./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/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_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/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_b84890af-3204-4367-8c90-d6c7b603b7fd/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 be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea --- 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 10:58:43,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 10:58:43,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 10:58:43,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 10:58:43,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 10:58:43,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 10:58:43,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 10:58:43,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 10:58:43,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 10:58:43,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 10:58:43,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 10:58:43,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 10:58:43,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 10:58:43,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 10:58:43,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 10:58:43,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 10:58:43,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 10:58:43,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 10:58:43,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 10:58:43,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 10:58:43,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 10:58:43,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 10:58:43,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 10:58:43,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 10:58:43,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 10:58:43,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 10:58:43,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 10:58:43,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 10:58:43,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 10:58:43,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 10:58:43,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 10:58:43,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 10:58:43,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 10:58:43,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 10:58:43,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 10:58:43,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 10:58:43,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 10:58:43,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 10:58:43,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 10:58:43,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 10:58:43,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 10:58:43,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 10:58:43,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 10:58:43,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 10:58:43,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 10:58:43,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 10:58:43,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 10:58:43,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 10:58:43,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 10:58:43,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 10:58:43,449 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 10:58:43,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 10:58:43,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 10:58:43,449 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 10:58:43,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 10:58:43,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 10:58:43,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 10:58:43,450 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 10:58:43,450 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 10:58:43,450 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 10:58:43,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 10:58:43,451 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 10:58:43,451 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 10:58:43,451 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 10:58:43,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 10:58:43,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 10:58:43,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 10:58:43,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:58:43,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 10:58:43,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 10:58:43,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 10:58:43,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 10:58:43,453 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 10:58:43,453 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 10:58:43,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 10:58:43,453 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 10:58:43,453 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_b84890af-3204-4367-8c90-d6c7b603b7fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea [2022-12-13 10:58:43,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 10:58:43,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 10:58:43,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 10:58:43,696 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 10:58:43,696 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 10:58:43,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-12-13 10:58:46,323 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 10:58:46,451 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 10:58:46,451 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-12-13 10:58:46,456 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8/data/92f3e905b/0950b145d2ea41adb90aab27188632ef/FLAG05e66c686 [2022-12-13 10:58:46,468 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8/data/92f3e905b/0950b145d2ea41adb90aab27188632ef [2022-12-13 10:58:46,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 10:58:46,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 10:58:46,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 10:58:46,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 10:58:46,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 10:58:46,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29092114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46, skipping insertion in model container [2022-12-13 10:58:46,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 10:58:46,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 10:58:46,656 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_b84890af-3204-4367-8c90-d6c7b603b7fd/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2022-12-13 10:58:46,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:58:46,673 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 10:58:46,697 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_b84890af-3204-4367-8c90-d6c7b603b7fd/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2022-12-13 10:58:46,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:58:46,714 INFO L208 MainTranslator]: Completed translation [2022-12-13 10:58:46,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46 WrapperNode [2022-12-13 10:58:46,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 10:58:46,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 10:58:46,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 10:58:46,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 10:58:46,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,758 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 197 [2022-12-13 10:58:46,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 10:58:46,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 10:58:46,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 10:58:46,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 10:58:46,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,785 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 10:58:46,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 10:58:46,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 10:58:46,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 10:58:46,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46" (1/1) ... [2022-12-13 10:58:46,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:58:46,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:58:46,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 10:58:46,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 