./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-1.i --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_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/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_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/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_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- 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 18:45:10,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:45:10,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:45:10,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:45:10,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:45:10,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:45:10,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:45:10,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:45:10,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:45:10,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:45:10,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:45:10,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:45:10,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:45:10,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:45:10,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:45:10,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:45:10,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:45:10,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:45:10,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:45:10,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:45:10,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:45:10,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:45:10,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:45:10,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:45:10,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:45:10,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:45:10,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:45:10,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:45:10,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:45:10,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:45:10,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:45:10,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:45:10,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:45:10,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:45:10,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:45:10,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:45:10,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:45:10,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:45:10,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:45:10,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:45:10,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:45:10,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 18:45:10,103 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:45:10,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:45:10,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:45:10,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:45:10,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:45:10,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:45:10,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:45:10,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:45:10,105 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:45:10,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:45:10,105 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:45:10,106 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:45:10,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:45:10,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:45:10,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:45:10,106 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 18:45:10,106 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 18:45:10,106 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 18:45:10,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:45:10,107 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 18:45:10,107 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:45:10,107 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:45:10,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:45:10,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:45:10,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:45:10,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:45:10,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:45:10,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:45:10,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:45:10,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:45:10,108 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:45:10,108 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:45:10,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:45:10,108 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:45:10,108 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_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2022-12-13 18:45:10,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:45:10,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:45:10,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:45:10,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:45:10,304 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:45:10,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/triangular-1.i [2022-12-13 18:45:12,878 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:45:13,067 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:45:13,067 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/sv-benchmarks/c/pthread/triangular-1.i [2022-12-13 18:45:13,078 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/data/dd519474b/60b164cdb004469386e8e313f7345509/FLAG7584068fe [2022-12-13 18:45:13,471 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/data/dd519474b/60b164cdb004469386e8e313f7345509 [2022-12-13 18:45:13,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:45:13,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:45:13,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:45:13,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:45:13,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:45:13,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158381b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13, skipping insertion in model container [2022-12-13 18:45:13,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:45:13,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:45:13,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:45:13,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:45:13,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:45:13,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:45:13,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:45:13,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:45:13,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:45:13,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:45:13,766 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_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2022-12-13 18:45:13,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:45:13,777 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:45:13,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:45:13,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:45:13,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:45:13,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:45:13,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:45:13,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:45:13,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:45:13,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:45:13,817 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_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2022-12-13 18:45:13,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:45:13,840 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:45:13,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13 WrapperNode [2022-12-13 18:45:13,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:45:13,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:45:13,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:45:13,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:45:13,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,876 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-13 18:45:13,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:45:13,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:45:13,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:45:13,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:45:13,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,897 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:45:13,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:45:13,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:45:13,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:45:13,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13" (1/1) ... [2022-12-13 18:45:13,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:45:13,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:13,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:45:13,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:45:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 18:45:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 18:45:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 18:45:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 18:45:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:45:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:45:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:45:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:45:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:45:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:45:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:45:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:45:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:45:13,965 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 18:45:14,066 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:45:14,068 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:45:14,226 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:45:14,232 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:45:14,232 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 18:45:14,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:45:14 BoogieIcfgContainer [2022-12-13 18:45:14,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:45:14,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:45:14,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:45:14,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:45:14,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:45:13" (1/3) ... [2022-12-13 18:45:14,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cb8e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:45:14, skipping insertion in model container [2022-12-13 18:45:14,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:13" (2/3) ... [2022-12-13 18:45:14,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cb8e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:45:14, skipping insertion in model container [2022-12-13 18:45:14,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:45:14" (3/3) ... [2022-12-13 18:45:14,243 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2022-12-13 18:45:14,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:45:14,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 18:45:14,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:45:14,313 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:45:14,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 166 flow [2022-12-13 18:45:14,389 INFO L130 PetriNetUnfolder]: 5/76 cut-off events. [2022-12-13 18:45:14,389 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:45:14,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 5/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 18:45:14,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 78 transitions, 166 flow [2022-12-13 18:45:14,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 76 transitions, 158 flow [2022-12-13 18:45:14,402 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:45:14,410 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 76 transitions, 158 flow [2022-12-13 18:45:14,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 76 transitions, 158 flow [2022-12-13 18:45:14,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 76 transitions, 158 flow [2022-12-13 18:45:14,432 INFO L130 PetriNetUnfolder]: 5/76 cut-off events. [2022-12-13 18:45:14,433 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:45:14,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 5/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 18:45:14,435 INFO L119 LiptonReduction]: Number of co-enabled transitions 1298 [2022-12-13 18:45:16,188 INFO L134 LiptonReduction]: Checked pairs total: 1200 [2022-12-13 18:45:16,188 INFO L136 LiptonReduction]: Total number of compositions: 74 [2022-12-13 18:45:16,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:45:16,205 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;@4d6d55a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:45:16,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-13 18:45:16,207 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 18:45:16,207 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:45:16,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:16,208 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:45:16,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:16,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:16,212 INFO L85 PathProgramCache]: Analyzing trace with hash 305, now seen corresponding path program 1 times [2022-12-13 18:45:16,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:16,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856231901] [2022-12-13 18:45:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:16,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:16,291 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 18:45:16,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:16,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856231901] [2022-12-13 18:45:16,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856231901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:16,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:16,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:45:16,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295667049] [2022-12-13 18:45:16,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:16,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:45:16,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:45:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:45:16,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 152 [2022-12-13 18:45:16,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 42 flow. Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:16,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 152 [2022-12-13 18:45:16,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:16,362 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2022-12-13 18:45:16,362 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:45:16,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 385 event pairs, 60 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 306. Up to 153 conditions per place. [2022-12-13 18:45:16,364 INFO L137 encePairwiseOnDemand]: 150/152 looper letters, 15 selfloop transitions, 0 changer transitions 1/16 dead transitions. [2022-12-13 18:45:16,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 16 transitions, 70 flow [2022-12-13 18:45:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:45:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:45:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 162 transitions. [2022-12-13 18:45:16,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5328947368421053 [2022-12-13 18:45:16,375 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 162 transitions. [2022-12-13 18:45:16,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 162 transitions. [2022-12-13 18:45:16,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:16,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 162 transitions. [2022-12-13 18:45:16,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,385 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,387 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 42 flow. Second operand 2 states and 162 transitions. [2022-12-13 18:45:16,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 16 transitions, 70 flow [2022-12-13 18:45:16,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 68 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:45:16,391 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 34 flow [2022-12-13 18:45:16,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2022-12-13 18:45:16,396 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2022-12-13 18:45:16,396 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 34 flow [2022-12-13 18:45:16,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:16,397 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 18:45:16,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:45:16,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:16,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash 298668, now seen corresponding path program 1 times [2022-12-13 18:45:16,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:16,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934097887] [2022-12-13 18:45:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:16,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:16,504 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 18:45:16,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:16,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934097887] [2022-12-13 18:45:16,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934097887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:16,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:16,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:45:16,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758176042] [2022-12-13 18:45:16,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:16,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:45:16,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:16,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:45:16,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:45:16,533 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 18:45:16,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:16,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 18:45:16,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:16,570 INFO L130 PetriNetUnfolder]: 73/119 cut-off events. [2022-12-13 18:45:16,570 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:45:16,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 119 events. 73/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 281 event pairs, 34 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 246. Up to 92 conditions per place. [2022-12-13 18:45:16,571 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2022-12-13 18:45:16,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 84 flow [2022-12-13 18:45:16,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:45:16,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:45:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2022-12-13 18:45:16,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2022-12-13 18:45:16,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2022-12-13 18:45:16,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2022-12-13 18:45:16,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:16,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2022-12-13 18:45:16,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,578 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 34 flow. Second operand 3 states and 216 transitions. [2022-12-13 18:45:16,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 84 flow [2022-12-13 18:45:16,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:45:16,579 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2022-12-13 18:45:16,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2022-12-13 18:45:16,580 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2022-12-13 18:45:16,580 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2022-12-13 18:45:16,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:16,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 18:45:16,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:45:16,581 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:16,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:16,581 INFO L85 PathProgramCache]: Analyzing trace with hash 298669, now seen corresponding path program 1 times [2022-12-13 18:45:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:16,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118580338] [2022-12-13 18:45:16,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:16,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:16,692 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 18:45:16,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:16,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118580338] [2022-12-13 18:45:16,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118580338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:16,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:16,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:45:16,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119719088] [2022-12-13 18:45:16,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:16,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:45:16,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:16,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:45:16,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:45:16,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 152 [2022-12-13 18:45:16,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:16,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 152 [2022-12-13 18:45:16,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:16,748 INFO L130 PetriNetUnfolder]: 70/113 cut-off events. [2022-12-13 18:45:16,748 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 18:45:16,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 113 events. 70/113 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 257 event pairs, 32 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 244. Up to 86 conditions per place. [2022-12-13 18:45:16,749 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2022-12-13 18:45:16,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 84 flow [2022-12-13 18:45:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:45:16,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:45:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2022-12-13 18:45:16,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2022-12-13 18:45:16,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2022-12-13 18:45:16,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2022-12-13 18:45:16,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:16,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2022-12-13 18:45:16,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,752 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 3 states and 224 transitions. [2022-12-13 18:45:16,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 84 flow [2022-12-13 18:45:16,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:45:16,753 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 34 flow [2022-12-13 18:45:16,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2022-12-13 18:45:16,753 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, -4 predicate places. [2022-12-13 18:45:16,753 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 34 flow [2022-12-13 18:45:16,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:16,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:45:16,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:45:16,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:16,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:16,754 INFO L85 PathProgramCache]: Analyzing trace with hash 307853827, now seen corresponding path program 1 times [2022-12-13 18:45:16,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:16,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403636266] [2022-12-13 18:45:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:16,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:16,890 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 18:45:16,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:16,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403636266] [2022-12-13 18:45:16,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403636266] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:16,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:16,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:45:16,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362942540] [2022-12-13 18:45:16,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:16,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:45:16,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:16,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:45:16,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:45:16,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 152 [2022-12-13 18:45:16,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 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 18:45:16,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:16,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 152 [2022-12-13 18:45:16,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:16,944 INFO L130 PetriNetUnfolder]: 52/86 cut-off events. [2022-12-13 18:45:16,945 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 18:45:16,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 86 events. 52/86 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 167 event pairs, 32 based on Foata normal form. 9/75 useless extension candidates. Maximal degree in co-relation 181. Up to 86 conditions per place. [2022-12-13 18:45:16,945 INFO L137 encePairwiseOnDemand]: 150/152 looper letters, 11 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2022-12-13 18:45:16,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 54 flow [2022-12-13 18:45:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:45:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:45:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2022-12-13 18:45:16,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46271929824561403 [2022-12-13 18:45:16,947 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2022-12-13 18:45:16,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2022-12-13 18:45:16,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:16,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2022-12-13 18:45:16,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:16,949 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 34 flow. Second operand 3 states and 211 transitions. [2022-12-13 18:45:16,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 54 flow [2022-12-13 18:45:16,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 53 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:45:16,950 INFO L231 Difference]: Finished difference. Result has 19 places, 12 transitions, 31 flow [2022-12-13 18:45:16,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=31, PETRI_PLACES=19, PETRI_TRANSITIONS=12} [2022-12-13 18:45:16,950 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, -4 predicate places. [2022-12-13 18:45:16,951 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 12 transitions, 31 flow [2022-12-13 18:45:16,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 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 18:45:16,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:16,951 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:45:16,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:45:16,951 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash 307853801, now seen corresponding path program 1 times [2022-12-13 18:45:16,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:16,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649064692] [2022-12-13 18:45:16,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:16,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:17,016 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 18:45:17,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:17,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649064692] [2022-12-13 18:45:17,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649064692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:17,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:17,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:45:17,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260331072] [2022-12-13 18:45:17,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:17,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:45:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:45:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:45:17,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 152 [2022-12-13 18:45:17,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 31 flow. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:17,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 152 [2022-12-13 18:45:17,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:17,078 INFO L130 PetriNetUnfolder]: 64/107 cut-off events. [2022-12-13 18:45:17,078 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:45:17,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 107 events. 64/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 11 based on Foata normal form. 9/87 useless extension candidates. Maximal degree in co-relation 224. Up to 55 conditions per place. [2022-12-13 18:45:17,079 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 18 selfloop transitions, 4 changer transitions 2/24 dead transitions. [2022-12-13 18:45:17,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 103 flow [2022-12-13 18:45:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:45:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:45:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2022-12-13 18:45:17,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4753289473684211 [2022-12-13 18:45:17,081 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 289 transitions. [2022-12-13 18:45:17,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 289 transitions. [2022-12-13 18:45:17,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:17,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 289 transitions. [2022-12-13 18:45:17,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,084 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,084 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 31 flow. Second operand 4 states and 289 transitions. [2022-12-13 18:45:17,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 103 flow [2022-12-13 18:45:17,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:45:17,085 INFO L231 Difference]: Finished difference. Result has 23 places, 15 transitions, 55 flow [2022-12-13 18:45:17,085 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=55, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2022-12-13 18:45:17,086 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2022-12-13 18:45:17,086 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 55 flow [2022-12-13 18:45:17,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:17,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:17,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:45:17,087 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:17,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:17,087 INFO L85 PathProgramCache]: Analyzing trace with hash -505601409, now seen corresponding path program 1 times [2022-12-13 18:45:17,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:17,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577046707] [2022-12-13 18:45:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:17,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:17,153 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 18:45:17,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:17,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577046707] [2022-12-13 18:45:17,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577046707] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:17,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:17,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:45:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706850837] [2022-12-13 18:45:17,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:17,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:45:17,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:45:17,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:45:17,167 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 18:45:17,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:17,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 18:45:17,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:17,236 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2022-12-13 18:45:17,236 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-12-13 18:45:17,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 217 events. 126/217 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 662 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 544. Up to 89 conditions per place. [2022-12-13 18:45:17,237 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2022-12-13 18:45:17,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 42 transitions, 217 flow [2022-12-13 18:45:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:45:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:45:17,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2022-12-13 18:45:17,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4692982456140351 [2022-12-13 18:45:17,240 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2022-12-13 18:45:17,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2022-12-13 18:45:17,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:17,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2022-12-13 18:45:17,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,242 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,242 INFO L175 Difference]: Start difference. First operand has 23 places, 15 transitions, 55 flow. Second operand 6 states and 428 transitions. [2022-12-13 18:45:17,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 42 transitions, 217 flow [2022-12-13 18:45:17,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 42 transitions, 217 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:45:17,244 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 136 flow [2022-12-13 18:45:17,244 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=23, 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=6, PETRI_FLOW=136, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2022-12-13 18:45:17,244 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 9 predicate places. [2022-12-13 18:45:17,244 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 136 flow [2022-12-13 18:45:17,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:17,245 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:17,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:45:17,245 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:17,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:17,246 INFO L85 PathProgramCache]: Analyzing trace with hash -505580949, now seen corresponding path program 2 times [2022-12-13 18:45:17,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:17,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518308402] [2022-12-13 18:45:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:17,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:17,314 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 18:45:17,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:17,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518308402] [2022-12-13 18:45:17,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518308402] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:17,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:17,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:45:17,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623334765] [2022-12-13 18:45:17,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:17,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:45:17,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:17,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:45:17,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:45:17,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 18:45:17,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:17,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 18:45:17,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:17,419 INFO L130 PetriNetUnfolder]: 126/219 cut-off events. [2022-12-13 18:45:17,419 INFO L131 PetriNetUnfolder]: For 288/288 co-relation queries the response was YES. [2022-12-13 18:45:17,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 219 events. 126/219 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 682 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 714. Up to 87 conditions per place. [2022-12-13 18:45:17,421 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 29 selfloop transitions, 15 changer transitions 8/52 dead transitions. [2022-12-13 18:45:17,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 52 transitions, 350 flow [2022-12-13 18:45:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:45:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:45:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 497 transitions. [2022-12-13 18:45:17,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46710526315789475 [2022-12-13 18:45:17,423 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 497 transitions. [2022-12-13 18:45:17,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 497 transitions. [2022-12-13 18:45:17,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:17,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 497 transitions. [2022-12-13 18:45:17,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,426 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,426 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 136 flow. Second operand 7 states and 497 transitions. [2022-12-13 18:45:17,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 52 transitions, 350 flow [2022-12-13 18:45:17,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 346 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 18:45:17,428 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 242 flow [2022-12-13 18:45:17,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2022-12-13 18:45:17,429 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 19 predicate places. [2022-12-13 18:45:17,429 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 242 flow [2022-12-13 18:45:17,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:17,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:17,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:45:17,430 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:17,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash -358334354, now seen corresponding path program 1 times [2022-12-13 18:45:17,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:17,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164917841] [2022-12-13 18:45:17,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:17,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:17,496 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 18:45:17,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:17,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164917841] [2022-12-13 18:45:17,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164917841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:17,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:17,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:45:17,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869014902] [2022-12-13 18:45:17,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:17,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:45:17,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:17,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:45:17,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:45:17,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 18:45:17,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:17,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 18:45:17,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:17,611 INFO L130 PetriNetUnfolder]: 162/283 cut-off events. [2022-12-13 18:45:17,611 INFO L131 PetriNetUnfolder]: For 817/817 co-relation queries the response was YES. [2022-12-13 18:45:17,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 283 events. 162/283 cut-off events. For 817/817 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 950 event pairs, 16 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1069. Up to 71 conditions per place. [2022-12-13 18:45:17,613 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 37 selfloop transitions, 21 changer transitions 3/61 dead transitions. [2022-12-13 18:45:17,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 490 flow [2022-12-13 18:45:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:45:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:45:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 566 transitions. [2022-12-13 18:45:17,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4654605263157895 [2022-12-13 18:45:17,615 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 566 transitions. [2022-12-13 18:45:17,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 566 transitions. [2022-12-13 18:45:17,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:17,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 566 transitions. [2022-12-13 18:45:17,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.75) internal successors, (566), 8 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,618 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,618 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 242 flow. Second operand 8 states and 566 transitions. [2022-12-13 18:45:17,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 490 flow [2022-12-13 18:45:17,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 469 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-12-13 18:45:17,622 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 348 flow [2022-12-13 18:45:17,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=348, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2022-12-13 18:45:17,623 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 29 predicate places. [2022-12-13 18:45:17,623 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 348 flow [2022-12-13 18:45:17,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:17,623 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:17,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:45:17,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:17,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:17,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1478301256, now seen corresponding path program 2 times [2022-12-13 18:45:17,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:17,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006647558] [2022-12-13 18:45:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:17,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:17,698 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 18:45:17,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:17,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006647558] [2022-12-13 18:45:17,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006647558] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:17,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:17,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:45:17,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403498779] [2022-12-13 18:45:17,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:17,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:45:17,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:17,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:45:17,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:45:17,718 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 18:45:17,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:17,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 18:45:17,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:17,827 INFO L130 PetriNetUnfolder]: 154/271 cut-off events. [2022-12-13 18:45:17,828 INFO L131 PetriNetUnfolder]: For 1323/1323 co-relation queries the response was YES. [2022-12-13 18:45:17,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 271 events. 154/271 cut-off events. For 1323/1323 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 927 event pairs, 22 based on Foata normal form. 8/279 useless extension candidates. Maximal degree in co-relation 1191. Up to 67 conditions per place. [2022-12-13 18:45:17,830 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 30 selfloop transitions, 21 changer transitions 8/59 dead transitions. [2022-12-13 18:45:17,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 578 flow [2022-12-13 18:45:17,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:45:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:45:17,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 495 transitions. [2022-12-13 18:45:17,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46522556390977443 [2022-12-13 18:45:17,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 495 transitions. [2022-12-13 18:45:17,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 495 transitions. [2022-12-13 18:45:17,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:17,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 495 transitions. [2022-12-13 18:45:17,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.71428571428571) internal successors, (495), 7 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,836 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,836 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 348 flow. Second operand 7 states and 495 transitions. [2022-12-13 18:45:17,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 578 flow [2022-12-13 18:45:17,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 539 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-13 18:45:17,843 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 400 flow [2022-12-13 18:45:17,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2022-12-13 18:45:17,844 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 33 predicate places. [2022-12-13 18:45:17,844 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 400 flow [2022-12-13 18:45:17,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:17,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:17,845 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:17,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:45:17,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:17,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:17,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1417274535, now seen corresponding path program 3 times [2022-12-13 18:45:17,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:17,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977761664] [2022-12-13 18:45:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:17,936 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 18:45:17,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:17,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977761664] [2022-12-13 18:45:17,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977761664] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:45:17,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41989587] [2022-12-13 18:45:17,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:45:17,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:17,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:17,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:17,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:45:17,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 18:45:17,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:45:17,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:45:18,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:18,082 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 18:45:18,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:45:18,172 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 18:45:18,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41989587] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:45:18,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:45:18,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 18:45:18,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141377173] [2022-12-13 18:45:18,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:45:18,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:45:18,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:18,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:45:18,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:45:18,211 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 18:45:18,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 400 flow. Second operand has 13 states, 13 states have (on average 66.84615384615384) internal successors, (869), 13 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:18,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:18,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 18:45:18,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:18,444 INFO L130 PetriNetUnfolder]: 202/351 cut-off events. [2022-12-13 18:45:18,444 INFO L131 PetriNetUnfolder]: For 2205/2205 co-relation queries the response was YES. [2022-12-13 18:45:18,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 351 events. 202/351 cut-off events. For 2205/2205 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1211 event pairs, 18 based on Foata normal form. 16/367 useless extension candidates. Maximal degree in co-relation 1659. Up to 87 conditions per place. [2022-12-13 18:45:18,446 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 34 selfloop transitions, 36 changer transitions 22/92 dead transitions. [2022-12-13 18:45:18,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 960 flow [2022-12-13 18:45:18,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:45:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 18:45:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 984 transitions. [2022-12-13 18:45:18,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.462406015037594 [2022-12-13 18:45:18,449 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 984 transitions. [2022-12-13 18:45:18,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 984 transitions. [2022-12-13 18:45:18,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:18,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 984 transitions. [2022-12-13 18:45:18,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 70.28571428571429) internal successors, (984), 14 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:18,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:18,454 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:18,454 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 400 flow. Second operand 14 states and 984 transitions. [2022-12-13 18:45:18,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 960 flow [2022-12-13 18:45:18,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 92 transitions, 895 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-12-13 18:45:18,459 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 703 flow [2022-12-13 18:45:18,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=703, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2022-12-13 18:45:18,459 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 45 predicate places. [2022-12-13 18:45:18,460 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 703 flow [2022-12-13 18:45:18,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 66.84615384615384) internal successors, (869), 13 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:18,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:18,460 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:18,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:45:18,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 18:45:18,661 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:18,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1090632032, now seen corresponding path program 4 times [2022-12-13 18:45:18,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:18,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780401712] [2022-12-13 18:45:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:18,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:45:18,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:18,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780401712] [2022-12-13 18:45:18,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780401712] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:45:18,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106272966] [2022-12-13 18:45:18,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:45:18,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:18,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:18,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:18,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:45:18,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:45:18,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:45:18,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:45:18,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:45:18,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:45:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:45:18,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106272966] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:45:18,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:45:18,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-13 18:45:18,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428798855] [2022-12-13 18:45:18,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:45:18,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 18:45:18,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:18,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 18:45:18,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:45:19,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 18:45:19,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 703 flow. Second operand has 16 states, 16 states have (on average 66.8125) internal successors, (1069), 16 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:19,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:19,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 18:45:19,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:19,280 INFO L130 PetriNetUnfolder]: 258/463 cut-off events. [2022-12-13 18:45:19,280 INFO L131 PetriNetUnfolder]: For 4310/4310 co-relation queries the response was YES. [2022-12-13 18:45:19,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 463 events. 258/463 cut-off events. For 4310/4310 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1657 event pairs, 55 based on Foata normal form. 32/495 useless extension candidates. Maximal degree in co-relation 2423. Up to 237 conditions per place. [2022-12-13 18:45:19,283 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 64 selfloop transitions, 27 changer transitions 27/118 dead transitions. [2022-12-13 18:45:19,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 118 transitions, 1471 flow [2022-12-13 18:45:19,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:45:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 18:45:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1123 transitions. [2022-12-13 18:45:19,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46175986842105265 [2022-12-13 18:45:19,286 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1123 transitions. [2022-12-13 18:45:19,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1123 transitions. [2022-12-13 18:45:19,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:19,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1123 transitions. [2022-12-13 18:45:19,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 70.1875) internal successors, (1123), 16 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:19,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 152.0) internal successors, (2584), 17 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:19,291 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 152.0) internal successors, (2584), 17 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:19,291 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 703 flow. Second operand 16 states and 1123 transitions. [2022-12-13 18:45:19,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 118 transitions, 1471 flow [2022-12-13 18:45:19,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 1112 flow, removed 167 selfloop flow, removed 5 redundant places. [2022-12-13 18:45:19,300 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 783 flow [2022-12-13 18:45:19,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=783, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2022-12-13 18:45:19,300 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 65 predicate places. [2022-12-13 18:45:19,300 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 783 flow [2022-12-13 18:45:19,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.8125) internal successors, (1069), 16 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:19,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:19,301 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:19,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:45:19,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 18:45:19,502 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:19,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:19,502 INFO L85 PathProgramCache]: Analyzing trace with hash 546245172, now seen corresponding path program 5 times [2022-12-13 18:45:19,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:19,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337085734] [2022-12-13 18:45:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:19,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:19,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:45:19,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:19,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337085734] [2022-12-13 18:45:19,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337085734] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:45:19,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916994594] [2022-12-13 18:45:19,631 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:45:19,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:19,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:19,632 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:19,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:45:19,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 18:45:19,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:45:19,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:45:19,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:45:19,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:45:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:45:19,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916994594] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:45:19,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:45:19,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-13 18:45:19,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25761448] [2022-12-13 18:45:19,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:45:19,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:45:19,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:19,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:45:19,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:45:19,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 18:45:19,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 783 flow. Second operand has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:19,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:19,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 18:45:19,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:20,376 INFO L130 PetriNetUnfolder]: 412/755 cut-off events. [2022-12-13 18:45:20,376 INFO L131 PetriNetUnfolder]: For 12130/12130 co-relation queries the response was YES. [2022-12-13 18:45:20,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4022 conditions, 755 events. 412/755 cut-off events. For 12130/12130 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3355 event pairs, 44 based on Foata normal form. 32/787 useless extension candidates. Maximal degree in co-relation 3988. Up to 227 conditions per place. [2022-12-13 18:45:20,380 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 73 selfloop transitions, 72 changer transitions 37/182 dead transitions. [2022-12-13 18:45:20,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 182 transitions, 2103 flow [2022-12-13 18:45:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 18:45:20,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 18:45:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1544 transitions. [2022-12-13 18:45:20,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2022-12-13 18:45:20,383 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1544 transitions. [2022-12-13 18:45:20,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1544 transitions. [2022-12-13 18:45:20,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:20,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1544 transitions. [2022-12-13 18:45:20,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 70.18181818181819) internal successors, (1544), 22 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:20,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:20,390 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:20,390 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 783 flow. Second operand 22 states and 1544 transitions. [2022-12-13 18:45:20,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 182 transitions, 2103 flow [2022-12-13 18:45:20,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 182 transitions, 1982 flow, removed 51 selfloop flow, removed 4 redundant places. [2022-12-13 18:45:20,412 INFO L231 Difference]: Finished difference. Result has 119 places, 108 transitions, 1492 flow [2022-12-13 18:45:20,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1492, PETRI_PLACES=119, PETRI_TRANSITIONS=108} [2022-12-13 18:45:20,412 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 96 predicate places. [2022-12-13 18:45:20,413 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 108 transitions, 1492 flow [2022-12-13 18:45:20,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:20,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:20,413 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:20,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 18:45:20,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:20,614 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:20,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:20,615 INFO L85 PathProgramCache]: Analyzing trace with hash -545058144, now seen corresponding path program 6 times [2022-12-13 18:45:20,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:20,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501573362] [2022-12-13 18:45:20,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:20,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:45:20,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:20,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501573362] [2022-12-13 18:45:20,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501573362] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:45:20,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950057658] [2022-12-13 18:45:20,795 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 18:45:20,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:20,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:20,796 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:20,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:45:20,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 18:45:20,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:45:20,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:45:20,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:45:20,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:45:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:45:20,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950057658] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:45:20,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:45:20,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-13 18:45:20,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672925453] [2022-12-13 18:45:20,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:45:20,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:45:20,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:20,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:45:20,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:45:21,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 18:45:21,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 108 transitions, 1492 flow. Second operand has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:21,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:21,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 18:45:21,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:21,510 INFO L130 PetriNetUnfolder]: 576/1035 cut-off events. [2022-12-13 18:45:21,510 INFO L131 PetriNetUnfolder]: For 32162/32162 co-relation queries the response was YES. [2022-12-13 18:45:21,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7177 conditions, 1035 events. 576/1035 cut-off events. For 32162/32162 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4841 event pairs, 20 based on Foata normal form. 32/1067 useless extension candidates. Maximal degree in co-relation 7128. Up to 327 conditions per place. [2022-12-13 18:45:21,516 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 61 selfloop transitions, 128 changer transitions 48/237 dead transitions. [2022-12-13 18:45:21,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 237 transitions, 3608 flow [2022-12-13 18:45:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 18:45:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-13 18:45:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1895 transitions. [2022-12-13 18:45:21,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46174463937621835 [2022-12-13 18:45:21,519 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1895 transitions. [2022-12-13 18:45:21,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1895 transitions. [2022-12-13 18:45:21,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:21,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1895 transitions. [2022-12-13 18:45:21,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 70.18518518518519) internal successors, (1895), 27 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:21,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:21,526 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:21,526 INFO L175 Difference]: Start difference. First operand has 119 places, 108 transitions, 1492 flow. Second operand 27 states and 1895 transitions. [2022-12-13 18:45:21,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 237 transitions, 3608 flow [2022-12-13 18:45:21,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 237 transitions, 3302 flow, removed 143 selfloop flow, removed 4 redundant places. [2022-12-13 18:45:21,576 INFO L231 Difference]: Finished difference. Result has 156 places, 150 transitions, 2484 flow [2022-12-13 18:45:21,577 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2484, PETRI_PLACES=156, PETRI_TRANSITIONS=150} [2022-12-13 18:45:21,577 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 133 predicate places. [2022-12-13 18:45:21,577 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 150 transitions, 2484 flow [2022-12-13 18:45:21,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:21,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:21,578 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:21,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:45:21,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:21,778 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:21,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1796887687, now seen corresponding path program 7 times [2022-12-13 18:45:21,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:21,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917797107] [2022-12-13 18:45:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:21,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:21,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:21,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917797107] [2022-12-13 18:45:21,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917797107] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:45:21,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932331846] [2022-12-13 18:45:21,906 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 18:45:21,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:21,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:21,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:21,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:45:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:21,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 18:45:21,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:22,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:45:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:22,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932331846] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:45:22,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:45:22,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-13 18:45:22,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870717739] [2022-12-13 18:45:22,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:45:22,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 18:45:22,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:22,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 18:45:22,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2022-12-13 18:45:22,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 18:45:22,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 150 transitions, 2484 flow. Second operand has 24 states, 24 states have (on average 66.45833333333333) internal successors, (1595), 24 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:22,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:22,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 18:45:22,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:22,599 INFO L130 PetriNetUnfolder]: 676/1211 cut-off events. [2022-12-13 18:45:22,599 INFO L131 PetriNetUnfolder]: For 54752/54752 co-relation queries the response was YES. [2022-12-13 18:45:22,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10482 conditions, 1211 events. 676/1211 cut-off events. For 54752/54752 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5713 event pairs, 35 based on Foata normal form. 12/1223 useless extension candidates. Maximal degree in co-relation 10418. Up to 390 conditions per place. [2022-12-13 18:45:22,607 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 70 selfloop transitions, 138 changer transitions 36/244 dead transitions. [2022-12-13 18:45:22,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 244 transitions, 4776 flow [2022-12-13 18:45:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 18:45:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 18:45:22,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1608 transitions. [2022-12-13 18:45:22,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.459954233409611 [2022-12-13 18:45:22,622 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1608 transitions. [2022-12-13 18:45:22,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1608 transitions. [2022-12-13 18:45:22,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:22,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1608 transitions. [2022-12-13 18:45:22,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 69.91304347826087) internal successors, (1608), 23 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:22,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:22,630 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:22,630 INFO L175 Difference]: Start difference. First operand has 156 places, 150 transitions, 2484 flow. Second operand 23 states and 1608 transitions. [2022-12-13 18:45:22,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 244 transitions, 4776 flow [2022-12-13 18:45:22,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 244 transitions, 3661 flow, removed 532 selfloop flow, removed 10 redundant places. [2022-12-13 18:45:22,727 INFO L231 Difference]: Finished difference. Result has 176 places, 180 transitions, 2843 flow [2022-12-13 18:45:22,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2843, PETRI_PLACES=176, PETRI_TRANSITIONS=180} [2022-12-13 18:45:22,727 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 153 predicate places. [2022-12-13 18:45:22,728 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 180 transitions, 2843 flow [2022-12-13 18:45:22,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 66.45833333333333) internal successors, (1595), 24 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:22,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:22,728 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:22,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 18:45:22,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 18:45:22,930 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:22,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:22,931 INFO L85 PathProgramCache]: Analyzing trace with hash -988688965, now seen corresponding path program 8 times [2022-12-13 18:45:22,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:22,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480132534] [2022-12-13 18:45:22,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:22,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:23,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:23,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480132534] [2022-12-13 18:45:23,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480132534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:45:23,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917396852] [2022-12-13 18:45:23,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:45:23,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:23,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:23,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:23,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:45:23,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:45:23,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:45:23,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:45:23,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:23,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:45:23,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917396852] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:23,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:45:23,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2022-12-13 18:45:23,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733974071] [2022-12-13 18:45:23,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:23,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:45:23,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:23,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:45:23,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:45:23,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 152 [2022-12-13 18:45:23,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 180 transitions, 2843 flow. Second operand has 8 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:23,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:23,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 152 [2022-12-13 18:45:23,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:23,511 INFO L130 PetriNetUnfolder]: 1360/2270 cut-off events. [2022-12-13 18:45:23,511 INFO L131 PetriNetUnfolder]: For 76788/76788 co-relation queries the response was YES. [2022-12-13 18:45:23,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15422 conditions, 2270 events. 1360/2270 cut-off events. For 76788/76788 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12225 event pairs, 61 based on Foata normal form. 218/2488 useless extension candidates. Maximal degree in co-relation 15351. Up to 1416 conditions per place. [2022-12-13 18:45:23,522 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 24 selfloop transitions, 6 changer transitions 398/428 dead transitions. [2022-12-13 18:45:23,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 428 transitions, 7205 flow [2022-12-13 18:45:23,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:45:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:45:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 590 transitions. [2022-12-13 18:45:23,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48519736842105265 [2022-12-13 18:45:23,523 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 590 transitions. [2022-12-13 18:45:23,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 590 transitions. [2022-12-13 18:45:23,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:23,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 590 transitions. [2022-12-13 18:45:23,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 73.75) internal successors, (590), 8 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:23,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:23,525 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:23,525 INFO L175 Difference]: Start difference. First operand has 176 places, 180 transitions, 2843 flow. Second operand 8 states and 590 transitions. [2022-12-13 18:45:23,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 428 transitions, 7205 flow [2022-12-13 18:45:23,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 428 transitions, 6737 flow, removed 120 selfloop flow, removed 9 redundant places. [2022-12-13 18:45:23,651 INFO L231 Difference]: Finished difference. Result has 177 places, 22 transitions, 288 flow [2022-12-13 18:45:23,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=177, PETRI_TRANSITIONS=22} [2022-12-13 18:45:23,652 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 154 predicate places. [2022-12-13 18:45:23,652 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 22 transitions, 288 flow [2022-12-13 18:45:23,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:23,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:23,652 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:23,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 18:45:23,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 18:45:23,853 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 18:45:23,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:23,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1875333361, now seen corresponding path program 9 times [2022-12-13 18:45:23,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:23,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84924930] [2022-12-13 18:45:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:23,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:23,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:23,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84924930] [2022-12-13 18:45:23,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84924930] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:45:23,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801725040] [2022-12-13 18:45:23,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:45:23,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:23,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:23,927 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:23,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:45:23,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 18:45:23,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:45:23,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:45:23,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:24,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:45:24,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801725040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:24,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:45:24,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2022-12-13 18:45:24,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737035201] [2022-12-13 18:45:24,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:24,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:45:24,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:24,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:45:24,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:45:24,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 152 [2022-12-13 18:45:24,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 22 transitions, 288 flow. Second operand has 8 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:24,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:24,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 152 [2022-12-13 18:45:24,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:24,112 INFO L130 PetriNetUnfolder]: 68/141 cut-off events. [2022-12-13 18:45:24,112 INFO L131 PetriNetUnfolder]: For 3309/3309 co-relation queries the response was YES. [2022-12-13 18:45:24,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 141 events. 68/141 cut-off events. For 3309/3309 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 361 event pairs, 2 based on Foata normal form. 14/155 useless extension candidates. Maximal degree in co-relation 1023. Up to 82 conditions per place. [2022-12-13 18:45:24,114 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2022-12-13 18:45:24,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 61 transitions, 774 flow [2022-12-13 18:45:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:45:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:45:24,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 586 transitions. [2022-12-13 18:45:24,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4819078947368421 [2022-12-13 18:45:24,116 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 586 transitions. [2022-12-13 18:45:24,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 586 transitions. [2022-12-13 18:45:24,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:24,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 586 transitions. [2022-12-13 18:45:24,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 73.25) internal successors, (586), 8 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:24,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:24,120 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:24,120 INFO L175 Difference]: Start difference. First operand has 177 places, 22 transitions, 288 flow. Second operand 8 states and 586 transitions. [2022-12-13 18:45:24,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 61 transitions, 774 flow [2022-12-13 18:45:24,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 61 transitions, 454 flow, removed 88 selfloop flow, removed 42 redundant places. [2022-12-13 18:45:24,124 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2022-12-13 18:45:24,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2022-12-13 18:45:24,124 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 57 predicate places. [2022-12-13 18:45:24,124 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2022-12-13 18:45:24,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:45:24,126 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2022-12-13 18:45:24,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2022-12-13 18:45:24,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2022-12-13 18:45:24,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2022-12-13 18:45:24,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2022-12-13 18:45:24,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2022-12-13 18:45:24,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-12-13 18:45:24,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-12-13 18:45:24,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 18:45:24,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 18:45:24,329 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 1, 1, 1, 1, 1] [2022-12-13 18:45:24,338 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 18:45:24,338 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:45:24,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:45:24 BasicIcfg [2022-12-13 18:45:24,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:45:24,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:45:24,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:45:24,347 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:45:24,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:45:14" (3/4) ... [2022-12-13 18:45:24,356 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:45:24,373 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-12-13 18:45:24,373 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-12-13 18:45:24,381 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-13 18:45:24,381 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 18:45:24,382 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 18:45:24,382 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 18:45:24,426 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:45:24,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:45:24,427 INFO L158 Benchmark]: Toolchain (without parser) took 10948.51ms. Allocated memory was 115.3MB in the beginning and 195.0MB in the end (delta: 79.7MB). Free memory was 80.9MB in the beginning and 62.7MB in the end (delta: 18.2MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. [2022-12-13 18:45:24,427 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 115.3MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:45:24,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.09ms. Allocated memory is still 115.3MB. Free memory was 80.9MB in the beginning and 60.7MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 18:45:24,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.49ms. Allocated memory is still 115.3MB. Free memory was 60.7MB in the beginning and 58.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:45:24,427 INFO L158 Benchmark]: Boogie Preprocessor took 23.35ms. Allocated memory is still 115.3MB. Free memory was 58.6MB in the beginning and 57.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:45:24,428 INFO L158 Benchmark]: RCFGBuilder took 334.15ms. Allocated memory was 115.3MB in the beginning and 161.5MB in the end (delta: 46.1MB). Free memory was 57.2MB in the beginning and 131.8MB in the end (delta: -74.6MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2022-12-13 18:45:24,428 INFO L158 Benchmark]: TraceAbstraction took 10108.72ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 131.8MB in the beginning and 65.8MB in the end (delta: 65.9MB). Peak memory consumption was 100.3MB. Max. memory is 16.1GB. [2022-12-13 18:45:24,428 INFO L158 Benchmark]: Witness Printer took 79.52ms. Allocated memory is still 195.0MB. Free memory was 65.8MB in the beginning and 62.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:45:24,429 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 115.3MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.09ms. Allocated memory is still 115.3MB. Free memory was 80.9MB in the beginning and 60.7MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.49ms. Allocated memory is still 115.3MB. Free memory was 60.7MB in the beginning and 58.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.35ms. Allocated memory is still 115.3MB. Free memory was 58.6MB in the beginning and 57.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 334.15ms. Allocated memory was 115.3MB in the beginning and 161.5MB in the end (delta: 46.1MB). Free memory was 57.2MB in the beginning and 131.8MB in the end (delta: -74.6MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10108.72ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 131.8MB in the beginning and 65.8MB in the end (delta: 65.9MB). Peak memory consumption was 100.3MB. Max. memory is 16.1GB. * Witness Printer took 79.52ms. Allocated memory is still 195.0MB. Free memory was 65.8MB in the beginning and 62.7MB in the end (delta: 3.1MB). 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: 1.8s, 78 PlacesBefore, 23 PlacesAfterwards, 76 TransitionsBefore, 18 TransitionsAfterwards, 1298 CoEnabledTransitionPairs, 5 FixpointIterations, 28 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 74 TotalNumberOfCompositions, 1200 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 978, independent: 946, independent conditional: 0, independent unconditional: 946, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 693, independent: 677, independent conditional: 0, independent unconditional: 677, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 978, independent: 269, independent conditional: 0, independent unconditional: 269, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 693, unknown conditional: 0, unknown unconditional: 693] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, 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: 722]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 711]: 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, 96 locations, 8 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: 10.0s, OverallIterations: 16, TraceHistogramMax: 6, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1568 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1406 mSDsluCounter, 341 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 303 mSDsCounter, 206 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2329 IncrementalHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 206 mSolverCounterUnsat, 38 mSDtfsCounter, 2329 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2843occurred in iteration=14, InterpolantAutomatonStates: 161, 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, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 271 NumberOfCodeBlocks, 271 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 1272 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1065 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 28 InterpolantComputations, 11 PerfectInterpolantSequences, 99/214 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 18:45:24,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5e5a5a-39cf-4e7d-a7a2-1694a932e2ec/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE