 3982 flow [2022-12-13 12:10:22,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 12:10:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 12:10:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1716 transitions. [2022-12-13 12:10:22,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39593908629441626 [2022-12-13 12:10:22,545 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1716 transitions. [2022-12-13 12:10:22,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1716 transitions. [2022-12-13 12:10:22,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:22,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1716 transitions. [2022-12-13 12:10:22,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 0 states have call successors, (0), 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 12:10:22,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 197.0) internal successors, (4531), 23 states have internal predecessors, (4531), 0 states have call successors, (0), 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 12:10:22,548 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 197.0) internal successors, (4531), 23 states have internal predecessors, (4531), 0 states have call successors, (0), 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 12:10:22,548 INFO L175 Difference]: Start difference. First operand has 218 places, 220 transitions, 2907 flow. Second operand 22 states and 1716 transitions. [2022-12-13 12:10:22,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 284 transitions, 3982 flow [2022-12-13 12:10:22,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 284 transitions, 3918 flow, removed 23 selfloop flow, removed 12 redundant places. [2022-12-13 12:10:22,581 INFO L231 Difference]: Finished difference. Result has 222 places, 224 transitions, 3146 flow [2022-12-13 12:10:22,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2863, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3146, PETRI_PLACES=222, PETRI_TRANSITIONS=224} [2022-12-13 12:10:22,582 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2022-12-13 12:10:22,582 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 224 transitions, 3146 flow [2022-12-13 12:10:22,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 75.76) internal successors, (1894), 25 states have internal predecessors, (1894), 0 states have call successors, (0), 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 12:10:22,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:22,582 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:22,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-13 12:10:22,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 12:10:22,784 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:22,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash 563445806, now seen corresponding path program 10 times [2022-12-13 12:10:22,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:22,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073931470] [2022-12-13 12:10:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:22,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:22,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:22,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073931470] [2022-12-13 12:10:22,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073931470] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:22,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676654225] [2022-12-13 12:10:22,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:10:22,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:22,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:22,942 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:22,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 12:10:23,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:10:23,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:23,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 12:10:23,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:23,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:23,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676654225] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:23,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:23,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-12-13 12:10:23,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971230748] [2022-12-13 12:10:23,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:23,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 12:10:23,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:23,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 12:10:23,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:10:23,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:23,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 224 transitions, 3146 flow. Second operand has 20 states, 20 states have (on average 78.6) internal successors, (1572), 20 states have internal predecessors, (1572), 0 states have call successors, (0), 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 12:10:23,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:23,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:23,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:24,015 INFO L130 PetriNetUnfolder]: 469/981 cut-off events. [2022-12-13 12:10:24,015 INFO L131 PetriNetUnfolder]: For 10878/10878 co-relation queries the response was YES. [2022-12-13 12:10:24,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6923 conditions, 981 events. 469/981 cut-off events. For 10878/10878 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5619 event pairs, 5 based on Foata normal form. 5/986 useless extension candidates. Maximal degree in co-relation 6858. Up to 764 conditions per place. [2022-12-13 12:10:24,020 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 224 selfloop transitions, 12 changer transitions 41/277 dead transitions. [2022-12-13 12:10:24,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 277 transitions, 4040 flow [2022-12-13 12:10:24,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 12:10:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 12:10:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1473 transitions. [2022-12-13 12:10:24,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41539763113367173 [2022-12-13 12:10:24,022 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1473 transitions. [2022-12-13 12:10:24,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1473 transitions. [2022-12-13 12:10:24,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:24,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1473 transitions. [2022-12-13 12:10:24,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 81.83333333333333) internal successors, (1473), 18 states have internal predecessors, (1473), 0 states have call successors, (0), 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 12:10:24,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 197.0) internal successors, (3743), 19 states have internal predecessors, (3743), 0 states have call successors, (0), 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 12:10:24,032 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 197.0) internal successors, (3743), 19 states have internal predecessors, (3743), 0 states have call successors, (0), 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 12:10:24,032 INFO L175 Difference]: Start difference. First operand has 222 places, 224 transitions, 3146 flow. Second operand 18 states and 1473 transitions. [2022-12-13 12:10:24,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 277 transitions, 4040 flow [2022-12-13 12:10:24,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 277 transitions, 3815 flow, removed 65 selfloop flow, removed 12 redundant places. [2022-12-13 12:10:24,070 INFO L231 Difference]: Finished difference. Result has 223 places, 216 transitions, 2913 flow [2022-12-13 12:10:24,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2933, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2913, PETRI_PLACES=223, PETRI_TRANSITIONS=216} [2022-12-13 12:10:24,070 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 194 predicate places. [2022-12-13 12:10:24,070 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 216 transitions, 2913 flow [2022-12-13 12:10:24,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 78.6) internal successors, (1572), 20 states have internal predecessors, (1572), 0 states have call successors, (0), 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 12:10:24,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:24,070 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:24,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-12-13 12:10:24,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-13 12:10:24,272 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:24,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:24,273 INFO L85 PathProgramCache]: Analyzing trace with hash -370017903, now seen corresponding path program 20 times [2022-12-13 12:10:24,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:24,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571900356] [2022-12-13 12:10:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:24,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:24,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:24,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571900356] [2022-12-13 12:10:24,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571900356] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:24,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905325267] [2022-12-13 12:10:24,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:10:24,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:24,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:24,445 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:24,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-13 12:10:24,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:10:24,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:24,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:24,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:24,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:24,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905325267] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:24,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:24,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-12-13 12:10:24,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871190570] [2022-12-13 12:10:24,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:24,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:10:24,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:24,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:10:24,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:10:25,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:25,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 216 transitions, 2913 flow. Second operand has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:25,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:25,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:25,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:25,964 INFO L130 PetriNetUnfolder]: 446/949 cut-off events. [2022-12-13 12:10:25,964 INFO L131 PetriNetUnfolder]: For 9245/9245 co-relation queries the response was YES. [2022-12-13 12:10:25,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6492 conditions, 949 events. 446/949 cut-off events. For 9245/9245 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5447 event pairs, 5 based on Foata normal form. 4/953 useless extension candidates. Maximal degree in co-relation 6425. Up to 576 conditions per place. [2022-12-13 12:10:25,969 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 213 selfloop transitions, 43 changer transitions 28/284 dead transitions. [2022-12-13 12:10:25,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 284 transitions, 3779 flow [2022-12-13 12:10:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 12:10:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 12:10:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1879 transitions. [2022-12-13 12:10:25,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4146987419995586 [2022-12-13 12:10:25,971 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1879 transitions. [2022-12-13 12:10:25,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1879 transitions. [2022-12-13 12:10:25,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:25,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1879 transitions. [2022-12-13 12:10:25,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 81.69565217391305) internal successors, (1879), 23 states have internal predecessors, (1879), 0 states have call successors, (0), 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 12:10:25,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 197.0) internal successors, (4728), 24 states have internal predecessors, (4728), 0 states have call successors, (0), 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 12:10:25,975 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 197.0) internal successors, (4728), 24 states have internal predecessors, (4728), 0 states have call successors, (0), 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 12:10:25,976 INFO L175 Difference]: Start difference. First operand has 223 places, 216 transitions, 2913 flow. Second operand 23 states and 1879 transitions. [2022-12-13 12:10:25,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 284 transitions, 3779 flow [2022-12-13 12:10:26,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 284 transitions, 3714 flow, removed 21 selfloop flow, removed 14 redundant places. [2022-12-13 12:10:26,010 INFO L231 Difference]: Finished difference. Result has 224 places, 217 transitions, 2949 flow [2022-12-13 12:10:26,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2870, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2949, PETRI_PLACES=224, PETRI_TRANSITIONS=217} [2022-12-13 12:10:26,011 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2022-12-13 12:10:26,011 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 217 transitions, 2949 flow [2022-12-13 12:10:26,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 0 states have call successors, (0), 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 12:10:26,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:26,011 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:26,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-12-13 12:10:26,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:26,212 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:26,214 INFO L85 PathProgramCache]: Analyzing trace with hash -402192183, now seen corresponding path program 21 times [2022-12-13 12:10:26,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:26,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128742456] [2022-12-13 12:10:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:26,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:26,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:26,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128742456] [2022-12-13 12:10:26,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128742456] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:26,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346338332] [2022-12-13 12:10:26,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:10:26,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:26,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:26,372 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:26,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-13 12:10:26,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 12:10:26,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:26,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:26,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:26,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:26,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346338332] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:26,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:26,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2022-12-13 12:10:26,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833940166] [2022-12-13 12:10:26,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:26,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 12:10:26,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:26,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 12:10:26,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-12-13 12:10:27,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 197 [2022-12-13 12:10:27,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 217 transitions, 2949 flow. Second operand has 25 states, 25 states have (on average 75.84) internal successors, (1896), 25 states have internal predecessors, (1896), 0 states have call successors, (0), 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 12:10:27,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:27,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 197 [2022-12-13 12:10:27,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:27,895 INFO L130 PetriNetUnfolder]: 437/905 cut-off events. [2022-12-13 12:10:27,895 INFO L131 PetriNetUnfolder]: For 9323/9323 co-relation queries the response was YES. [2022-12-13 12:10:27,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6337 conditions, 905 events. 437/905 cut-off events. For 9323/9323 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4975 event pairs, 5 based on Foata normal form. 3/908 useless extension candidates. Maximal degree in co-relation 6272. Up to 576 conditions per place. [2022-12-13 12:10:27,900 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 190 selfloop transitions, 39 changer transitions 27/256 dead transitions. [2022-12-13 12:10:27,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 256 transitions, 3564 flow [2022-12-13 12:10:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 12:10:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 12:10:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1562 transitions. [2022-12-13 12:10:27,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3964467005076142 [2022-12-13 12:10:27,902 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1562 transitions. [2022-12-13 12:10:27,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1562 transitions. [2022-12-13 12:10:27,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:27,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1562 transitions. [2022-12-13 12:10:27,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 78.1) internal successors, (1562), 20 states have internal predecessors, (1562), 0 states have call successors, (0), 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 12:10:27,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 197.0) internal successors, (4137), 21 states have internal predecessors, (4137), 0 states have call successors, (0), 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 12:10:27,907 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 197.0) internal successors, (4137), 21 states have internal predecessors, (4137), 0 states have call successors, (0), 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 12:10:27,908 INFO L175 Difference]: Start difference. First operand has 224 places, 217 transitions, 2949 flow. Second operand 20 states and 1562 transitions. [2022-12-13 12:10:27,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 256 transitions, 3564 flow [2022-12-13 12:10:27,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 256 transitions, 3472 flow, removed 16 selfloop flow, removed 11 redundant places. [2022-12-13 12:10:27,959 INFO L231 Difference]: Finished difference. Result has 224 places, 209 transitions, 2840 flow [2022-12-13 12:10:27,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2840, PETRI_PLACES=224, PETRI_TRANSITIONS=209} [2022-12-13 12:10:27,960 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2022-12-13 12:10:27,960 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 209 transitions, 2840 flow [2022-12-13 12:10:27,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 75.84) internal successors, (1896), 25 states have internal predecessors, (1896), 0 states have call successors, (0), 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 12:10:27,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:27,960 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:27,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-13 12:10:28,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:28,162 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:28,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:28,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1860836032, now seen corresponding path program 11 times [2022-12-13 12:10:28,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:28,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753284586] [2022-12-13 12:10:28,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:28,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:28,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:28,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753284586] [2022-12-13 12:10:28,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753284586] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:28,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605006935] [2022-12-13 12:10:28,288 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:10:28,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:28,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:28,289 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:28,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-13 12:10:28,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 12:10:28,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:28,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:28,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:28,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:28,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605006935] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:28,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:28,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 18 [2022-12-13 12:10:28,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968663512] [2022-12-13 12:10:28,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:28,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 12:10:28,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:28,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 12:10:28,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:10:28,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:28,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 209 transitions, 2840 flow. Second operand has 20 states, 20 states have (on average 78.85) internal successors, (1577), 20 states have internal predecessors, (1577), 0 states have call successors, (0), 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 12:10:28,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:28,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:28,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:29,098 INFO L130 PetriNetUnfolder]: 450/951 cut-off events. [2022-12-13 12:10:29,098 INFO L131 PetriNetUnfolder]: For 10393/10393 co-relation queries the response was YES. [2022-12-13 12:10:29,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6776 conditions, 951 events. 450/951 cut-off events. For 10393/10393 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5419 event pairs, 1 based on Foata normal form. 10/961 useless extension candidates. Maximal degree in co-relation 6713. Up to 307 conditions per place. [2022-12-13 12:10:29,103 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 155 selfloop transitions, 42 changer transitions 100/297 dead transitions. [2022-12-13 12:10:29,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 297 transitions, 4601 flow [2022-12-13 12:10:29,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 12:10:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 12:10:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1462 transitions. [2022-12-13 12:10:29,105 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41229554427523973 [2022-12-13 12:10:29,105 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1462 transitions. [2022-12-13 12:10:29,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1462 transitions. [2022-12-13 12:10:29,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:29,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1462 transitions. [2022-12-13 12:10:29,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 81.22222222222223) internal successors, (1462), 18 states have internal predecessors, (1462), 0 states have call successors, (0), 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 12:10:29,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 197.0) internal successors, (3743), 19 states have internal predecessors, (3743), 0 states have call successors, (0), 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 12:10:29,107 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 197.0) internal successors, (3743), 19 states have internal predecessors, (3743), 0 states have call successors, (0), 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 12:10:29,107 INFO L175 Difference]: Start difference. First operand has 224 places, 209 transitions, 2840 flow. Second operand 18 states and 1462 transitions. [2022-12-13 12:10:29,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 297 transitions, 4601 flow [2022-12-13 12:10:29,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 297 transitions, 4461 flow, removed 7 selfloop flow, removed 18 redundant places. [2022-12-13 12:10:29,150 INFO L231 Difference]: Finished difference. Result has 214 places, 168 transitions, 2364 flow [2022-12-13 12:10:29,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2735, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2364, PETRI_PLACES=214, PETRI_TRANSITIONS=168} [2022-12-13 12:10:29,150 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2022-12-13 12:10:29,150 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 168 transitions, 2364 flow [2022-12-13 12:10:29,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 78.85) internal successors, (1577), 20 states have internal predecessors, (1577), 0 states have call successors, (0), 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 12:10:29,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:29,151 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:29,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-13 12:10:29,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-12-13 12:10:29,352 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:29,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:29,353 INFO L85 PathProgramCache]: Analyzing trace with hash -231656641, now seen corresponding path program 12 times [2022-12-13 12:10:29,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:29,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357368022] [2022-12-13 12:10:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:29,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:29,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:29,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357368022] [2022-12-13 12:10:29,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357368022] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:29,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898586926] [2022-12-13 12:10:29,507 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:10:29,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:29,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:29,508 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:29,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-13 12:10:29,567 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 12:10:29,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:29,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:29,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:29,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:29,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898586926] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:29,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:29,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 19 [2022-12-13 12:10:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356759864] [2022-12-13 12:10:29,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:29,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 12:10:29,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:29,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 12:10:29,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:10:29,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:29,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 168 transitions, 2364 flow. Second operand has 21 states, 21 states have (on average 78.71428571428571) internal successors, (1653), 21 states have internal predecessors, (1653), 0 states have call successors, (0), 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 12:10:29,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:29,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:29,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:30,363 INFO L130 PetriNetUnfolder]: 338/760 cut-off events. [2022-12-13 12:10:30,363 INFO L131 PetriNetUnfolder]: For 11333/11333 co-relation queries the response was YES. [2022-12-13 12:10:30,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5846 conditions, 760 events. 338/760 cut-off events. For 11333/11333 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4292 event pairs, 1 based on Foata normal form. 11/771 useless extension candidates. Maximal degree in co-relation 5782. Up to 240 conditions per place. [2022-12-13 12:10:30,369 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 90 selfloop transitions, 37 changer transitions 121/248 dead transitions. [2022-12-13 12:10:30,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 248 transitions, 3783 flow [2022-12-13 12:10:30,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 12:10:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 12:10:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1869 transitions. [2022-12-13 12:10:30,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41249172368130654 [2022-12-13 12:10:30,372 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1869 transitions. [2022-12-13 12:10:30,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1869 transitions. [2022-12-13 12:10:30,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:30,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1869 transitions. [2022-12-13 12:10:30,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 81.26086956521739) internal successors, (1869), 23 states have internal predecessors, (1869), 0 states have call successors, (0), 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 12:10:30,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 197.0) internal successors, (4728), 24 states have internal predecessors, (4728), 0 states have call successors, (0), 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 12:10:30,378 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 197.0) internal successors, (4728), 24 states have internal predecessors, (4728), 0 states have call successors, (0), 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 12:10:30,378 INFO L175 Difference]: Start difference. First operand has 214 places, 168 transitions, 2364 flow. Second operand 23 states and 1869 transitions. [2022-12-13 12:10:30,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 248 transitions, 3783 flow [2022-12-13 12:10:30,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 248 transitions, 3513 flow, removed 77 selfloop flow, removed 25 redundant places. [2022-12-13 12:10:30,417 INFO L231 Difference]: Finished difference. Result has 202 places, 94 transitions, 1367 flow [2022-12-13 12:10:30,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2178, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1367, PETRI_PLACES=202, PETRI_TRANSITIONS=94} [2022-12-13 12:10:30,418 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2022-12-13 12:10:30,418 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 94 transitions, 1367 flow [2022-12-13 12:10:30,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 78.71428571428571) internal successors, (1653), 21 states have internal predecessors, (1653), 0 states have call successors, (0), 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 12:10:30,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:30,418 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:30,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-12-13 12:10:30,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-12-13 12:10:30,619 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:30,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:30,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1400799612, now seen corresponding path program 13 times [2022-12-13 12:10:30,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:30,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76256970] [2022-12-13 12:10:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:30,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:30,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:30,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76256970] [2022-12-13 12:10:30,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76256970] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:30,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248942704] [2022-12-13 12:10:30,756 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:10:30,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:30,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:30,757 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:30,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-12-13 12:10:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:30,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:30,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:30,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:10:31,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248942704] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:31,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:31,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 19 [2022-12-13 12:10:31,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456647198] [2022-12-13 12:10:31,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:31,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 12:10:31,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:31,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 12:10:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:10:31,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:31,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 94 transitions, 1367 flow. Second operand has 21 states, 21 states have (on average 78.71428571428571) internal successors, (1653), 21 states have internal predecessors, (1653), 0 states have call successors, (0), 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 12:10:31,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:31,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:31,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:31,657 INFO L130 PetriNetUnfolder]: 157/398 cut-off events. [2022-12-13 12:10:31,657 INFO L131 PetriNetUnfolder]: For 3182/3182 co-relation queries the response was YES. [2022-12-13 12:10:31,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2766 conditions, 398 events. 157/398 cut-off events. For 3182/3182 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1951 event pairs, 9 based on Foata normal form. 4/402 useless extension candidates. Maximal degree in co-relation 2712. Up to 113 conditions per place. [2022-12-13 12:10:31,659 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 52 selfloop transitions, 16 changer transitions 71/139 dead transitions. [2022-12-13 12:10:31,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 139 transitions, 1958 flow [2022-12-13 12:10:31,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 12:10:31,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 12:10:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1464 transitions. [2022-12-13 12:10:31,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4128595600676819 [2022-12-13 12:10:31,661 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1464 transitions. [2022-12-13 12:10:31,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1464 transitions. [2022-12-13 12:10:31,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:31,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1464 transitions. [2022-12-13 12:10:31,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 81.33333333333333) internal successors, (1464), 18 states have internal predecessors, (1464), 0 states have call successors, (0), 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 12:10:31,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 197.0) internal successors, (3743), 19 states have internal predecessors, (3743), 0 states have call successors, (0), 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 12:10:31,664 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 197.0) internal successors, (3743), 19 states have internal predecessors, (3743), 0 states have call successors, (0), 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 12:10:31,664 INFO L175 Difference]: Start difference. First operand has 202 places, 94 transitions, 1367 flow. Second operand 18 states and 1464 transitions. [2022-12-13 12:10:31,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 139 transitions, 1958 flow [2022-12-13 12:10:31,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 139 transitions, 1634 flow, removed 51 selfloop flow, removed 39 redundant places. [2022-12-13 12:10:31,674 INFO L231 Difference]: Finished difference. Result has 169 places, 52 transitions, 599 flow [2022-12-13 12:10:31,674 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=599, PETRI_PLACES=169, PETRI_TRANSITIONS=52} [2022-12-13 12:10:31,674 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2022-12-13 12:10:31,675 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 52 transitions, 599 flow [2022-12-13 12:10:31,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 78.71428571428571) internal successors, (1653), 21 states have internal predecessors, (1653), 0 states have call successors, (0), 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 12:10:31,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:31,675 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:31,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-12-13 12:10:31,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-12-13 12:10:31,876 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:31,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:31,877 INFO L85 PathProgramCache]: Analyzing trace with hash -132572413, now seen corresponding path program 14 times [2022-12-13 12:10:31,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:31,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709189768] [2022-12-13 12:10:31,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:31,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:32,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:32,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709189768] [2022-12-13 12:10:32,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709189768] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:32,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741193423] [2022-12-13 12:10:32,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:10:32,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:32,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:32,055 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:32,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-12-13 12:10:32,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:10:32,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:32,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:32,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:32,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:10:32,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741193423] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:32,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:32,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2022-12-13 12:10:32,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954056452] [2022-12-13 12:10:32,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:32,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 12:10:32,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:32,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 12:10:32,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-12-13 12:10:32,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:32,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 52 transitions, 599 flow. Second operand has 22 states, 22 states have (on average 78.5909090909091) internal successors, (1729), 22 states have internal predecessors, (1729), 0 states have call successors, (0), 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 12:10:32,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:32,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:32,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:32,873 INFO L130 PetriNetUnfolder]: 74/212 cut-off events. [2022-12-13 12:10:32,873 INFO L131 PetriNetUnfolder]: For 970/970 co-relation queries the response was YES. [2022-12-13 12:10:32,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 212 events. 74/212 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 884 event pairs, 1 based on Foata normal form. 7/219 useless extension candidates. Maximal degree in co-relation 1213. Up to 66 conditions per place. [2022-12-13 12:10:32,874 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 25 selfloop transitions, 7 changer transitions 48/80 dead transitions. [2022-12-13 12:10:32,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 80 transitions, 845 flow [2022-12-13 12:10:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 12:10:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 12:10:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1291 transitions. [2022-12-13 12:10:32,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4095812182741117 [2022-12-13 12:10:32,875 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1291 transitions. [2022-12-13 12:10:32,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1291 transitions. [2022-12-13 12:10:32,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:32,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1291 transitions. [2022-12-13 12:10:32,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 80.6875) internal successors, (1291), 16 states have internal predecessors, (1291), 0 states have call successors, (0), 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 12:10:32,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 197.0) internal successors, (3349), 17 states have internal predecessors, (3349), 0 states have call successors, (0), 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 12:10:32,878 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 197.0) internal successors, (3349), 17 states have internal predecessors, (3349), 0 states have call successors, (0), 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 12:10:32,878 INFO L175 Difference]: Start difference. First operand has 169 places, 52 transitions, 599 flow. Second operand 16 states and 1291 transitions. [2022-12-13 12:10:32,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 80 transitions, 845 flow [2022-12-13 12:10:32,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 80 transitions, 612 flow, removed 24 selfloop flow, removed 43 redundant places. [2022-12-13 12:10:32,880 INFO L231 Difference]: Finished difference. Result has 109 places, 29 transitions, 207 flow [2022-12-13 12:10:32,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=207, PETRI_PLACES=109, PETRI_TRANSITIONS=29} [2022-12-13 12:10:32,881 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2022-12-13 12:10:32,881 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 29 transitions, 207 flow [2022-12-13 12:10:32,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 78.5909090909091) internal successors, (1729), 22 states have internal predecessors, (1729), 0 states have call successors, (0), 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 12:10:32,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:32,881 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:32,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-12-13 12:10:33,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:33,082 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 12:10:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:33,083 INFO L85 PathProgramCache]: Analyzing trace with hash -753115365, now seen corresponding path program 15 times [2022-12-13 12:10:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:33,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870379411] [2022-12-13 12:10:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:33,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:33,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870379411] [2022-12-13 12:10:33,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870379411] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:33,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060893672] [2022-12-13 12:10:33,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:10:33,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:33,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:33,219 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:33,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-12-13 12:10:33,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 12:10:33,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:10:33,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 12:10:33,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:10:33,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:10:33,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060893672] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:33,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:33,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2022-12-13 12:10:33,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364517213] [2022-12-13 12:10:33,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:33,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 12:10:33,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:33,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 12:10:33,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-12-13 12:10:33,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2022-12-13 12:10:33,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 29 transitions, 207 flow. Second operand has 22 states, 22 states have (on average 78.63636363636364) internal successors, (1730), 22 states have internal predecessors, (1730), 0 states have call successors, (0), 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 12:10:33,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:33,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2022-12-13 12:10:33,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:33,938 INFO L130 PetriNetUnfolder]: 33/108 cut-off events. [2022-12-13 12:10:33,938 INFO L131 PetriNetUnfolder]: For 170/170 co-relation queries the response was YES. [2022-12-13 12:10:33,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 108 events. 33/108 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 347 event pairs, 0 based on Foata normal form. 6/114 useless extension candidates. Maximal degree in co-relation 565. Up to 33 conditions per place. [2022-12-13 12:10:33,939 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2022-12-13 12:10:33,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 54 transitions, 467 flow [2022-12-13 12:10:33,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:10:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 12:10:33,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1201 transitions. [2022-12-13 12:10:33,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40642978003384095 [2022-12-13 12:10:33,940 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1201 transitions. [2022-12-13 12:10:33,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1201 transitions. [2022-12-13 12:10:33,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:33,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1201 transitions. [2022-12-13 12:10:33,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 80.06666666666666) internal successors, (1201), 15 states have internal predecessors, (1201), 0 states have call successors, (0), 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 12:10:33,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 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 12:10:33,942 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 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 12:10:33,942 INFO L175 Difference]: Start difference. First operand has 109 places, 29 transitions, 207 flow. Second operand 15 states and 1201 transitions. [2022-12-13 12:10:33,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 54 transitions, 467 flow [2022-12-13 12:10:33,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 54 transitions, 411 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-12-13 12:10:33,943 INFO L231 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2022-12-13 12:10:33,943 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2022-12-13 12:10:33,943 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2022-12-13 12:10:33,944 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2022-12-13 12:10:33,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 78.63636363636364) internal successors, (1730), 22 states have internal predecessors, (1730), 0 states have call successors, (0), 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 12:10:33,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-12-13 12:10:33,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-12-13 12:10:33,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-13 12:10:33,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-13 12:10:33,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-12-13 12:10:33,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-12-13 12:10:33,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-13 12:10:33,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-13 12:10:33,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2022-12-13 12:10:33,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-12-13 12:10:33,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-13 12:10:33,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-13 12:10:33,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-12-13 12:10:34,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-12-13 12:10:34,148 INFO L445 BasicCegarLoop]: Path program histogram: [21, 15, 6, 1, 1, 1, 1, 1] [2022-12-13 12:10:34,153 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 12:10:34,153 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 12:10:34,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:10:34 BasicIcfg [2022-12-13 12:10:34,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 12:10:34,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 12:10:34,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 12:10:34,156 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 12:10:34,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:09:32" (3/4) ... [2022-12-13 12:10:34,159 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 12:10:34,163 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 12:10:34,163 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 12:10:34,166 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-13 12:10:34,166 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 12:10:34,167 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 12:10:34,167 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 12:10:34,188 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 12:10:34,188 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 12:10:34,188 INFO L158 Benchmark]: Toolchain (without parser) took 62461.56ms. Allocated memory was 121.6MB in the beginning and 446.7MB in the end (delta: 325.1MB). Free memory was 84.6MB in the beginning and 130.1MB in the end (delta: -45.5MB). Peak memory consumption was 282.7MB. Max. memory is 16.1GB. [2022-12-13 12:10:34,189 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:10:34,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.66ms. Allocated memory is still 121.6MB. Free memory was 84.3MB in the beginning and 73.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 12:10:34,189 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.53ms. Allocated memory is still 121.6MB. Free memory was 73.1MB in the beginning and 71.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:10:34,189 INFO L158 Benchmark]: Boogie Preprocessor took 15.23ms. Allocated memory is still 121.6MB. Free memory was 71.4MB in the beginning and 70.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:10:34,189 INFO L158 Benchmark]: RCFGBuilder took 338.61ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 70.1MB in the beginning and 116.4MB in the end (delta: -46.3MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2022-12-13 12:10:34,189 INFO L158 Benchmark]: TraceAbstraction took 61875.44ms. Allocated memory was 146.8MB in the beginning and 446.7MB in the end (delta: 299.9MB). Free memory was 115.5MB in the beginning and 132.0MB in the end (delta: -16.5MB). Peak memory consumption was 283.8MB. Max. memory is 16.1GB. [2022-12-13 12:10:34,189 INFO L158 Benchmark]: Witness Printer took 32.33ms. Allocated memory is still 446.7MB. Free memory was 132.0MB in the beginning and 130.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:10:34,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.66ms. Allocated memory is still 121.6MB. Free memory was 84.3MB in the beginning and 73.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.53ms. Allocated memory is still 121.6MB. Free memory was 73.1MB in the beginning and 71.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.23ms. Allocated memory is still 121.6MB. Free memory was 71.4MB in the beginning and 70.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 338.61ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 70.1MB in the beginning and 116.4MB in the end (delta: -46.3MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * TraceAbstraction took 61875.44ms. Allocated memory was 146.8MB in the beginning and 446.7MB in the end (delta: 299.9MB). Free memory was 115.5MB in the beginning and 132.0MB in the end (delta: -16.5MB). Peak memory consumption was 283.8MB. Max. memory is 16.1GB. * Witness Printer took 32.33ms. Allocated memory is still 446.7MB. Free memory was 132.0MB in the beginning and 130.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 95 PlacesBefore, 29 PlacesAfterwards, 94 TransitionsBefore, 24 TransitionsAfterwards, 660 CoEnabledTransitionPairs, 6 FixpointIterations, 56 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 96 TotalNumberOfCompositions, 751 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 704, independent: 700, independent conditional: 0, independent unconditional: 700, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 348, independent: 346, independent conditional: 0, independent unconditional: 346, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 704, independent: 354, independent conditional: 0, independent unconditional: 354, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 348, unknown conditional: 0, unknown unconditional: 348] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 76]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 61]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 116 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: 61.8s, OverallIterations: 47, TraceHistogramMax: 3, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.0s, AutomataDifference: 33.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9981 SdHoareTripleChecker+Valid, 15.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9251 mSDsluCounter, 5119 SdHoareTripleChecker+Invalid, 13.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4807 mSDsCounter, 1167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34397 IncrementalHoareTripleChecker+Invalid, 35564 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1167 mSolverCounterUnsat, 312 mSDtfsCounter, 34397 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1886 GetRequests, 581 SyntacticMatches, 48 SemanticMatches, 1257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12203 ImplicationChecksByTransitivity, 18.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3850occurred in iteration=34, InterpolantAutomatonStates: 810, 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: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 1207 NumberOfCodeBlocks, 1207 NumberOfCodeBlocksAsserted, 122 NumberOfCheckSat, 1644 ConstructedInterpolants, 0 QuantifiedInterpolants, 20950 SizeOfPredicates, 144 NumberOfNonLiveVariables, 4994 ConjunctsInSsa, 904 ConjunctsInUnsatCore, 119 InterpolantComputations, 11 PerfectInterpolantSequences, 20/414 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 12:10:34,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3610749-78ee-4b69-904a-e0c2e7965bf2/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: TRUE