10:58:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 10:58:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 10:58:46,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 10:58:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 10:58:46,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 10:58:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 10:58:46,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 10:58:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 10:58:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 10:58:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 10:58:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 10:58:46,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 10:58:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 10:58:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 10:58:46,857 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 10:58:46,948 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 10:58:46,951 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 10:58:47,246 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 10:58:47,257 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 10:58:47,257 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 10:58:47,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:58:47 BoogieIcfgContainer [2022-12-13 10:58:47,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 10:58:47,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 10:58:47,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 10:58:47,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 10:58:47,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:58:46" (1/3) ... [2022-12-13 10:58:47,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282b31a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:58:47, skipping insertion in model container [2022-12-13 10:58:47,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:58:46" (2/3) ... [2022-12-13 10:58:47,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282b31a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:58:47, skipping insertion in model container [2022-12-13 10:58:47,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:58:47" (3/3) ... [2022-12-13 10:58:47,269 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2022-12-13 10:58:47,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 10:58:47,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-13 10:58:47,284 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 10:58:47,366 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 10:58:47,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 272 transitions, 568 flow [2022-12-13 10:58:47,498 INFO L130 PetriNetUnfolder]: 20/269 cut-off events. [2022-12-13 10:58:47,499 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 10:58:47,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 269 events. 20/269 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 627 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 175. Up to 2 conditions per place. [2022-12-13 10:58:47,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 272 transitions, 568 flow [2022-12-13 10:58:47,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 264 transitions, 546 flow [2022-12-13 10:58:47,515 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 10:58:47,523 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 264 transitions, 546 flow [2022-12-13 10:58:47,525 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 264 transitions, 546 flow [2022-12-13 10:58:47,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 264 transitions, 546 flow [2022-12-13 10:58:47,564 INFO L130 PetriNetUnfolder]: 20/264 cut-off events. [2022-12-13 10:58:47,564 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 10:58:47,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 264 events. 20/264 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 627 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 175. Up to 2 conditions per place. [2022-12-13 10:58:47,571 INFO L119 LiptonReduction]: Number of co-enabled transitions 20400 [2022-12-13 10:58:54,948 INFO L134 LiptonReduction]: Checked pairs total: 19137 [2022-12-13 10:58:54,948 INFO L136 LiptonReduction]: Total number of compositions: 334 [2022-12-13 10:58:54,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:58:54,962 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;@164cb5f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 10:58:54,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 10:58:54,963 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 10:58:54,963 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:58:54,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:58:54,964 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 10:58:54,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:58:54,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:54,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1140, now seen corresponding path program 1 times [2022-12-13 10:58:54,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:54,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999506279] [2022-12-13 10:58:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:54,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:55,061 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 10:58:55,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:55,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999506279] [2022-12-13 10:58:55,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999506279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:55,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:55,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 10:58:55,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219318718] [2022-12-13 10:58:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:55,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 10:58:55,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:55,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 10:58:55,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 10:58:55,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 606 [2022-12-13 10:58:55,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 257.5) internal successors, (515), 2 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:58:55,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 606 [2022-12-13 10:58:55,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:58:55,199 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2022-12-13 10:58:55,199 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 10:58:55,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 456 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2022-12-13 10:58:55,201 INFO L137 encePairwiseOnDemand]: 603/606 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2022-12-13 10:58:55,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2022-12-13 10:58:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 10:58:55,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 10:58:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 543 transitions. [2022-12-13 10:58:55,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44801980198019803 [2022-12-13 10:58:55,213 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 543 transitions. [2022-12-13 10:58:55,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 543 transitions. [2022-12-13 10:58:55,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:58:55,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 543 transitions. [2022-12-13 10:58:55,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 271.5) internal successors, (543), 2 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 606.0) internal successors, (1818), 3 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,224 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 606.0) internal successors, (1818), 3 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,225 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 543 transitions. [2022-12-13 10:58:55,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2022-12-13 10:58:55,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 10:58:55,228 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2022-12-13 10:58:55,229 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2022-12-13 10:58:55,232 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-12-13 10:58:55,232 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2022-12-13 10:58:55,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 257.5) internal successors, (515), 2 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:58:55,233 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 10:58:55,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 10:58:55,233 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:58:55,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:55,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1119653, now seen corresponding path program 1 times [2022-12-13 10:58:55,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:55,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833924273] [2022-12-13 10:58:55,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:55,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:55,387 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 10:58:55,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:55,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833924273] [2022-12-13 10:58:55,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833924273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:55,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:55,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 10:58:55,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332714015] [2022-12-13 10:58:55,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:55,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:58:55,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:58:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:58:55,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 606 [2022-12-13 10:58:55,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:58:55,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 606 [2022-12-13 10:58:55,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:58:55,517 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2022-12-13 10:58:55,518 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:58:55,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 414 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2022-12-13 10:58:55,519 INFO L137 encePairwiseOnDemand]: 603/606 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2022-12-13 10:58:55,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2022-12-13 10:58:55,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:58:55,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:58:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2022-12-13 10:58:55,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4218921892189219 [2022-12-13 10:58:55,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 767 transitions. [2022-12-13 10:58:55,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 767 transitions. [2022-12-13 10:58:55,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:58:55,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 767 transitions. [2022-12-13 10:58:55,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,529 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 767 transitions. [2022-12-13 10:58:55,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2022-12-13 10:58:55,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 10:58:55,530 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2022-12-13 10:58:55,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2022-12-13 10:58:55,531 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-12-13 10:58:55,531 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2022-12-13 10:58:55,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:58:55,531 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 10:58:55,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 10:58:55,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:58:55,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:55,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1119654, now seen corresponding path program 1 times [2022-12-13 10:58:55,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:55,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253890541] [2022-12-13 10:58:55,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:55,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:55,616 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 10:58:55,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:55,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253890541] [2022-12-13 10:58:55,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253890541] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:55,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:55,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 10:58:55,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988006528] [2022-12-13 10:58:55,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:55,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:58:55,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:55,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:58:55,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:58:55,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 606 [2022-12-13 10:58:55,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:58:55,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 606 [2022-12-13 10:58:55,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:58:55,731 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2022-12-13 10:58:55,732 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:58:55,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 375 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2022-12-13 10:58:55,733 INFO L137 encePairwiseOnDemand]: 603/606 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2022-12-13 10:58:55,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2022-12-13 10:58:55,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:58:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:58:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2022-12-13 10:58:55,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.429042904290429 [2022-12-13 10:58:55,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2022-12-13 10:58:55,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2022-12-13 10:58:55,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:58:55,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2022-12-13 10:58:55,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,741 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 780 transitions. [2022-12-13 10:58:55,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2022-12-13 10:58:55,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 10:58:55,742 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2022-12-13 10:58:55,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-12-13 10:58:55,742 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2022-12-13 10:58:55,742 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2022-12-13 10:58:55,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:58:55,743 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 10:58:55,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 10:58:55,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:58:55,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:55,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1076010548, now seen corresponding path program 1 times [2022-12-13 10:58:55,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:55,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498761956] [2022-12-13 10:58:55,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:55,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:55,801 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 10:58:55,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:55,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498761956] [2022-12-13 10:58:55,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498761956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:55,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:55,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 10:58:55,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018762495] [2022-12-13 10:58:55,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:55,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:58:55,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:55,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:58:55,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:58:55,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 606 [2022-12-13 10:58:55,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:58:55,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 606 [2022-12-13 10:58:55,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:58:55,905 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2022-12-13 10:58:55,905 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:58:55,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 336 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2022-12-13 10:58:55,906 INFO L137 encePairwiseOnDemand]: 603/606 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2022-12-13 10:58:55,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2022-12-13 10:58:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:58:55,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:58:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 778 transitions. [2022-12-13 10:58:55,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42794279427942794 [2022-12-13 10:58:55,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 778 transitions. [2022-12-13 10:58:55,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 778 transitions. [2022-12-13 10:58:55,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:58:55,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 778 transitions. [2022-12-13 10:58:55,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,916 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 778 transitions. [2022-12-13 10:58:55,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2022-12-13 10:58:55,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 10:58:55,917 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2022-12-13 10:58:55,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2022-12-13 10:58:55,918 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2022-12-13 10:58:55,918 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2022-12-13 10:58:55,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:58:55,919 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 10:58:55,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 10:58:55,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:58:55,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:55,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1076010549, now seen corresponding path program 1 times [2022-12-13 10:58:55,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:55,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714873159] [2022-12-13 10:58:55,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:55,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:55,958 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 10:58:55,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:55,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714873159] [2022-12-13 10:58:55,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714873159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:55,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:55,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 10:58:55,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460471311] [2022-12-13 10:58:55,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:55,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:58:55,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:55,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:58:55,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:58:55,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 606 [2022-12-13 10:58:55,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:55,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:58:55,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 606 [2022-12-13 10:58:55,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:58:56,056 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2022-12-13 10:58:56,057 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:58:56,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 298 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2022-12-13 10:58:56,058 INFO L137 encePairwiseOnDemand]: 603/606 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2022-12-13 10:58:56,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2022-12-13 10:58:56,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:58:56,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:58:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2022-12-13 10:58:56,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41859185918591857 [2022-12-13 10:58:56,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2022-12-13 10:58:56,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2022-12-13 10:58:56,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:58:56,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2022-12-13 10:58:56,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,067 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 761 transitions. [2022-12-13 10:58:56,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2022-12-13 10:58:56,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 10:58:56,068 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2022-12-13 10:58:56,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2022-12-13 10:58:56,069 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2022-12-13 10:58:56,069 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2022-12-13 10:58:56,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:58:56,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:58:56,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 10:58:56,070 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:58:56,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:56,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1040954692, now seen corresponding path program 1 times [2022-12-13 10:58:56,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:56,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316457238] [2022-12-13 10:58:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:56,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:56,160 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 10:58:56,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:56,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316457238] [2022-12-13 10:58:56,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316457238] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:56,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:56,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:58:56,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359657041] [2022-12-13 10:58:56,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:56,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:58:56,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:56,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:58:56,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:58:56,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 606 [2022-12-13 10:58:56,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 240.4) internal successors, (1202), 5 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:58:56,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 606 [2022-12-13 10:58:56,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:58:56,278 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2022-12-13 10:58:56,278 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:58:56,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 222 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2022-12-13 10:58:56,279 INFO L137 encePairwiseOnDemand]: 604/606 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2022-12-13 10:58:56,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2022-12-13 10:58:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:58:56,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:58:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2022-12-13 10:58:56,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4042904290429043 [2022-12-13 10:58:56,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2022-12-13 10:58:56,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2022-12-13 10:58:56,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:58:56,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2022-12-13 10:58:56,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,288 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 735 transitions. [2022-12-13 10:58:56,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2022-12-13 10:58:56,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 10:58:56,288 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2022-12-13 10:58:56,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2022-12-13 10:58:56,289 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2022-12-13 10:58:56,289 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2022-12-13 10:58:56,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 240.4) internal successors, (1202), 5 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:58:56,290 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:58:56,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 10:58:56,291 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:58:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:56,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1040954691, now seen corresponding path program 1 times [2022-12-13 10:58:56,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:56,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524484487] [2022-12-13 10:58:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:56,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:58:56,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:56,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524484487] [2022-12-13 10:58:56,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524484487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:56,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:56,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 10:58:56,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728435873] [2022-12-13 10:58:56,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:56,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:58:56,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:56,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:58:56,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:58:56,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 606 [2022-12-13 10:58:56,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:58:56,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 606 [2022-12-13 10:58:56,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:58:56,491 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2022-12-13 10:58:56,491 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:58:56,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2022-12-13 10:58:56,491 INFO L137 encePairwiseOnDemand]: 604/606 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2022-12-13 10:58:56,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2022-12-13 10:58:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:58:56,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:58:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2022-12-13 10:58:56,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4251925192519252 [2022-12-13 10:58:56,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2022-12-13 10:58:56,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2022-12-13 10:58:56,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:58:56,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2022-12-13 10:58:56,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,500 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 773 transitions. [2022-12-13 10:58:56,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2022-12-13 10:58:56,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 10:58:56,501 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2022-12-13 10:58:56,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2022-12-13 10:58:56,501 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2022-12-13 10:58:56,502 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2022-12-13 10:58:56,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:56,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:58:56,502 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:58:56,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 10:58:56,502 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:58:56,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:58:56,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1743922512, now seen corresponding path program 1 times [2022-12-13 10:58:56,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:58:56,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036437864] [2022-12-13 10:58:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:58:56,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:58:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:58:58,663 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 10:58:58,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:58:58,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036437864] [2022-12-13 10:58:58,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036437864] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:58:58,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:58:58,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:58:58,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115172000] [2022-12-13 10:58:58,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:58:58,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:58:58,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:58:58,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:58:58,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:58:59,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 606 [2022-12-13 10:58:59,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:58:59,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:58:59,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 606 [2022-12-13 10:58:59,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:59:00,019 INFO L130 PetriNetUnfolder]: 40/106 cut-off events. [2022-12-13 10:59:00,020 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 10:59:00,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 324 event pairs, 6 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2022-12-13 10:59:00,020 INFO L137 encePairwiseOnDemand]: 601/606 looper letters, 30 selfloop transitions, 6 changer transitions 9/45 dead transitions. [2022-12-13 10:59:00,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 203 flow [2022-12-13 10:59:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:59:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:59:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1444 transitions. [2022-12-13 10:59:00,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39713971397139713 [2022-12-13 10:59:00,024 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1444 transitions. [2022-12-13 10:59:00,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1444 transitions. [2022-12-13 10:59:00,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:59:00,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1444 transitions. [2022-12-13 10:59:00,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:00,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:00,031 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:00,031 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 1444 transitions. [2022-12-13 10:59:00,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 203 flow [2022-12-13 10:59:00,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 10:59:00,032 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 77 flow [2022-12-13 10:59:00,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2022-12-13 10:59:00,033 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2022-12-13 10:59:00,033 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 77 flow [2022-12-13 10:59:00,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:00,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:59:00,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:59:00,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 10:59:00,034 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:59:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:59:00,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1044103782, now seen corresponding path program 2 times [2022-12-13 10:59:00,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:59:00,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365014777] [2022-12-13 10:59:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:59:00,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:59:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:59:01,681 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 10:59:01,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:59:01,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365014777] [2022-12-13 10:59:01,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365014777] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:59:01,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:59:01,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:59:01,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703420334] [2022-12-13 10:59:01,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:59:01,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:59:01,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:59:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:59:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:59:02,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 606 [2022-12-13 10:59:02,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:02,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:59:02,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 606 [2022-12-13 10:59:02,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:59:02,575 INFO L130 PetriNetUnfolder]: 36/114 cut-off events. [2022-12-13 10:59:02,575 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-12-13 10:59:02,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 114 events. 36/114 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 401 event pairs, 4 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 318. Up to 62 conditions per place. [2022-12-13 10:59:02,576 INFO L137 encePairwiseOnDemand]: 601/606 looper letters, 28 selfloop transitions, 5 changer transitions 10/43 dead transitions. [2022-12-13 10:59:02,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 227 flow [2022-12-13 10:59:02,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:59:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:59:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1442 transitions. [2022-12-13 10:59:02,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3965896589658966 [2022-12-13 10:59:02,579 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1442 transitions. [2022-12-13 10:59:02,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1442 transitions. [2022-12-13 10:59:02,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:59:02,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1442 transitions. [2022-12-13 10:59:02,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:02,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:02,584 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:02,584 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 77 flow. Second operand 6 states and 1442 transitions. [2022-12-13 10:59:02,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 227 flow [2022-12-13 10:59:02,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 223 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 10:59:02,585 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 95 flow [2022-12-13 10:59:02,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=95, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2022-12-13 10:59:02,586 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-12-13 10:59:02,586 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 95 flow [2022-12-13 10:59:02,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:02,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:59:02,586 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:59:02,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 10:59:02,586 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:59:02,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:59:02,587 INFO L85 PathProgramCache]: Analyzing trace with hash -285824486, now seen corresponding path program 3 times [2022-12-13 10:59:02,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:59:02,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676195068] [2022-12-13 10:59:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:59:02,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:59:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:59:04,017 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 10:59:04,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:59:04,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676195068] [2022-12-13 10:59:04,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676195068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:59:04,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:59:04,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:59:04,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254632324] [2022-12-13 10:59:04,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:59:04,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:59:04,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:59:04,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:59:04,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:59:04,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 606 [2022-12-13 10:59:04,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:04,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:59:04,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 606 [2022-12-13 10:59:04,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:59:05,228 INFO L130 PetriNetUnfolder]: 20/70 cut-off events. [2022-12-13 10:59:05,228 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2022-12-13 10:59:05,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 70 events. 20/70 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 190 event pairs, 0 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 229. Up to 23 conditions per place. [2022-12-13 10:59:05,229 INFO L137 encePairwiseOnDemand]: 601/606 looper letters, 27 selfloop transitions, 6 changer transitions 9/42 dead transitions. [2022-12-13 10:59:05,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 239 flow [2022-12-13 10:59:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:59:05,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:59:05,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1440 transitions. [2022-12-13 10:59:05,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39603960396039606 [2022-12-13 10:59:05,231 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1440 transitions. [2022-12-13 10:59:05,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1440 transitions. [2022-12-13 10:59:05,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:59:05,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1440 transitions. [2022-12-13 10:59:05,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:05,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:05,236 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:05,237 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 95 flow. Second operand 6 states and 1440 transitions. [2022-12-13 10:59:05,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 239 flow [2022-12-13 10:59:05,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 217 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-12-13 10:59:05,238 INFO L231 Difference]: Finished difference. Result has 42 places, 20 transitions, 97 flow [2022-12-13 10:59:05,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=42, PETRI_TRANSITIONS=20} [2022-12-13 10:59:05,238 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2022-12-13 10:59:05,238 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 20 transitions, 97 flow [2022-12-13 10:59:05,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:05,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:59:05,239 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:59:05,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 10:59:05,239 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:59:05,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:59:05,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1312573892, now seen corresponding path program 4 times [2022-12-13 10:59:05,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:59:05,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293677699] [2022-12-13 10:59:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:59:05,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:59:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:59:06,774 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 10:59:06,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:59:06,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293677699] [2022-12-13 10:59:06,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293677699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:59:06,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:59:06,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:59:06,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754713044] [2022-12-13 10:59:06,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:59:06,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:59:06,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:59:06,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:59:06,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:59:07,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 606 [2022-12-13 10:59:07,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 20 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:07,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:59:07,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 606 [2022-12-13 10:59:07,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:59:08,123 INFO L130 PetriNetUnfolder]: 15/67 cut-off events. [2022-12-13 10:59:08,123 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-12-13 10:59:08,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 67 events. 15/67 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 185 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 221. Up to 41 conditions per place. [2022-12-13 10:59:08,124 INFO L137 encePairwiseOnDemand]: 601/606 looper letters, 18 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2022-12-13 10:59:08,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 205 flow [2022-12-13 10:59:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:59:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:59:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1432 transitions. [2022-12-13 10:59:08,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39383938393839385 [2022-12-13 10:59:08,126 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1432 transitions. [2022-12-13 10:59:08,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1432 transitions. [2022-12-13 10:59:08,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:59:08,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1432 transitions. [2022-12-13 10:59:08,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 238.66666666666666) internal successors, (1432), 6 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:08,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:08,131 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:08,131 INFO L175 Difference]: Start difference. First operand has 42 places, 20 transitions, 97 flow. Second operand 6 states and 1432 transitions. [2022-12-13 10:59:08,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 205 flow [2022-12-13 10:59:08,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 10:59:08,132 INFO L231 Difference]: Finished difference. Result has 45 places, 18 transitions, 91 flow [2022-12-13 10:59:08,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=45, PETRI_TRANSITIONS=18} [2022-12-13 10:59:08,133 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2022-12-13 10:59:08,133 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 18 transitions, 91 flow [2022-12-13 10:59:08,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:08,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:59:08,133 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:59:08,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 10:59:08,134 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:59:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:59:08,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2057276390, now seen corresponding path program 5 times [2022-12-13 10:59:08,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:59:08,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152994929] [2022-12-13 10:59:08,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:59:08,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:59:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:59:10,309 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 10:59:10,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:59:10,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152994929] [2022-12-13 10:59:10,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152994929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:59:10,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:59:10,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:59:10,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809613093] [2022-12-13 10:59:10,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:59:10,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:59:10,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:59:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:59:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:59:10,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 606 [2022-12-13 10:59:10,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 18 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:10,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:59:10,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 606 [2022-12-13 10:59:10,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:59:11,293 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2022-12-13 10:59:11,294 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-13 10:59:11,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 37 events. 7/37 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 128. Up to 14 conditions per place. [2022-12-13 10:59:11,294 INFO L137 encePairwiseOnDemand]: 601/606 looper letters, 17 selfloop transitions, 3 changer transitions 8/28 dead transitions. [2022-12-13 10:59:11,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 171 flow [2022-12-13 10:59:11,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:59:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:59:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1426 transitions. [2022-12-13 10:59:11,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3921892189218922 [2022-12-13 10:59:11,296 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1426 transitions. [2022-12-13 10:59:11,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1426 transitions. [2022-12-13 10:59:11,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:59:11,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1426 transitions. [2022-12-13 10:59:11,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.66666666666666) internal successors, (1426), 6 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:11,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:11,301 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:11,301 INFO L175 Difference]: Start difference. First operand has 45 places, 18 transitions, 91 flow. Second operand 6 states and 1426 transitions. [2022-12-13 10:59:11,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 171 flow [2022-12-13 10:59:11,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 152 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-12-13 10:59:11,302 INFO L231 Difference]: Finished difference. Result has 41 places, 16 transitions, 65 flow [2022-12-13 10:59:11,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=65, PETRI_PLACES=41, PETRI_TRANSITIONS=16} [2022-12-13 10:59:11,303 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-12-13 10:59:11,303 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 16 transitions, 65 flow [2022-12-13 10:59:11,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:11,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:59:11,303 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:59:11,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 10:59:11,303 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 10:59:11,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:59:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1788806280, now seen corresponding path program 6 times [2022-12-13 10:59:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:59:11,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098177213] [2022-12-13 10:59:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:59:11,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:59:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:59:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:59:12,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:59:12,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098177213] [2022-12-13 10:59:12,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098177213] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:59:12,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:59:12,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:59:12,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773894389] [2022-12-13 10:59:12,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:59:12,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:59:12,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:59:12,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:59:12,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:59:13,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 606 [2022-12-13 10:59:13,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 16 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:13,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:59:13,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 606 [2022-12-13 10:59:13,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:59:13,512 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2022-12-13 10:59:13,512 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 10:59:13,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 25 events. 5/25 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 86. Up to 10 conditions per place. [2022-12-13 10:59:13,513 INFO L137 encePairwiseOnDemand]: 601/606 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2022-12-13 10:59:13,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 20 transitions, 112 flow [2022-12-13 10:59:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:59:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:59:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1419 transitions. [2022-12-13 10:59:13,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39026402640264024 [2022-12-13 10:59:13,515 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1419 transitions. [2022-12-13 10:59:13,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1419 transitions. [2022-12-13 10:59:13,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:59:13,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1419 transitions. [2022-12-13 10:59:13,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 236.5) internal successors, (1419), 6 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:13,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:13,519 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:13,519 INFO L175 Difference]: Start difference. First operand has 41 places, 16 transitions, 65 flow. Second operand 6 states and 1419 transitions. [2022-12-13 10:59:13,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 20 transitions, 112 flow [2022-12-13 10:59:13,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 20 transitions, 99 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-12-13 10:59:13,520 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2022-12-13 10:59:13,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2022-12-13 10:59:13,520 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2022-12-13 10:59:13,520 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2022-12-13 10:59:13,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:59:13,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2022-12-13 10:59:13,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2022-12-13 10:59:13,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2022-12-13 10:59:13,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2022-12-13 10:59:13,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2022-12-13 10:59:13,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2022-12-13 10:59:13,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2022-12-13 10:59:13,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2022-12-13 10:59:13,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2022-12-13 10:59:13,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2022-12-13 10:59:13,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2022-12-13 10:59:13,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2022-12-13 10:59:13,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2022-12-13 10:59:13,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2022-12-13 10:59:13,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2022-12-13 10:59:13,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2022-12-13 10:59:13,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2022-12-13 10:59:13,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 10:59:13,524 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:59:13,526 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 10:59:13,526 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 10:59:13,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:59:13 BasicIcfg [2022-12-13 10:59:13,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 10:59:13,529 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 10:59:13,529 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 10:59:13,529 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 10:59:13,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:58:47" (3/4) ... [2022-12-13 10:59:13,531 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 10:59:13,535 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 10:59:13,536 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 10:59:13,536 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 10:59:13,538 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-12-13 10:59:13,538 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 10:59:13,538 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 10:59:13,539 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 10:59:13,565 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 10:59:13,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 10:59:13,566 INFO L158 Benchmark]: Toolchain (without parser) took 27095.08ms. Allocated memory was 142.6MB in the beginning and 299.9MB in the end (delta: 157.3MB). Free memory was 104.4MB in the beginning and 172.7MB in the end (delta: -68.4MB). Peak memory consumption was 91.0MB. Max. memory is 16.1GB. [2022-12-13 10:59:13,566 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 112.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 10:59:13,566 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.41ms. Allocated memory is still 142.6MB. Free memory was 103.9MB in the beginning and 92.5MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 10:59:13,566 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.68ms. Allocated memory is still 142.6MB. Free memory was 92.5MB in the beginning and 90.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 10:59:13,567 INFO L158 Benchmark]: Boogie Preprocessor took 31.94ms. Allocated memory is still 142.6MB. Free memory was 90.0MB in the beginning and 88.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 10:59:13,567 INFO L158 Benchmark]: RCFGBuilder took 468.20ms. Allocated memory is still 142.6MB. Free memory was 88.4MB in the beginning and 66.9MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 10:59:13,567 INFO L158 Benchmark]: TraceAbstraction took 26265.83ms. Allocated memory was 142.6MB in the beginning and 299.9MB in the end (delta: 157.3MB). Free memory was 66.6MB in the beginning and 175.9MB in the end (delta: -109.3MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. [2022-12-13 10:59:13,567 INFO L158 Benchmark]: Witness Printer took 36.69ms. Allocated memory is still 299.9MB. Free memory was 175.9MB in the beginning and 172.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 10:59:13,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 112.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.41ms. Allocated memory is still 142.6MB. Free memory was 103.9MB in the beginning and 92.5MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.68ms. Allocated memory is still 142.6MB. Free memory was 92.5MB in the beginning and 90.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.94ms. Allocated memory is still 142.6MB. Free memory was 90.0MB in the beginning and 88.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 468.20ms. Allocated memory is still 142.6MB. Free memory was 88.4MB in the beginning and 66.9MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 26265.83ms. Allocated memory was 142.6MB in the beginning and 299.9MB in the end (delta: 157.3MB). Free memory was 66.6MB in the beginning and 175.9MB in the end (delta: -109.3MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. * Witness Printer took 36.69ms. Allocated memory is still 299.9MB. Free memory was 175.9MB in the beginning and 172.7MB 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: 7.4s, 254 PlacesBefore, 39 PlacesAfterwards, 264 TransitionsBefore, 29 TransitionsAfterwards, 20400 CoEnabledTransitionPairs, 7 FixpointIterations, 88 TrivialSequentialCompositions, 160 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 63 ConcurrentYvCompositions, 20 ChoiceCompositions, 334 TotalNumberOfCompositions, 19137 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19137, independent: 19137, independent conditional: 0, independent unconditional: 19137, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12336, independent: 12336, independent conditional: 0, independent unconditional: 12336, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19137, independent: 6801, independent conditional: 0, independent unconditional: 6801, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 12336, unknown conditional: 0, unknown unconditional: 12336] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 84]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 61]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 391 locations, 17 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: 26.1s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1974 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1157 mSDsluCounter, 797 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 616 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2389 IncrementalHoareTripleChecker+Invalid, 2447 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 181 mSDtfsCounter, 2389 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=10, InterpolantAutomatonStates: 56, 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 6117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 10:59:13,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b84890af-3204-4367-8c90-d6c7b603b7fd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE