./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-easy11.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_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/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_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/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_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/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 a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --- 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 11:09:26,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:09:26,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:09:26,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:09:26,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:09:26,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:09:26,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:09:26,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:09:26,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:09:26,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:09:26,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:09:26,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:09:26,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:09:26,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:09:26,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:09:26,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:09:26,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:09:26,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:09:26,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:09:26,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:09:26,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:09:26,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:09:26,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:09:26,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:09:26,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:09:26,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:09:26,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:09:26,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:09:26,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:09:26,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:09:26,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:09:26,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:09:26,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:09:26,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:09:26,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:09:26,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:09:26,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:09:26,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:09:26,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:09:26,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:09:26,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:09:26,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 11:09:26,734 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:09:26,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:09:26,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:09:26,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:09:26,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:09:26,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:09:26,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:09:26,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:09:26,737 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:09:26,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:09:26,737 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:09:26,737 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:09:26,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:09:26,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:09:26,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:09:26,738 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:09:26,738 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:09:26,738 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:09:26,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:09:26,739 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:09:26,739 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:09:26,739 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:09:26,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:09:26,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:09:26,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:09:26,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:09:26,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:09:26,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:09:26,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:09:26,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:09:26,741 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:09:26,741 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:09:26,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:09:26,741 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:09:26,741 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_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 [2022-12-13 11:09:26,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:09:26,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:09:26,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:09:26,991 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:09:26,992 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:09:26,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-12-13 11:09:29,649 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:09:29,826 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:09:29,827 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-12-13 11:09:29,833 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/data/fd6c571a8/a54e151c98e74879aa823d078bb27b14/FLAG112a1c949 [2022-12-13 11:09:29,847 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/data/fd6c571a8/a54e151c98e74879aa823d078bb27b14 [2022-12-13 11:09:29,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:09:29,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:09:29,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:09:29,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:09:29,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:09:29,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:09:29" (1/1) ... [2022-12-13 11:09:29,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f3825c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:29, skipping insertion in model container [2022-12-13 11:09:29,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:09:29" (1/1) ... [2022-12-13 11:09:29,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:09:29,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:09:30,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:09:30,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:09:30,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:09:30,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:09:30,035 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_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-12-13 11:09:30,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:09:30,046 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:09:30,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:09:30,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:09:30,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:09:30,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:09:30,061 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_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-12-13 11:09:30,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:09:30,072 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:09:30,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30 WrapperNode [2022-12-13 11:09:30,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:09:30,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:09:30,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:09:30,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:09:30,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30" (1/1) ... [2022-12-13 11:09:30,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30" (1/1) ... [2022-12-13 11:09:30,100 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-13 11:09:30,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:09:30,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:09:30,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:09:30,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:09:30,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30" (1/1) ... [2022-12-13 11:09:30,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30" (1/1) ... [2022-12-13 11:09:30,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30" (1/1) ... [2022-12-13 11:09:30,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30" (1/1) ... [2022-12-13 11:09:30,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30" (1/1) ... [2022-12-13 11:09:30,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30" (1/1) ... [2022-12-13 11:09:30,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30" (1/1) ... [2022-12-13 11:09:30,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30" (1/1) ... [2022-12-13 11:09:30,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:09:30,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:09:30,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:09:30,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:09:30,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30" (1/1) ... [2022-12-13 11:09:30,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:09:30,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:30,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:09:30,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:09:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:09:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:09:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:09:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:09:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:09:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:09:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:09:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:09:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:09:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:09:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:09:30,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:09:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:09:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:09:30,184 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 11:09:30,255 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:09:30,257 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:09:30,414 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:09:30,421 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:09:30,421 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 11:09:30,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:09:30 BoogieIcfgContainer [2022-12-13 11:09:30,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:09:30,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:09:30,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:09:30,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:09:30,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:09:29" (1/3) ... [2022-12-13 11:09:30,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b856f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:09:30, skipping insertion in model container [2022-12-13 11:09:30,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:09:30" (2/3) ... [2022-12-13 11:09:30,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b856f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:09:30, skipping insertion in model container [2022-12-13 11:09:30,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:09:30" (3/3) ... [2022-12-13 11:09:30,432 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-12-13 11:09:30,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:09:30,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 11:09:30,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:09:30,512 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 11:09:30,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 99 transitions, 214 flow [2022-12-13 11:09:30,595 INFO L130 PetriNetUnfolder]: 6/97 cut-off events. [2022-12-13 11:09:30,596 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:09:30,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 6/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-12-13 11:09:30,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 99 transitions, 214 flow [2022-12-13 11:09:30,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 92 transitions, 196 flow [2022-12-13 11:09:30,610 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:09:30,620 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 92 transitions, 196 flow [2022-12-13 11:09:30,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 92 transitions, 196 flow [2022-12-13 11:09:30,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 92 transitions, 196 flow [2022-12-13 11:09:30,652 INFO L130 PetriNetUnfolder]: 6/92 cut-off events. [2022-12-13 11:09:30,652 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:09:30,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 6/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-12-13 11:09:30,654 INFO L119 LiptonReduction]: Number of co-enabled transitions 748 [2022-12-13 11:09:32,753 INFO L134 LiptonReduction]: Checked pairs total: 780 [2022-12-13 11:09:32,753 INFO L136 LiptonReduction]: Total number of compositions: 86 [2022-12-13 11:09:32,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:09:32,770 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;@732435e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:09:32,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 11:09:32,771 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 11:09:32,771 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:09:32,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:32,772 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 11:09:32,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:09:32,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:32,776 INFO L85 PathProgramCache]: Analyzing trace with hash 364, now seen corresponding path program 1 times [2022-12-13 11:09:32,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:32,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448572021] [2022-12-13 11:09:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:32,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:32,848 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 11:09:32,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:32,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448572021] [2022-12-13 11:09:32,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448572021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:32,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:32,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 11:09:32,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728020572] [2022-12-13 11:09:32,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:32,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:09:32,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:32,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:09:32,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:09:32,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 185 [2022-12-13 11:09:32,874 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 11:09:32,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:32,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 185 [2022-12-13 11:09:32,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:32,924 INFO L130 PetriNetUnfolder]: 88/151 cut-off events. [2022-12-13 11:09:32,924 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 11:09:32,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 151 events. 88/151 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 377 event pairs, 56 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 252. Up to 152 conditions per place. [2022-12-13 11:09:32,925 INFO L137 encePairwiseOnDemand]: 182/185 looper letters, 21 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2022-12-13 11:09:32,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 96 flow [2022-12-13 11:09:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:09:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 11:09:32,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 204 transitions. [2022-12-13 11:09:32,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5513513513513514 [2022-12-13 11:09:32,936 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 204 transitions. [2022-12-13 11:09:32,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 204 transitions. [2022-12-13 11:09:32,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:32,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 204 transitions. [2022-12-13 11:09:32,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:32,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:32,944 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:32,946 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 204 transitions. [2022-12-13 11:09:32,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 96 flow [2022-12-13 11:09:32,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:09:32,949 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2022-12-13 11:09:32,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 11:09:32,953 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2022-12-13 11:09:32,953 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2022-12-13 11:09:32,953 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 11:09:32,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:32,954 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:09:32,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:09:32,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:09:32,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:32,954 INFO L85 PathProgramCache]: Analyzing trace with hash 358739, now seen corresponding path program 1 times [2022-12-13 11:09:32,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:32,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433034767] [2022-12-13 11:09:32,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:32,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:33,125 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 11:09:33,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:33,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433034767] [2022-12-13 11:09:33,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433034767] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:33,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:33,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:09:33,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745314732] [2022-12-13 11:09:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:33,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:09:33,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:33,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:09:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:09:33,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 185 [2022-12-13 11:09:33,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:33,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 185 [2022-12-13 11:09:33,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:33,204 INFO L130 PetriNetUnfolder]: 82/139 cut-off events. [2022-12-13 11:09:33,204 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:09:33,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 139 events. 82/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 343 event pairs, 52 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 282. Up to 139 conditions per place. [2022-12-13 11:09:33,206 INFO L137 encePairwiseOnDemand]: 182/185 looper letters, 18 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2022-12-13 11:09:33,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 80 flow [2022-12-13 11:09:33,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:09:33,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:09:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2022-12-13 11:09:33,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2022-12-13 11:09:33,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2022-12-13 11:09:33,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2022-12-13 11:09:33,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:33,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2022-12-13 11:09:33,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,216 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 276 transitions. [2022-12-13 11:09:33,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 80 flow [2022-12-13 11:09:33,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:09:33,217 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2022-12-13 11:09:33,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 11:09:33,218 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2022-12-13 11:09:33,218 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2022-12-13 11:09:33,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:33,218 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:09:33,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:09:33,219 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:09:33,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash 358738, now seen corresponding path program 1 times [2022-12-13 11:09:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:33,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838869077] [2022-12-13 11:09:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:33,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:33,270 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 11:09:33,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:33,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838869077] [2022-12-13 11:09:33,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838869077] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:33,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:33,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:09:33,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392088227] [2022-12-13 11:09:33,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:33,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:09:33,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:09:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:09:33,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 185 [2022-12-13 11:09:33,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 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 11:09:33,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:33,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 185 [2022-12-13 11:09:33,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:33,345 INFO L130 PetriNetUnfolder]: 76/127 cut-off events. [2022-12-13 11:09:33,345 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:09:33,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 127 events. 76/127 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 299 event pairs, 48 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 259. Up to 127 conditions per place. [2022-12-13 11:09:33,347 INFO L137 encePairwiseOnDemand]: 182/185 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2022-12-13 11:09:33,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2022-12-13 11:09:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:09:33,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:09:33,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2022-12-13 11:09:33,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4720720720720721 [2022-12-13 11:09:33,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2022-12-13 11:09:33,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2022-12-13 11:09:33,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:33,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2022-12-13 11:09:33,351 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 11:09:33,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,355 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 262 transitions. [2022-12-13 11:09:33,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2022-12-13 11:09:33,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 73 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:09:33,356 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2022-12-13 11:09:33,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 11:09:33,357 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-12-13 11:09:33,357 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2022-12-13 11:09:33,357 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 11:09:33,357 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:33,357 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:09:33,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:09:33,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:09:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash 344754156, now seen corresponding path program 1 times [2022-12-13 11:09:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:33,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572047725] [2022-12-13 11:09:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:33,424 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 11:09:33,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:33,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572047725] [2022-12-13 11:09:33,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572047725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:33,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:33,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:09:33,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724208074] [2022-12-13 11:09:33,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:33,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:09:33,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:33,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:09:33,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:09:33,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 185 [2022-12-13 11:09:33,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 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 11:09:33,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:33,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 185 [2022-12-13 11:09:33,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:33,502 INFO L130 PetriNetUnfolder]: 58/100 cut-off events. [2022-12-13 11:09:33,502 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:09:33,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 100 events. 58/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 211 event pairs, 36 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 206. Up to 100 conditions per place. [2022-12-13 11:09:33,504 INFO L137 encePairwiseOnDemand]: 183/185 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2022-12-13 11:09:33,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 71 flow [2022-12-13 11:09:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:09:33,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:09:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2022-12-13 11:09:33,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44684684684684683 [2022-12-13 11:09:33,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2022-12-13 11:09:33,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2022-12-13 11:09:33,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:33,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2022-12-13 11:09:33,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,509 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 248 transitions. [2022-12-13 11:09:33,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 71 flow [2022-12-13 11:09:33,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:09:33,509 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2022-12-13 11:09:33,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 11:09:33,510 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-12-13 11:09:33,510 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2022-12-13 11:09:33,510 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 11:09:33,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:33,510 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:09:33,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:09:33,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:09:33,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:33,511 INFO L85 PathProgramCache]: Analyzing trace with hash 344754157, now seen corresponding path program 1 times [2022-12-13 11:09:33,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:33,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382465429] [2022-12-13 11:09:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:33,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:33,580 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 11:09:33,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:33,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382465429] [2022-12-13 11:09:33,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382465429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:33,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:33,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:09:33,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658724391] [2022-12-13 11:09:33,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:33,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:09:33,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:09:33,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:09:33,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 185 [2022-12-13 11:09:33,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:33,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 185 [2022-12-13 11:09:33,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:33,634 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2022-12-13 11:09:33,634 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:09:33,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 73 events. 40/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 130 event pairs, 24 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 153. Up to 73 conditions per place. [2022-12-13 11:09:33,635 INFO L137 encePairwiseOnDemand]: 183/185 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2022-12-13 11:09:33,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 68 flow [2022-12-13 11:09:33,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:09:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:09:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2022-12-13 11:09:33,637 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4882882882882883 [2022-12-13 11:09:33,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2022-12-13 11:09:33,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2022-12-13 11:09:33,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:33,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2022-12-13 11:09:33,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,640 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 271 transitions. [2022-12-13 11:09:33,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 68 flow [2022-12-13 11:09:33,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:09:33,641 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2022-12-13 11:09:33,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 11:09:33,641 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-12-13 11:09:33,642 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2022-12-13 11:09:33,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:33,642 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:33,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:09:33,642 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 11:09:33,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash -335430611, now seen corresponding path program 1 times [2022-12-13 11:09:33,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:33,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388244549] [2022-12-13 11:09:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:33,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:33,838 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 11:09:33,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:33,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388244549] [2022-12-13 11:09:33,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388244549] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:33,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:33,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:33,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199434108] [2022-12-13 11:09:33,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:33,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:09:33,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:33,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:09:33,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:09:33,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 185 [2022-12-13 11:09:33,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:33,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:33,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 185 [2022-12-13 11:09:33,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:34,037 INFO L130 PetriNetUnfolder]: 46/88 cut-off events. [2022-12-13 11:09:34,038 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:09:34,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 88 events. 46/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 1 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 184. Up to 22 conditions per place. [2022-12-13 11:09:34,039 INFO L137 encePairwiseOnDemand]: 178/185 looper letters, 29 selfloop transitions, 8 changer transitions 5/42 dead transitions. [2022-12-13 11:09:34,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 42 transitions, 183 flow [2022-12-13 11:09:34,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:09:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:09:34,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 582 transitions. [2022-12-13 11:09:34,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4494208494208494 [2022-12-13 11:09:34,041 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 582 transitions. [2022-12-13 11:09:34,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 582 transitions. [2022-12-13 11:09:34,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:34,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 582 transitions. [2022-12-13 11:09:34,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,046 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,046 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 7 states and 582 transitions. [2022-12-13 11:09:34,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 42 transitions, 183 flow [2022-12-13 11:09:34,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:09:34,048 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 88 flow [2022-12-13 11:09:34,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2022-12-13 11:09:34,049 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2022-12-13 11:09:34,049 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 88 flow [2022-12-13 11:09:34,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:34,049 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:34,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:09:34,050 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 11:09:34,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:34,050 INFO L85 PathProgramCache]: Analyzing trace with hash -139600409, now seen corresponding path program 2 times [2022-12-13 11:09:34,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:34,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567590115] [2022-12-13 11:09:34,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:34,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:34,209 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 11:09:34,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:34,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567590115] [2022-12-13 11:09:34,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567590115] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:34,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:34,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:34,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782364389] [2022-12-13 11:09:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:34,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:09:34,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:34,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:09:34,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:09:34,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 185 [2022-12-13 11:09:34,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:34,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 185 [2022-12-13 11:09:34,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:34,379 INFO L130 PetriNetUnfolder]: 56/104 cut-off events. [2022-12-13 11:09:34,379 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-12-13 11:09:34,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 104 events. 56/104 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 226 event pairs, 7 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 312. Up to 57 conditions per place. [2022-12-13 11:09:34,381 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 27 selfloop transitions, 12 changer transitions 5/44 dead transitions. [2022-12-13 11:09:34,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 250 flow [2022-12-13 11:09:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:09:34,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:09:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 582 transitions. [2022-12-13 11:09:34,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4494208494208494 [2022-12-13 11:09:34,384 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 582 transitions. [2022-12-13 11:09:34,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 582 transitions. [2022-12-13 11:09:34,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:34,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 582 transitions. [2022-12-13 11:09:34,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,391 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,391 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 88 flow. Second operand 7 states and 582 transitions. [2022-12-13 11:09:34,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 250 flow [2022-12-13 11:09:34,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 240 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 11:09:34,393 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 162 flow [2022-12-13 11:09:34,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2022-12-13 11:09:34,394 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2022-12-13 11:09:34,394 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 162 flow [2022-12-13 11:09:34,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:34,395 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:34,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:09:34,395 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 11:09:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:34,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1201074499, now seen corresponding path program 3 times [2022-12-13 11:09:34,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:34,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705339537] [2022-12-13 11:09:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:34,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:34,516 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 11:09:34,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:34,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705339537] [2022-12-13 11:09:34,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705339537] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:34,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:34,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:34,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683977279] [2022-12-13 11:09:34,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:34,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:09:34,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:34,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:09:34,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:09:34,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 185 [2022-12-13 11:09:34,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:34,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 185 [2022-12-13 11:09:34,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:34,719 INFO L130 PetriNetUnfolder]: 66/120 cut-off events. [2022-12-13 11:09:34,719 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2022-12-13 11:09:34,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 120 events. 66/120 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 288 event pairs, 5 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 445. Up to 68 conditions per place. [2022-12-13 11:09:34,721 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 32 selfloop transitions, 15 changer transitions 5/52 dead transitions. [2022-12-13 11:09:34,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 368 flow [2022-12-13 11:09:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:09:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:09:34,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 584 transitions. [2022-12-13 11:09:34,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.450965250965251 [2022-12-13 11:09:34,722 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 584 transitions. [2022-12-13 11:09:34,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 584 transitions. [2022-12-13 11:09:34,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:34,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 584 transitions. [2022-12-13 11:09:34,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,725 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,725 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 162 flow. Second operand 7 states and 584 transitions. [2022-12-13 11:09:34,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 368 flow [2022-12-13 11:09:34,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 335 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-13 11:09:34,727 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 232 flow [2022-12-13 11:09:34,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2022-12-13 11:09:34,727 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2022-12-13 11:09:34,728 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 232 flow [2022-12-13 11:09:34,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:34,728 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:34,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:09:34,728 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 11:09:34,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:34,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2101830467, now seen corresponding path program 4 times [2022-12-13 11:09:34,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:34,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471244690] [2022-12-13 11:09:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:34,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:34,846 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 11:09:34,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:34,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471244690] [2022-12-13 11:09:34,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471244690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:34,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:34,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:34,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486428265] [2022-12-13 11:09:34,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:34,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:09:34,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:09:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:09:34,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 185 [2022-12-13 11:09:34,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:34,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:34,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 185 [2022-12-13 11:09:34,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:35,015 INFO L130 PetriNetUnfolder]: 65/121 cut-off events. [2022-12-13 11:09:35,015 INFO L131 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2022-12-13 11:09:35,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 121 events. 65/121 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 308 event pairs, 5 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 490. Up to 73 conditions per place. [2022-12-13 11:09:35,016 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 31 selfloop transitions, 15 changer transitions 5/51 dead transitions. [2022-12-13 11:09:35,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 402 flow [2022-12-13 11:09:35,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:09:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:09:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 582 transitions. [2022-12-13 11:09:35,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4494208494208494 [2022-12-13 11:09:35,018 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 582 transitions. [2022-12-13 11:09:35,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 582 transitions. [2022-12-13 11:09:35,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:35,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 582 transitions. [2022-12-13 11:09:35,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,020 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,021 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 232 flow. Second operand 7 states and 582 transitions. [2022-12-13 11:09:35,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 51 transitions, 402 flow [2022-12-13 11:09:35,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 358 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-12-13 11:09:35,024 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 232 flow [2022-12-13 11:09:35,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2022-12-13 11:09:35,025 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2022-12-13 11:09:35,025 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 232 flow [2022-12-13 11:09:35,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:35,026 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:35,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:09:35,026 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 11:09:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash -113682239, now seen corresponding path program 5 times [2022-12-13 11:09:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:35,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71712483] [2022-12-13 11:09:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:35,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:35,145 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 11:09:35,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:35,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71712483] [2022-12-13 11:09:35,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71712483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:35,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:35,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:35,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161325466] [2022-12-13 11:09:35,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:35,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:09:35,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:09:35,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:09:35,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 185 [2022-12-13 11:09:35,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:35,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 185 [2022-12-13 11:09:35,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:35,302 INFO L130 PetriNetUnfolder]: 66/124 cut-off events. [2022-12-13 11:09:35,302 INFO L131 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2022-12-13 11:09:35,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 124 events. 66/124 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 313 event pairs, 7 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 494. Up to 76 conditions per place. [2022-12-13 11:09:35,304 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 30 selfloop transitions, 15 changer transitions 5/50 dead transitions. [2022-12-13 11:09:35,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 397 flow [2022-12-13 11:09:35,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:09:35,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:09:35,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 580 transitions. [2022-12-13 11:09:35,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44787644787644787 [2022-12-13 11:09:35,305 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 580 transitions. [2022-12-13 11:09:35,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 580 transitions. [2022-12-13 11:09:35,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:35,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 580 transitions. [2022-12-13 11:09:35,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,308 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,308 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 232 flow. Second operand 7 states and 580 transitions. [2022-12-13 11:09:35,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 397 flow [2022-12-13 11:09:35,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 361 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 11:09:35,310 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 242 flow [2022-12-13 11:09:35,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2022-12-13 11:09:35,311 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2022-12-13 11:09:35,311 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 242 flow [2022-12-13 11:09:35,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:35,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:35,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:09:35,312 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 11:09:35,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:35,312 INFO L85 PathProgramCache]: Analyzing trace with hash 466142555, now seen corresponding path program 6 times [2022-12-13 11:09:35,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:35,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633115273] [2022-12-13 11:09:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:35,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:35,411 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 11:09:35,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:35,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633115273] [2022-12-13 11:09:35,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633115273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:35,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:35,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:35,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478074876] [2022-12-13 11:09:35,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:35,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:09:35,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:35,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:09:35,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:09:35,469 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 185 [2022-12-13 11:09:35,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:35,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 185 [2022-12-13 11:09:35,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:35,563 INFO L130 PetriNetUnfolder]: 67/127 cut-off events. [2022-12-13 11:09:35,563 INFO L131 PetriNetUnfolder]: For 333/333 co-relation queries the response was YES. [2022-12-13 11:09:35,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 127 events. 67/127 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 329 event pairs, 9 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 516. Up to 59 conditions per place. [2022-12-13 11:09:35,565 INFO L137 encePairwiseOnDemand]: 178/185 looper letters, 32 selfloop transitions, 14 changer transitions 5/51 dead transitions. [2022-12-13 11:09:35,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 417 flow [2022-12-13 11:09:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:09:35,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:09:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 576 transitions. [2022-12-13 11:09:35,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44478764478764476 [2022-12-13 11:09:35,568 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 576 transitions. [2022-12-13 11:09:35,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 576 transitions. [2022-12-13 11:09:35,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:35,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 576 transitions. [2022-12-13 11:09:35,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.28571428571429) internal successors, (576), 7 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,570 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,570 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 242 flow. Second operand 7 states and 576 transitions. [2022-12-13 11:09:35,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 417 flow [2022-12-13 11:09:35,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 379 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-13 11:09:35,572 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 248 flow [2022-12-13 11:09:35,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2022-12-13 11:09:35,573 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2022-12-13 11:09:35,573 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 248 flow [2022-12-13 11:09:35,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:35,573 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:35,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:09:35,573 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 11:09:35,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:35,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1245384757, now seen corresponding path program 1 times [2022-12-13 11:09:35,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:35,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759210773] [2022-12-13 11:09:35,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:35,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:35,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:35,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759210773] [2022-12-13 11:09:35,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759210773] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:35,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:35,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:35,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268975134] [2022-12-13 11:09:35,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:35,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:09:35,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:35,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:09:35,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:09:35,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 185 [2022-12-13 11:09:35,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:35,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 185 [2022-12-13 11:09:35,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:35,738 INFO L130 PetriNetUnfolder]: 104/195 cut-off events. [2022-12-13 11:09:35,738 INFO L131 PetriNetUnfolder]: For 645/645 co-relation queries the response was YES. [2022-12-13 11:09:35,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 195 events. 104/195 cut-off events. For 645/645 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 623 event pairs, 14 based on Foata normal form. 4/193 useless extension candidates. Maximal degree in co-relation 809. Up to 78 conditions per place. [2022-12-13 11:09:35,740 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 46 selfloop transitions, 22 changer transitions 4/72 dead transitions. [2022-12-13 11:09:35,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 590 flow [2022-12-13 11:09:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:09:35,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:09:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2022-12-13 11:09:35,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2022-12-13 11:09:35,742 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2022-12-13 11:09:35,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2022-12-13 11:09:35,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:35,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2022-12-13 11:09:35,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,745 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,745 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 248 flow. Second operand 7 states and 592 transitions. [2022-12-13 11:09:35,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 590 flow [2022-12-13 11:09:35,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 72 transitions, 522 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-12-13 11:09:35,748 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 366 flow [2022-12-13 11:09:35,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2022-12-13 11:09:35,748 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2022-12-13 11:09:35,749 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 366 flow [2022-12-13 11:09:35,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:35,749 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:35,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:09:35,749 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 11:09:35,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:35,750 INFO L85 PathProgramCache]: Analyzing trace with hash -440317335, now seen corresponding path program 2 times [2022-12-13 11:09:35,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:35,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224295832] [2022-12-13 11:09:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:35,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:35,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:35,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224295832] [2022-12-13 11:09:35,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224295832] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:35,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:35,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:35,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322630982] [2022-12-13 11:09:35,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:35,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:09:35,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:35,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:09:35,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:09:35,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 185 [2022-12-13 11:09:35,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:35,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 185 [2022-12-13 11:09:35,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:35,896 INFO L130 PetriNetUnfolder]: 110/205 cut-off events. [2022-12-13 11:09:35,897 INFO L131 PetriNetUnfolder]: For 1002/1002 co-relation queries the response was YES. [2022-12-13 11:09:35,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 205 events. 110/205 cut-off events. For 1002/1002 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 650 event pairs, 22 based on Foata normal form. 4/209 useless extension candidates. Maximal degree in co-relation 945. Up to 114 conditions per place. [2022-12-13 11:09:35,899 INFO L137 encePairwiseOnDemand]: 180/185 looper letters, 56 selfloop transitions, 15 changer transitions 0/71 dead transitions. [2022-12-13 11:09:35,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 635 flow [2022-12-13 11:09:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:09:35,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:09:35,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2022-12-13 11:09:35,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4681081081081081 [2022-12-13 11:09:35,901 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2022-12-13 11:09:35,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2022-12-13 11:09:35,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:35,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2022-12-13 11:09:35,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,903 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 366 flow. Second operand 5 states and 433 transitions. [2022-12-13 11:09:35,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 635 flow [2022-12-13 11:09:35,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 595 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-12-13 11:09:35,906 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 431 flow [2022-12-13 11:09:35,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=431, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2022-12-13 11:09:35,907 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2022-12-13 11:09:35,907 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 431 flow [2022-12-13 11:09:35,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:35,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:35,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 11:09:35,907 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 11:09:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1284469690, now seen corresponding path program 1 times [2022-12-13 11:09:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:35,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081470143] [2022-12-13 11:09:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:35,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:35,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:35,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081470143] [2022-12-13 11:09:35,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081470143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:35,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:35,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:35,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676810870] [2022-12-13 11:09:35,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:35,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:09:35,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:35,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:09:35,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:09:35,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 185 [2022-12-13 11:09:35,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 431 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:35,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:35,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 185 [2022-12-13 11:09:35,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:36,058 INFO L130 PetriNetUnfolder]: 126/245 cut-off events. [2022-12-13 11:09:36,059 INFO L131 PetriNetUnfolder]: For 1101/1101 co-relation queries the response was YES. [2022-12-13 11:09:36,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 245 events. 126/245 cut-off events. For 1101/1101 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 871 event pairs, 8 based on Foata normal form. 6/251 useless extension candidates. Maximal degree in co-relation 1145. Up to 102 conditions per place. [2022-12-13 11:09:36,060 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 49 selfloop transitions, 21 changer transitions 2/72 dead transitions. [2022-12-13 11:09:36,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 700 flow [2022-12-13 11:09:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:09:36,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:09:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 509 transitions. [2022-12-13 11:09:36,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45855855855855854 [2022-12-13 11:09:36,061 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 509 transitions. [2022-12-13 11:09:36,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 509 transitions. [2022-12-13 11:09:36,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:36,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 509 transitions. [2022-12-13 11:09:36,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,064 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,064 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 431 flow. Second operand 6 states and 509 transitions. [2022-12-13 11:09:36,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 700 flow [2022-12-13 11:09:36,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 671 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 11:09:36,068 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 512 flow [2022-12-13 11:09:36,068 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2022-12-13 11:09:36,068 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2022-12-13 11:09:36,069 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 512 flow [2022-12-13 11:09:36,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:36,069 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:36,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:09:36,069 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 11:09:36,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:36,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1277136163, now seen corresponding path program 3 times [2022-12-13 11:09:36,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:36,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686790774] [2022-12-13 11:09:36,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:36,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:36,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:36,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686790774] [2022-12-13 11:09:36,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686790774] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:36,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:36,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:36,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741445147] [2022-12-13 11:09:36,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:36,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:09:36,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:36,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:09:36,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:09:36,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 185 [2022-12-13 11:09:36,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 512 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:36,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 185 [2022-12-13 11:09:36,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:36,246 INFO L130 PetriNetUnfolder]: 116/229 cut-off events. [2022-12-13 11:09:36,246 INFO L131 PetriNetUnfolder]: For 1583/1583 co-relation queries the response was YES. [2022-12-13 11:09:36,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 229 events. 116/229 cut-off events. For 1583/1583 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 796 event pairs, 18 based on Foata normal form. 4/233 useless extension candidates. Maximal degree in co-relation 1171. Up to 94 conditions per place. [2022-12-13 11:09:36,247 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 57 selfloop transitions, 21 changer transitions 3/81 dead transitions. [2022-12-13 11:09:36,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 818 flow [2022-12-13 11:09:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:09:36,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 11:09:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 679 transitions. [2022-12-13 11:09:36,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45878378378378376 [2022-12-13 11:09:36,249 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 679 transitions. [2022-12-13 11:09:36,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 679 transitions. [2022-12-13 11:09:36,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:36,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 679 transitions. [2022-12-13 11:09:36,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,251 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,251 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 512 flow. Second operand 8 states and 679 transitions. [2022-12-13 11:09:36,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 818 flow [2022-12-13 11:09:36,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 779 flow, removed 18 selfloop flow, removed 2 redundant places. [2022-12-13 11:09:36,256 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 536 flow [2022-12-13 11:09:36,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=536, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2022-12-13 11:09:36,257 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2022-12-13 11:09:36,257 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 536 flow [2022-12-13 11:09:36,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:36,257 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:36,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 11:09:36,258 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 11:09:36,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:36,258 INFO L85 PathProgramCache]: Analyzing trace with hash 385953944, now seen corresponding path program 2 times [2022-12-13 11:09:36,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:36,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102255412] [2022-12-13 11:09:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:36,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:36,291 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 11:09:36,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:36,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102255412] [2022-12-13 11:09:36,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102255412] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:36,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253165992] [2022-12-13 11:09:36,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:09:36,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:36,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:36,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:36,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:09:36,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:09:36,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:09:36,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:09:36,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:36,376 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 11:09:36,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:36,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253165992] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:36,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:09:36,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2022-12-13 11:09:36,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339763634] [2022-12-13 11:09:36,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:36,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:09:36,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:36,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:09:36,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:09:36,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 185 [2022-12-13 11:09:36,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:36,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 185 [2022-12-13 11:09:36,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:36,530 INFO L130 PetriNetUnfolder]: 118/233 cut-off events. [2022-12-13 11:09:36,530 INFO L131 PetriNetUnfolder]: For 1529/1529 co-relation queries the response was YES. [2022-12-13 11:09:36,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 233 events. 118/233 cut-off events. For 1529/1529 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 821 event pairs, 8 based on Foata normal form. 6/239 useless extension candidates. Maximal degree in co-relation 1205. Up to 134 conditions per place. [2022-12-13 11:09:36,531 INFO L137 encePairwiseOnDemand]: 178/185 looper letters, 47 selfloop transitions, 23 changer transitions 0/70 dead transitions. [2022-12-13 11:09:36,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 762 flow [2022-12-13 11:09:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:09:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:09:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 430 transitions. [2022-12-13 11:09:36,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2022-12-13 11:09:36,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 430 transitions. [2022-12-13 11:09:36,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 430 transitions. [2022-12-13 11:09:36,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:36,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 430 transitions. [2022-12-13 11:09:36,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,535 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,535 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 536 flow. Second operand 5 states and 430 transitions. [2022-12-13 11:09:36,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 762 flow [2022-12-13 11:09:36,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 700 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-12-13 11:09:36,540 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 580 flow [2022-12-13 11:09:36,540 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=580, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2022-12-13 11:09:36,540 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2022-12-13 11:09:36,541 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 580 flow [2022-12-13 11:09:36,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:36,541 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:36,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:09:36,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 11:09:36,742 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 11:09:36,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:36,742 INFO L85 PathProgramCache]: Analyzing trace with hash -400840755, now seen corresponding path program 4 times [2022-12-13 11:09:36,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:36,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129867114] [2022-12-13 11:09:36,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:36,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:36,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:36,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:36,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129867114] [2022-12-13 11:09:36,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129867114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:36,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:36,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:36,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801137603] [2022-12-13 11:09:36,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:36,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:09:36,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:36,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:09:36,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:09:36,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 185 [2022-12-13 11:09:36,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 580 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:36,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 185 [2022-12-13 11:09:36,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:36,900 INFO L130 PetriNetUnfolder]: 108/213 cut-off events. [2022-12-13 11:09:36,900 INFO L131 PetriNetUnfolder]: For 1762/1762 co-relation queries the response was YES. [2022-12-13 11:09:36,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 213 events. 108/213 cut-off events. For 1762/1762 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 716 event pairs, 8 based on Foata normal form. 4/217 useless extension candidates. Maximal degree in co-relation 1168. Up to 136 conditions per place. [2022-12-13 11:09:36,904 INFO L137 encePairwiseOnDemand]: 180/185 looper letters, 52 selfloop transitions, 14 changer transitions 0/66 dead transitions. [2022-12-13 11:09:36,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 741 flow [2022-12-13 11:09:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:09:36,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:09:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 427 transitions. [2022-12-13 11:09:36,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4616216216216216 [2022-12-13 11:09:36,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 427 transitions. [2022-12-13 11:09:36,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 427 transitions. [2022-12-13 11:09:36,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:36,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 427 transitions. [2022-12-13 11:09:36,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,911 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,911 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 580 flow. Second operand 5 states and 427 transitions. [2022-12-13 11:09:36,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 741 flow [2022-12-13 11:09:36,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 66 transitions, 725 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 11:09:36,919 INFO L231 Difference]: Finished difference. Result has 78 places, 53 transitions, 571 flow [2022-12-13 11:09:36,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=571, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2022-12-13 11:09:36,920 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2022-12-13 11:09:36,920 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 571 flow [2022-12-13 11:09:36,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:36,921 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:36,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 11:09:36,921 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 11:09:36,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:36,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1839973254, now seen corresponding path program 3 times [2022-12-13 11:09:36,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:36,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216466080] [2022-12-13 11:09:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:36,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:36,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:36,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216466080] [2022-12-13 11:09:36,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216466080] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:36,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:36,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:36,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270452749] [2022-12-13 11:09:36,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:36,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:09:36,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:36,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:09:36,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:09:36,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 185 [2022-12-13 11:09:36,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 53 transitions, 571 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:36,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:36,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 185 [2022-12-13 11:09:36,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:37,084 INFO L130 PetriNetUnfolder]: 136/269 cut-off events. [2022-12-13 11:09:37,084 INFO L131 PetriNetUnfolder]: For 2168/2168 co-relation queries the response was YES. [2022-12-13 11:09:37,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 269 events. 136/269 cut-off events. For 2168/2168 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1011 event pairs, 34 based on Foata normal form. 6/275 useless extension candidates. Maximal degree in co-relation 1516. Up to 192 conditions per place. [2022-12-13 11:09:37,088 INFO L137 encePairwiseOnDemand]: 180/185 looper letters, 60 selfloop transitions, 21 changer transitions 0/81 dead transitions. [2022-12-13 11:09:37,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 987 flow [2022-12-13 11:09:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:09:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:09:37,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 429 transitions. [2022-12-13 11:09:37,089 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46378378378378377 [2022-12-13 11:09:37,090 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 429 transitions. [2022-12-13 11:09:37,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 429 transitions. [2022-12-13 11:09:37,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:37,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 429 transitions. [2022-12-13 11:09:37,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,093 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,093 INFO L175 Difference]: Start difference. First operand has 78 places, 53 transitions, 571 flow. Second operand 5 states and 429 transitions. [2022-12-13 11:09:37,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 987 flow [2022-12-13 11:09:37,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 956 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 11:09:37,101 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 764 flow [2022-12-13 11:09:37,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=764, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2022-12-13 11:09:37,102 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2022-12-13 11:09:37,102 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 764 flow [2022-12-13 11:09:37,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:37,102 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:37,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 11:09:37,103 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 11:09:37,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:37,103 INFO L85 PathProgramCache]: Analyzing trace with hash -194910005, now seen corresponding path program 5 times [2022-12-13 11:09:37,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:37,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252590107] [2022-12-13 11:09:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:37,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:37,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:37,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252590107] [2022-12-13 11:09:37,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252590107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:37,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:37,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:37,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320638645] [2022-12-13 11:09:37,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:37,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:09:37,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:37,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:09:37,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:09:37,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 185 [2022-12-13 11:09:37,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 764 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:37,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 185 [2022-12-13 11:09:37,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:37,254 INFO L130 PetriNetUnfolder]: 122/245 cut-off events. [2022-12-13 11:09:37,254 INFO L131 PetriNetUnfolder]: For 2044/2044 co-relation queries the response was YES. [2022-12-13 11:09:37,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 245 events. 122/245 cut-off events. For 2044/2044 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 896 event pairs, 8 based on Foata normal form. 8/253 useless extension candidates. Maximal degree in co-relation 1488. Up to 106 conditions per place. [2022-12-13 11:09:37,256 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 55 selfloop transitions, 20 changer transitions 1/76 dead transitions. [2022-12-13 11:09:37,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 962 flow [2022-12-13 11:09:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:09:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:09:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 508 transitions. [2022-12-13 11:09:37,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45765765765765765 [2022-12-13 11:09:37,258 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 508 transitions. [2022-12-13 11:09:37,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 508 transitions. [2022-12-13 11:09:37,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:37,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 508 transitions. [2022-12-13 11:09:37,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.66666666666667) internal successors, (508), 6 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,261 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,261 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 764 flow. Second operand 6 states and 508 transitions. [2022-12-13 11:09:37,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 76 transitions, 962 flow [2022-12-13 11:09:37,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 76 transitions, 929 flow, removed 11 selfloop flow, removed 1 redundant places. [2022-12-13 11:09:37,267 INFO L231 Difference]: Finished difference. Result has 84 places, 59 transitions, 716 flow [2022-12-13 11:09:37,267 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=716, PETRI_PLACES=84, PETRI_TRANSITIONS=59} [2022-12-13 11:09:37,267 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2022-12-13 11:09:37,267 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 59 transitions, 716 flow [2022-12-13 11:09:37,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:37,268 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:37,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 11:09:37,268 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 11:09:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash 981693370, now seen corresponding path program 4 times [2022-12-13 11:09:37,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:37,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779418115] [2022-12-13 11:09:37,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:37,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:37,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:37,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779418115] [2022-12-13 11:09:37,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779418115] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:37,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:37,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921655405] [2022-12-13 11:09:37,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:37,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:09:37,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:09:37,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:09:37,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 185 [2022-12-13 11:09:37,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 59 transitions, 716 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:37,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 185 [2022-12-13 11:09:37,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:37,433 INFO L130 PetriNetUnfolder]: 118/233 cut-off events. [2022-12-13 11:09:37,434 INFO L131 PetriNetUnfolder]: For 2117/2117 co-relation queries the response was YES. [2022-12-13 11:09:37,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 233 events. 118/233 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 812 event pairs, 18 based on Foata normal form. 2/235 useless extension candidates. Maximal degree in co-relation 1426. Up to 92 conditions per place. [2022-12-13 11:09:37,435 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 57 selfloop transitions, 25 changer transitions 1/83 dead transitions. [2022-12-13 11:09:37,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 83 transitions, 1023 flow [2022-12-13 11:09:37,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:09:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 11:09:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 674 transitions. [2022-12-13 11:09:37,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4554054054054054 [2022-12-13 11:09:37,437 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 674 transitions. [2022-12-13 11:09:37,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 674 transitions. [2022-12-13 11:09:37,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:37,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 674 transitions. [2022-12-13 11:09:37,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.25) internal successors, (674), 8 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,440 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,440 INFO L175 Difference]: Start difference. First operand has 84 places, 59 transitions, 716 flow. Second operand 8 states and 674 transitions. [2022-12-13 11:09:37,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 83 transitions, 1023 flow [2022-12-13 11:09:37,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 83 transitions, 969 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-13 11:09:37,445 INFO L231 Difference]: Finished difference. Result has 85 places, 60 transitions, 745 flow [2022-12-13 11:09:37,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=745, PETRI_PLACES=85, PETRI_TRANSITIONS=60} [2022-12-13 11:09:37,446 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2022-12-13 11:09:37,446 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 60 transitions, 745 flow [2022-12-13 11:09:37,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:37,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:37,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 11:09:37,446 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 11:09:37,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:37,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1763263920, now seen corresponding path program 5 times [2022-12-13 11:09:37,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:37,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894158373] [2022-12-13 11:09:37,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:37,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:37,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:37,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894158373] [2022-12-13 11:09:37,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894158373] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:37,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:37,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:09:37,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469042838] [2022-12-13 11:09:37,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:37,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:09:37,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:37,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:09:37,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:09:37,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 185 [2022-12-13 11:09:37,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 60 transitions, 745 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:37,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 185 [2022-12-13 11:09:37,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:37,591 INFO L130 PetriNetUnfolder]: 113/218 cut-off events. [2022-12-13 11:09:37,591 INFO L131 PetriNetUnfolder]: For 1953/1953 co-relation queries the response was YES. [2022-12-13 11:09:37,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1379 conditions, 218 events. 113/218 cut-off events. For 1953/1953 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 711 event pairs, 22 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 1352. Up to 92 conditions per place. [2022-12-13 11:09:37,593 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 44 selfloop transitions, 21 changer transitions 4/69 dead transitions. [2022-12-13 11:09:37,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 69 transitions, 913 flow [2022-12-13 11:09:37,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:09:37,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:09:37,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 581 transitions. [2022-12-13 11:09:37,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2022-12-13 11:09:37,595 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 581 transitions. [2022-12-13 11:09:37,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 581 transitions. [2022-12-13 11:09:37,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:37,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 581 transitions. [2022-12-13 11:09:37,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,597 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,597 INFO L175 Difference]: Start difference. First operand has 85 places, 60 transitions, 745 flow. Second operand 7 states and 581 transitions. [2022-12-13 11:09:37,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 69 transitions, 913 flow [2022-12-13 11:09:37,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 69 transitions, 870 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-12-13 11:09:37,603 INFO L231 Difference]: Finished difference. Result has 89 places, 57 transitions, 714 flow [2022-12-13 11:09:37,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=714, PETRI_PLACES=89, PETRI_TRANSITIONS=57} [2022-12-13 11:09:37,603 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2022-12-13 11:09:37,603 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 57 transitions, 714 flow [2022-12-13 11:09:37,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:37,604 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:37,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 11:09:37,604 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 11:09:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1503188704, now seen corresponding path program 1 times [2022-12-13 11:09:37,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:37,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393734210] [2022-12-13 11:09:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:37,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:37,709 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 11:09:37,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:37,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393734210] [2022-12-13 11:09:37,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393734210] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:37,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159864657] [2022-12-13 11:09:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:37,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:37,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:37,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:37,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:09:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:37,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:09:37,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:37,863 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 11:09:37,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:38,112 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 11:09:38,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159864657] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:09:38,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:09:38,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 11:09:38,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083036159] [2022-12-13 11:09:38,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:09:38,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 11:09:38,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:38,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 11:09:38,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-12-13 11:09:38,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-12-13 11:09:38,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 57 transitions, 714 flow. Second operand has 18 states, 18 states have (on average 76.94444444444444) internal successors, (1385), 18 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:38,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:38,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-12-13 11:09:38,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:38,607 INFO L130 PetriNetUnfolder]: 116/218 cut-off events. [2022-12-13 11:09:38,607 INFO L131 PetriNetUnfolder]: For 1873/1873 co-relation queries the response was YES. [2022-12-13 11:09:38,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 218 events. 116/218 cut-off events. For 1873/1873 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 711 event pairs, 2 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 1398. Up to 53 conditions per place. [2022-12-13 11:09:38,609 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 41 selfloop transitions, 21 changer transitions 26/88 dead transitions. [2022-12-13 11:09:38,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 88 transitions, 1067 flow [2022-12-13 11:09:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 11:09:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 11:09:38,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 884 transitions. [2022-12-13 11:09:38,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43439803439803437 [2022-12-13 11:09:38,610 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 884 transitions. [2022-12-13 11:09:38,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 884 transitions. [2022-12-13 11:09:38,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:38,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 884 transitions. [2022-12-13 11:09:38,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 80.36363636363636) internal successors, (884), 11 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:38,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:38,613 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:38,613 INFO L175 Difference]: Start difference. First operand has 89 places, 57 transitions, 714 flow. Second operand 11 states and 884 transitions. [2022-12-13 11:09:38,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 88 transitions, 1067 flow [2022-12-13 11:09:38,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 1015 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-13 11:09:38,619 INFO L231 Difference]: Finished difference. Result has 95 places, 46 transitions, 576 flow [2022-12-13 11:09:38,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=576, PETRI_PLACES=95, PETRI_TRANSITIONS=46} [2022-12-13 11:09:38,619 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2022-12-13 11:09:38,619 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 46 transitions, 576 flow [2022-12-13 11:09:38,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 76.94444444444444) internal successors, (1385), 18 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:38,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:38,620 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:38,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:09:38,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:38,820 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 11:09:38,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:38,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1304366556, now seen corresponding path program 2 times [2022-12-13 11:09:38,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:38,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697956929] [2022-12-13 11:09:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:38,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:39,015 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 11:09:39,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:39,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697956929] [2022-12-13 11:09:39,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697956929] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:39,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816223506] [2022-12-13 11:09:39,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:09:39,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:39,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:39,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:39,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:09:39,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:09:39,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:09:39,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:09:39,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:39,154 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 11:09:39,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:39,363 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 11:09:39,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816223506] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:09:39,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:09:39,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 11:09:39,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080557907] [2022-12-13 11:09:39,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:09:39,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 11:09:39,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 11:09:39,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-12-13 11:09:39,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-12-13 11:09:39,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 46 transitions, 576 flow. Second operand has 18 states, 18 states have (on average 76.66666666666667) internal successors, (1380), 18 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:39,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:39,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-12-13 11:09:39,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:39,749 INFO L130 PetriNetUnfolder]: 90/178 cut-off events. [2022-12-13 11:09:39,749 INFO L131 PetriNetUnfolder]: For 1585/1585 co-relation queries the response was YES. [2022-12-13 11:09:39,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 178 events. 90/178 cut-off events. For 1585/1585 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 534 event pairs, 2 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 1121. Up to 55 conditions per place. [2022-12-13 11:09:39,751 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 45 selfloop transitions, 26 changer transitions 9/80 dead transitions. [2022-12-13 11:09:39,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 80 transitions, 963 flow [2022-12-13 11:09:39,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 11:09:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 11:09:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 883 transitions. [2022-12-13 11:09:39,753 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4339066339066339 [2022-12-13 11:09:39,754 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 883 transitions. [2022-12-13 11:09:39,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 883 transitions. [2022-12-13 11:09:39,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:39,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 883 transitions. [2022-12-13 11:09:39,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 80.27272727272727) internal successors, (883), 11 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:39,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:39,758 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:39,759 INFO L175 Difference]: Start difference. First operand has 95 places, 46 transitions, 576 flow. Second operand 11 states and 883 transitions. [2022-12-13 11:09:39,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 80 transitions, 963 flow [2022-12-13 11:09:39,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 838 flow, removed 17 selfloop flow, removed 13 redundant places. [2022-12-13 11:09:39,766 INFO L231 Difference]: Finished difference. Result has 85 places, 49 transitions, 588 flow [2022-12-13 11:09:39,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=85, PETRI_TRANSITIONS=49} [2022-12-13 11:09:39,766 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2022-12-13 11:09:39,767 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 49 transitions, 588 flow [2022-12-13 11:09:39,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 76.66666666666667) internal successors, (1380), 18 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:39,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:39,767 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:39,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:09:39,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 11:09:39,968 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 11:09:39,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:39,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1330284726, now seen corresponding path program 3 times [2022-12-13 11:09:39,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:39,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938590142] [2022-12-13 11:09:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:39,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:40,161 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 11:09:40,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:40,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938590142] [2022-12-13 11:09:40,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938590142] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:40,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126033857] [2022-12-13 11:09:40,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:09:40,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:40,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:40,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:40,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:09:40,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 11:09:40,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:09:40,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:09:40,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:40,312 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 11:09:40,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:40,490 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 11:09:40,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126033857] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:09:40,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:09:40,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 11:09:40,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308492114] [2022-12-13 11:09:40,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:09:40,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 11:09:40,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:40,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 11:09:40,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-12-13 11:09:40,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-12-13 11:09:40,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 49 transitions, 588 flow. Second operand has 18 states, 18 states have (on average 76.44444444444444) internal successors, (1376), 18 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:40,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:40,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-12-13 11:09:40,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:40,848 INFO L130 PetriNetUnfolder]: 84/173 cut-off events. [2022-12-13 11:09:40,848 INFO L131 PetriNetUnfolder]: For 1151/1151 co-relation queries the response was YES. [2022-12-13 11:09:40,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 173 events. 84/173 cut-off events. For 1151/1151 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 527 event pairs, 2 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 1034. Up to 55 conditions per place. [2022-12-13 11:09:40,850 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 33 selfloop transitions, 15 changer transitions 26/74 dead transitions. [2022-12-13 11:09:40,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 74 transitions, 865 flow [2022-12-13 11:09:40,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 11:09:40,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 11:09:40,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 877 transitions. [2022-12-13 11:09:40,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43095823095823094 [2022-12-13 11:09:40,852 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 877 transitions. [2022-12-13 11:09:40,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 877 transitions. [2022-12-13 11:09:40,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:40,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 877 transitions. [2022-12-13 11:09:40,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 79.72727272727273) internal successors, (877), 11 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:40,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:40,857 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:40,857 INFO L175 Difference]: Start difference. First operand has 85 places, 49 transitions, 588 flow. Second operand 11 states and 877 transitions. [2022-12-13 11:09:40,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 74 transitions, 865 flow [2022-12-13 11:09:40,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 74 transitions, 790 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-12-13 11:09:40,863 INFO L231 Difference]: Finished difference. Result has 84 places, 37 transitions, 391 flow [2022-12-13 11:09:40,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=391, PETRI_PLACES=84, PETRI_TRANSITIONS=37} [2022-12-13 11:09:40,864 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2022-12-13 11:09:40,864 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 37 transitions, 391 flow [2022-12-13 11:09:40,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 76.44444444444444) internal successors, (1376), 18 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:40,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:40,865 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:40,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:09:41,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:41,067 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 11:09:41,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1068636090, now seen corresponding path program 4 times [2022-12-13 11:09:41,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:41,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236105469] [2022-12-13 11:09:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:41,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:41,275 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 11:09:41,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:41,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236105469] [2022-12-13 11:09:41,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236105469] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:41,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250725104] [2022-12-13 11:09:41,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:09:41,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:41,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:41,277 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:41,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:09:41,328 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:09:41,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:09:41,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:09:41,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:41,377 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 11:09:41,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:41,573 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 11:09:41,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250725104] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:09:41,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:09:41,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-13 11:09:41,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574737463] [2022-12-13 11:09:41,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:09:41,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 11:09:41,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:41,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 11:09:41,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:09:41,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-12-13 11:09:41,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 37 transitions, 391 flow. Second operand has 16 states, 16 states have (on average 76.75) internal successors, (1228), 16 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:41,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:41,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-12-13 11:09:41,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:42,411 INFO L130 PetriNetUnfolder]: 81/184 cut-off events. [2022-12-13 11:09:42,411 INFO L131 PetriNetUnfolder]: For 1110/1110 co-relation queries the response was YES. [2022-12-13 11:09:42,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 184 events. 81/184 cut-off events. For 1110/1110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 637 event pairs, 3 based on Foata normal form. 4/188 useless extension candidates. Maximal degree in co-relation 1005. Up to 39 conditions per place. [2022-12-13 11:09:42,414 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 41 selfloop transitions, 29 changer transitions 25/95 dead transitions. [2022-12-13 11:09:42,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 95 transitions, 963 flow [2022-12-13 11:09:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 11:09:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 11:09:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1587 transitions. [2022-12-13 11:09:42,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4289189189189189 [2022-12-13 11:09:42,416 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1587 transitions. [2022-12-13 11:09:42,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1587 transitions. [2022-12-13 11:09:42,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:42,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1587 transitions. [2022-12-13 11:09:42,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 79.35) internal successors, (1587), 20 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:42,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 185.0) internal successors, (3885), 21 states have internal predecessors, (3885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:42,420 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 185.0) internal successors, (3885), 21 states have internal predecessors, (3885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:42,420 INFO L175 Difference]: Start difference. First operand has 84 places, 37 transitions, 391 flow. Second operand 20 states and 1587 transitions. [2022-12-13 11:09:42,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 95 transitions, 963 flow [2022-12-13 11:09:42,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 95 transitions, 847 flow, removed 9 selfloop flow, removed 12 redundant places. [2022-12-13 11:09:42,424 INFO L231 Difference]: Finished difference. Result has 91 places, 48 transitions, 541 flow [2022-12-13 11:09:42,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=541, PETRI_PLACES=91, PETRI_TRANSITIONS=48} [2022-12-13 11:09:42,424 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2022-12-13 11:09:42,425 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 48 transitions, 541 flow [2022-12-13 11:09:42,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 76.75) internal successors, (1228), 16 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:42,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:42,425 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:42,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:09:42,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:42,627 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 11:09:42,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:42,628 INFO L85 PathProgramCache]: Analyzing trace with hash 236274376, now seen corresponding path program 5 times [2022-12-13 11:09:42,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:42,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485378642] [2022-12-13 11:09:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:42,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:42,780 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 11:09:42,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:42,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485378642] [2022-12-13 11:09:42,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485378642] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:42,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281405705] [2022-12-13 11:09:42,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:09:42,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:42,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:42,781 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:42,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:09:42,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:09:42,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:09:42,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 11:09:42,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:42,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:09:42,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:09:42,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281405705] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:42,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:09:42,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-12-13 11:09:42,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171688599] [2022-12-13 11:09:42,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:42,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:09:42,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:42,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:09:42,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:09:42,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 185 [2022-12-13 11:09:42,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 48 transitions, 541 flow. Second operand has 7 states, 7 states have (on average 81.14285714285714) internal successors, (568), 7 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:42,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:42,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 185 [2022-12-13 11:09:42,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:42,972 INFO L130 PetriNetUnfolder]: 66/137 cut-off events. [2022-12-13 11:09:42,972 INFO L131 PetriNetUnfolder]: For 826/826 co-relation queries the response was YES. [2022-12-13 11:09:42,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 137 events. 66/137 cut-off events. For 826/826 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 371 event pairs, 6 based on Foata normal form. 2/139 useless extension candidates. Maximal degree in co-relation 825. Up to 38 conditions per place. [2022-12-13 11:09:42,973 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 26 selfloop transitions, 10 changer transitions 22/58 dead transitions. [2022-12-13 11:09:42,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 58 transitions, 705 flow [2022-12-13 11:09:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:09:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:09:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2022-12-13 11:09:42,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2022-12-13 11:09:42,975 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2022-12-13 11:09:42,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2022-12-13 11:09:42,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:42,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2022-12-13 11:09:42,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:42,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:42,977 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:42,978 INFO L175 Difference]: Start difference. First operand has 91 places, 48 transitions, 541 flow. Second operand 7 states and 585 transitions. [2022-12-13 11:09:42,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 58 transitions, 705 flow [2022-12-13 11:09:42,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 58 transitions, 575 flow, removed 35 selfloop flow, removed 12 redundant places. [2022-12-13 11:09:42,981 INFO L231 Difference]: Finished difference. Result has 81 places, 33 transitions, 300 flow [2022-12-13 11:09:42,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=81, PETRI_TRANSITIONS=33} [2022-12-13 11:09:42,982 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2022-12-13 11:09:42,982 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 33 transitions, 300 flow [2022-12-13 11:09:42,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.14285714285714) internal successors, (568), 7 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:42,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:42,983 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:42,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 11:09:43,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 11:09:43,184 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 11:09:43,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:43,185 INFO L85 PathProgramCache]: Analyzing trace with hash -737603258, now seen corresponding path program 6 times [2022-12-13 11:09:43,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:43,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93779129] [2022-12-13 11:09:43,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:43,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:43,377 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 11:09:43,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:43,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93779129] [2022-12-13 11:09:43,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93779129] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:43,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747137473] [2022-12-13 11:09:43,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:09:43,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:43,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:43,379 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:43,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:09:43,436 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 11:09:43,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:09:43,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:09:43,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:43,494 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 11:09:43,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:43,697 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 11:09:43,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747137473] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:09:43,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:09:43,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-13 11:09:43,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881370606] [2022-12-13 11:09:43,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:09:43,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 11:09:43,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:43,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 11:09:43,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:09:43,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-12-13 11:09:43,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 33 transitions, 300 flow. Second operand has 16 states, 16 states have (on average 76.6875) internal successors, (1227), 16 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:43,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:43,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-12-13 11:09:43,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:44,143 INFO L130 PetriNetUnfolder]: 40/92 cut-off events. [2022-12-13 11:09:44,143 INFO L131 PetriNetUnfolder]: For 381/381 co-relation queries the response was YES. [2022-12-13 11:09:44,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 92 events. 40/92 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 208 event pairs, 3 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 474. Up to 20 conditions per place. [2022-12-13 11:09:44,144 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 24 selfloop transitions, 16 changer transitions 12/52 dead transitions. [2022-12-13 11:09:44,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 52 transitions, 469 flow [2022-12-13 11:09:44,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:09:44,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:09:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1099 transitions. [2022-12-13 11:09:44,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2022-12-13 11:09:44,145 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1099 transitions. [2022-12-13 11:09:44,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1099 transitions. [2022-12-13 11:09:44,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:44,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1099 transitions. [2022-12-13 11:09:44,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 78.5) internal successors, (1099), 14 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:44,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 185.0) internal successors, (2775), 15 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:44,148 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 185.0) internal successors, (2775), 15 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:44,148 INFO L175 Difference]: Start difference. First operand has 81 places, 33 transitions, 300 flow. Second operand 14 states and 1099 transitions. [2022-12-13 11:09:44,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 52 transitions, 469 flow [2022-12-13 11:09:44,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 52 transitions, 417 flow, removed 5 selfloop flow, removed 12 redundant places. [2022-12-13 11:09:44,150 INFO L231 Difference]: Finished difference. Result has 72 places, 29 transitions, 246 flow [2022-12-13 11:09:44,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=246, PETRI_PLACES=72, PETRI_TRANSITIONS=29} [2022-12-13 11:09:44,150 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2022-12-13 11:09:44,150 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 29 transitions, 246 flow [2022-12-13 11:09:44,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 76.6875) internal successors, (1227), 16 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:44,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:44,150 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:44,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 11:09:44,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 11:09:44,352 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 11:09:44,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:44,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1175418628, now seen corresponding path program 7 times [2022-12-13 11:09:44,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:44,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610296869] [2022-12-13 11:09:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:44,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:44,501 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 11:09:44,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:44,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610296869] [2022-12-13 11:09:44,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610296869] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:44,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323438354] [2022-12-13 11:09:44,501 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:09:44,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:44,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:44,502 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:44,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:09:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:44,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:09:44,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:44,625 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 11:09:44,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:44,806 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 11:09:44,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323438354] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:09:44,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:09:44,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 11:09:44,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976663471] [2022-12-13 11:09:44,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:09:44,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 11:09:44,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:44,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 11:09:44,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-12-13 11:09:44,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-12-13 11:09:44,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 29 transitions, 246 flow. Second operand has 18 states, 18 states have (on average 76.5) internal successors, (1377), 18 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:44,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:44,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-12-13 11:09:44,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:45,091 INFO L130 PetriNetUnfolder]: 36/84 cut-off events. [2022-12-13 11:09:45,092 INFO L131 PetriNetUnfolder]: For 355/355 co-relation queries the response was YES. [2022-12-13 11:09:45,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 84 events. 36/84 cut-off events. For 355/355 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 180 event pairs, 3 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 414. Up to 23 conditions per place. [2022-12-13 11:09:45,092 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 22 selfloop transitions, 13 changer transitions 9/44 dead transitions. [2022-12-13 11:09:45,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 44 transitions, 391 flow [2022-12-13 11:09:45,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 11:09:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 11:09:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 862 transitions. [2022-12-13 11:09:45,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42358722358722356 [2022-12-13 11:09:45,093 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 862 transitions. [2022-12-13 11:09:45,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 862 transitions. [2022-12-13 11:09:45,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:45,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 862 transitions. [2022-12-13 11:09:45,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 78.36363636363636) internal successors, (862), 11 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:45,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:45,095 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:45,096 INFO L175 Difference]: Start difference. First operand has 72 places, 29 transitions, 246 flow. Second operand 11 states and 862 transitions. [2022-12-13 11:09:45,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 44 transitions, 391 flow [2022-12-13 11:09:45,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 44 transitions, 352 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-12-13 11:09:45,097 INFO L231 Difference]: Finished difference. Result has 66 places, 28 transitions, 228 flow [2022-12-13 11:09:45,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=228, PETRI_PLACES=66, PETRI_TRANSITIONS=28} [2022-12-13 11:09:45,097 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2022-12-13 11:09:45,097 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 28 transitions, 228 flow [2022-12-13 11:09:45,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 76.5) internal successors, (1377), 18 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:45,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:45,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:45,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 11:09:45,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 11:09:45,298 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 11:09:45,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:45,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1554708278, now seen corresponding path program 8 times [2022-12-13 11:09:45,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:45,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907755677] [2022-12-13 11:09:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:45,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:45,393 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 11:09:45,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:45,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907755677] [2022-12-13 11:09:45,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907755677] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:45,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094133427] [2022-12-13 11:09:45,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:09:45,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:45,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:45,395 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:45,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:09:45,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:09:45,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:09:45,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:09:45,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:45,521 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 11:09:45,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:45,670 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 11:09:45,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094133427] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:09:45,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:09:45,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 11:09:45,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990175616] [2022-12-13 11:09:45,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:09:45,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 11:09:45,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:45,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 11:09:45,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-12-13 11:09:45,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-12-13 11:09:45,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 28 transitions, 228 flow. Second operand has 18 states, 18 states have (on average 76.44444444444444) internal successors, (1376), 18 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:45,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:45,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-12-13 11:09:45,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:45,977 INFO L130 PetriNetUnfolder]: 32/70 cut-off events. [2022-12-13 11:09:45,977 INFO L131 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2022-12-13 11:09:45,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 70 events. 32/70 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 136 event pairs, 3 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 347. Up to 23 conditions per place. [2022-12-13 11:09:45,977 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2022-12-13 11:09:45,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 34 transitions, 318 flow [2022-12-13 11:09:45,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:09:45,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 11:09:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 702 transitions. [2022-12-13 11:09:45,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2022-12-13 11:09:45,978 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 702 transitions. [2022-12-13 11:09:45,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 702 transitions. [2022-12-13 11:09:45,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:45,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 702 transitions. [2022-12-13 11:09:45,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:45,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:45,980 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:45,980 INFO L175 Difference]: Start difference. First operand has 66 places, 28 transitions, 228 flow. Second operand 9 states and 702 transitions. [2022-12-13 11:09:45,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 34 transitions, 318 flow [2022-12-13 11:09:45,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 34 transitions, 295 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-12-13 11:09:45,981 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2022-12-13 11:09:45,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2022-12-13 11:09:45,982 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2022-12-13 11:09:45,982 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2022-12-13 11:09:45,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 76.44444444444444) internal successors, (1376), 18 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:45,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-12-13 11:09:45,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-12-13 11:09:45,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-13 11:09:45,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-13 11:09:45,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-12-13 11:09:45,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-12-13 11:09:45,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-13 11:09:45,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-13 11:09:45,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2022-12-13 11:09:45,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-12-13 11:09:45,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-13 11:09:45,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-13 11:09:45,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 11:09:46,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 11:09:46,186 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 5, 5, 1, 1, 1, 1, 1] [2022-12-13 11:09:46,194 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 11:09:46,195 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:09:46,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:09:46 BasicIcfg [2022-12-13 11:09:46,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:09:46,204 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:09:46,204 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:09:46,204 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:09:46,205 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:09:30" (3/4) ... [2022-12-13 11:09:46,212 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 11:09:46,225 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 11:09:46,225 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 11:09:46,229 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-13 11:09:46,230 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 11:09:46,230 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 11:09:46,230 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 11:09:46,253 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 11:09:46,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:09:46,253 INFO L158 Benchmark]: Toolchain (without parser) took 16402.61ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 107.9MB in the beginning and 97.5MB in the end (delta: 10.4MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-12-13 11:09:46,254 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 76.3MB in the end (delta: 30.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:09:46,254 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.14ms. Allocated memory is still 142.6MB. Free memory was 107.9MB in the beginning and 96.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 11:09:46,254 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.70ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 95.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:09:46,254 INFO L158 Benchmark]: Boogie Preprocessor took 16.97ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 93.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:09:46,254 INFO L158 Benchmark]: RCFGBuilder took 305.16ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 80.5MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 11:09:46,254 INFO L158 Benchmark]: TraceAbstraction took 15776.50ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 80.0MB in the beginning and 100.5MB in the end (delta: -20.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 11:09:46,255 INFO L158 Benchmark]: Witness Printer took 49.39ms. Allocated memory is still 172.0MB. Free memory was 100.5MB in the beginning and 97.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:09:46,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 76.3MB in the end (delta: 30.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 220.14ms. Allocated memory is still 142.6MB. Free memory was 107.9MB in the beginning and 96.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.70ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 95.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.97ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 93.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 305.16ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 80.5MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15776.50ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 80.0MB in the beginning and 100.5MB in the end (delta: -20.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 49.39ms. Allocated memory is still 172.0MB. Free memory was 100.5MB in the beginning and 97.5MB in the end (delta: 3.0MB). 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: 2.1s, 93 PlacesBefore, 29 PlacesAfterwards, 92 TransitionsBefore, 24 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 6 FixpointIterations, 49 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 86 TotalNumberOfCompositions, 780 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 725, independent: 713, independent conditional: 0, independent unconditional: 713, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 385, independent: 383, independent conditional: 0, independent unconditional: 383, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 725, independent: 330, independent conditional: 0, independent unconditional: 330, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 385, unknown conditional: 0, unknown unconditional: 385] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, 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: 79]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: 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: 15.6s, OverallIterations: 29, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2529 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1962 mSDsluCounter, 1670 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1513 mSDsCounter, 301 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8205 IncrementalHoareTripleChecker+Invalid, 8506 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 301 mSolverCounterUnsat, 157 mSDtfsCounter, 8205 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 485 GetRequests, 187 SyntacticMatches, 23 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=764occurred in iteration=18, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 489 NumberOfCodeBlocks, 489 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 562 ConstructedInterpolants, 0 QuantifiedInterpolants, 3755 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1194 ConjunctsInSsa, 147 ConjunctsInUnsatCore, 46 InterpolantComputations, 22 PerfectInterpolantSequences, 12/58 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 11:09:46,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67455bcd-afa1-49d8-a96a-ada5c4e51f2e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE