./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R --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 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 --- 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-38b53e6 [2022-11-25 18:35:10,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:35:10,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:35:10,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:35:10,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:35:10,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:35:10,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:35:10,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:35:10,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:35:10,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:35:10,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:35:10,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:35:10,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:35:10,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:35:10,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:35:10,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:35:10,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:35:10,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:35:10,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:35:10,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:35:10,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:35:10,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:35:10,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:35:10,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:35:10,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:35:10,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:35:10,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:35:10,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:35:10,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:35:10,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:35:10,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:35:10,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:35:10,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:35:10,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:35:10,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:35:10,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:35:10,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:35:10,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:35:10,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:35:10,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:35:10,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:35:10,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:35:10,779 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:35:10,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:35:10,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:35:10,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:35:10,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:35:10,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:35:10,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:35:10,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:35:10,783 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:35:10,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:35:10,783 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:35:10,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:35:10,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:35:10,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:35:10,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:35:10,785 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:35:10,785 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:35:10,785 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:35:10,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:35:10,785 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:35:10,786 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:35:10,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:35:10,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:35:10,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:35:10,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:35:10,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:35:10,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:35:10,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:35:10,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:35:10,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:35:10,790 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:35:10,791 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:35:10,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:35:10,791 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_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 [2022-11-25 18:35:11,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:35:11,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:35:11,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:35:11,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:35:11,124 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:35:11,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2022-11-25 18:35:14,312 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:35:14,585 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:35:14,586 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2022-11-25 18:35:14,607 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/data/da6d8cf24/06d5bc63b3644e0aaabee66eeb466596/FLAG8cfc15644 [2022-11-25 18:35:14,631 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/data/da6d8cf24/06d5bc63b3644e0aaabee66eeb466596 [2022-11-25 18:35:14,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:35:14,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:35:14,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:35:14,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:35:14,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:35:14,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:35:14" (1/1) ... [2022-11-25 18:35:14,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5180910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:14, skipping insertion in model container [2022-11-25 18:35:14,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:35:14" (1/1) ... [2022-11-25 18:35:14,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:35:14,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:35:14,937 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_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2022-11-25 18:35:15,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:35:15,148 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:35:15,164 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_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2022-11-25 18:35:15,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:35:15,272 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:35:15,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15 WrapperNode [2022-11-25 18:35:15,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:35:15,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:35:15,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:35:15,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:35:15,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15" (1/1) ... [2022-11-25 18:35:15,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15" (1/1) ... [2022-11-25 18:35:15,349 INFO L138 Inliner]: procedures = 163, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 104 [2022-11-25 18:35:15,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:35:15,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:35:15,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:35:15,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:35:15,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15" (1/1) ... [2022-11-25 18:35:15,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15" (1/1) ... [2022-11-25 18:35:15,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15" (1/1) ... [2022-11-25 18:35:15,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15" (1/1) ... [2022-11-25 18:35:15,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15" (1/1) ... [2022-11-25 18:35:15,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15" (1/1) ... [2022-11-25 18:35:15,397 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15" (1/1) ... [2022-11-25 18:35:15,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15" (1/1) ... [2022-11-25 18:35:15,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:35:15,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:35:15,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:35:15,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:35:15,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15" (1/1) ... [2022-11-25 18:35:15,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:35:15,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:35:15,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:35:15,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:35:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:35:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-25 18:35:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-25 18:35:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:35:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 18:35:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:35:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:35:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 18:35:15,501 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 18:35:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:35:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:35:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:35:15,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:35:15,504 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:35:15,739 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:35:15,741 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:35:16,149 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:35:16,159 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:35:16,159 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:35:16,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:35:16 BoogieIcfgContainer [2022-11-25 18:35:16,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:35:16,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:35:16,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:35:16,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:35:16,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:35:14" (1/3) ... [2022-11-25 18:35:16,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8c2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:35:16, skipping insertion in model container [2022-11-25 18:35:16,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:15" (2/3) ... [2022-11-25 18:35:16,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8c2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:35:16, skipping insertion in model container [2022-11-25 18:35:16,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:35:16" (3/3) ... [2022-11-25 18:35:16,171 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2022-11-25 18:35:16,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:35:16,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-25 18:35:16,192 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:35:16,261 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 18:35:16,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 171 transitions, 358 flow [2022-11-25 18:35:16,381 INFO L130 PetriNetUnfolder]: 4/169 cut-off events. [2022-11-25 18:35:16,381 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:35:16,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 169 events. 4/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 161 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2022-11-25 18:35:16,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 171 transitions, 358 flow [2022-11-25 18:35:16,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 164 transitions, 340 flow [2022-11-25 18:35:16,398 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:35:16,424 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 164 transitions, 340 flow [2022-11-25 18:35:16,427 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 164 transitions, 340 flow [2022-11-25 18:35:16,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 164 transitions, 340 flow [2022-11-25 18:35:16,472 INFO L130 PetriNetUnfolder]: 4/164 cut-off events. [2022-11-25 18:35:16,473 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:35:16,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 164 events. 4/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 160 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2022-11-25 18:35:16,478 INFO L119 LiptonReduction]: Number of co-enabled transitions 5652 [2022-11-25 18:35:22,862 INFO L134 LiptonReduction]: Checked pairs total: 18295 [2022-11-25 18:35:22,862 INFO L136 LiptonReduction]: Total number of compositions: 160 [2022-11-25 18:35:22,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:35:22,898 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;@f5a78cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:35:22,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-25 18:35:22,900 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 18:35:22,901 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:35:22,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:22,902 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 18:35:22,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:22,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash 588, now seen corresponding path program 1 times [2022-11-25 18:35:22,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:22,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996574102] [2022-11-25 18:35:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:22,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:23,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:23,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996574102] [2022-11-25 18:35:23,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996574102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:23,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:23,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 18:35:23,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643183432] [2022-11-25 18:35:23,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:23,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:35:23,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:23,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:35:23,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:35:23,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 331 [2022-11-25 18:35:23,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:23,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:23,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 331 [2022-11-25 18:35:23,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:23,826 INFO L130 PetriNetUnfolder]: 2783/4534 cut-off events. [2022-11-25 18:35:23,827 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-25 18:35:23,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9004 conditions, 4534 events. 2783/4534 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 23188 event pairs, 2783 based on Foata normal form. 0/4059 useless extension candidates. Maximal degree in co-relation 8844. Up to 4439 conditions per place. [2022-11-25 18:35:23,858 INFO L137 encePairwiseOnDemand]: 325/331 looper letters, 48 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2022-11-25 18:35:23,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 208 flow [2022-11-25 18:35:23,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:35:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 18:35:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 372 transitions. [2022-11-25 18:35:23,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5619335347432024 [2022-11-25 18:35:23,874 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 372 transitions. [2022-11-25 18:35:23,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 372 transitions. [2022-11-25 18:35:23,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:23,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 372 transitions. [2022-11-25 18:35:23,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 186.0) internal successors, (372), 2 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:23,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:23,890 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:23,892 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 124 flow. Second operand 2 states and 372 transitions. [2022-11-25 18:35:23,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 208 flow [2022-11-25 18:35:23,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 200 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:35:23,900 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 104 flow [2022-11-25 18:35:23,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2022-11-25 18:35:23,907 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2022-11-25 18:35:23,907 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 104 flow [2022-11-25 18:35:23,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:23,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:23,908 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:35:23,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:35:23,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:23,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:23,909 INFO L85 PathProgramCache]: Analyzing trace with hash 579884, now seen corresponding path program 1 times [2022-11-25 18:35:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:23,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500240313] [2022-11-25 18:35:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:23,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:24,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:24,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500240313] [2022-11-25 18:35:24,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500240313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:24,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:24,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:35:24,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909388072] [2022-11-25 18:35:24,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:24,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:35:24,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:35:24,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:35:24,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 331 [2022-11-25 18:35:24,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:24,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:24,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 331 [2022-11-25 18:35:24,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:24,885 INFO L130 PetriNetUnfolder]: 2768/4501 cut-off events. [2022-11-25 18:35:24,885 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:35:24,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8919 conditions, 4501 events. 2768/4501 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 22995 event pairs, 2768 based on Foata normal form. 0/4043 useless extension candidates. Maximal degree in co-relation 8916. Up to 4405 conditions per place. [2022-11-25 18:35:24,915 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 44 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2022-11-25 18:35:24,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 192 flow [2022-11-25 18:35:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:35:24,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:35:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2022-11-25 18:35:24,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.513595166163142 [2022-11-25 18:35:24,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2022-11-25 18:35:24,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2022-11-25 18:35:24,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:24,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2022-11-25 18:35:24,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:24,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:24,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:24,935 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 104 flow. Second operand 3 states and 510 transitions. [2022-11-25 18:35:24,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 192 flow [2022-11-25 18:35:24,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:35:24,937 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 104 flow [2022-11-25 18:35:24,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2022-11-25 18:35:24,939 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2022-11-25 18:35:24,939 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 104 flow [2022-11-25 18:35:24,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:24,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:24,940 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:35:24,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:35:24,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:24,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:24,942 INFO L85 PathProgramCache]: Analyzing trace with hash 579885, now seen corresponding path program 1 times [2022-11-25 18:35:24,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:24,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164449271] [2022-11-25 18:35:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:24,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:25,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:25,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164449271] [2022-11-25 18:35:25,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164449271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:25,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:25,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:35:25,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068408477] [2022-11-25 18:35:25,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:25,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:35:25,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:25,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:35:25,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:35:25,133 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 331 [2022-11-25 18:35:25,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:25,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:25,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 331 [2022-11-25 18:35:25,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:25,677 INFO L130 PetriNetUnfolder]: 2753/4468 cut-off events. [2022-11-25 18:35:25,677 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:35:25,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 4468 events. 2753/4468 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 22818 event pairs, 2753 based on Foata normal form. 0/4027 useless extension candidates. Maximal degree in co-relation 8853. Up to 4373 conditions per place. [2022-11-25 18:35:25,702 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 42 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2022-11-25 18:35:25,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 188 flow [2022-11-25 18:35:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:35:25,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:35:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2022-11-25 18:35:25,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.499496475327291 [2022-11-25 18:35:25,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2022-11-25 18:35:25,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2022-11-25 18:35:25,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:25,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2022-11-25 18:35:25,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:25,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:25,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:25,709 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 104 flow. Second operand 3 states and 496 transitions. [2022-11-25 18:35:25,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 188 flow [2022-11-25 18:35:25,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:35:25,713 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 100 flow [2022-11-25 18:35:25,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2022-11-25 18:35:25,715 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -7 predicate places. [2022-11-25 18:35:25,715 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 100 flow [2022-11-25 18:35:25,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:25,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:25,716 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:35:25,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:35:25,717 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:25,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1321700797, now seen corresponding path program 1 times [2022-11-25 18:35:25,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:25,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964842096] [2022-11-25 18:35:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:25,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:25,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:25,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964842096] [2022-11-25 18:35:25,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964842096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:25,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:25,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:35:25,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715448643] [2022-11-25 18:35:25,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:25,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:35:25,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:35:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:35:25,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-11-25 18:35:25,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:25,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:25,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-11-25 18:35:25,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:26,538 INFO L130 PetriNetUnfolder]: 4417/7122 cut-off events. [2022-11-25 18:35:26,539 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:35:26,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14180 conditions, 7122 events. 4417/7122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 40719 event pairs, 1695 based on Foata normal form. 0/6555 useless extension candidates. Maximal degree in co-relation 14176. Up to 3594 conditions per place. [2022-11-25 18:35:26,583 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 77 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2022-11-25 18:35:26,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 343 flow [2022-11-25 18:35:26,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:35:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:35:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2022-11-25 18:35:26,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5568982880161127 [2022-11-25 18:35:26,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2022-11-25 18:35:26,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2022-11-25 18:35:26,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:26,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2022-11-25 18:35:26,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:26,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:26,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:26,601 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 100 flow. Second operand 3 states and 553 transitions. [2022-11-25 18:35:26,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 343 flow [2022-11-25 18:35:26,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 337 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:35:26,604 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 134 flow [2022-11-25 18:35:26,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2022-11-25 18:35:26,606 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2022-11-25 18:35:26,606 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 134 flow [2022-11-25 18:35:26,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:26,607 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:26,607 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:35:26,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:35:26,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:26,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:26,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1221269593, now seen corresponding path program 1 times [2022-11-25 18:35:26,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:26,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019956914] [2022-11-25 18:35:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:26,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:26,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:26,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019956914] [2022-11-25 18:35:26,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019956914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:26,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:26,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:35:26,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324954896] [2022-11-25 18:35:26,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:26,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:35:26,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:26,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:35:26,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:35:26,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2022-11-25 18:35:26,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:26,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:26,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2022-11-25 18:35:26,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:27,422 INFO L130 PetriNetUnfolder]: 1983/3643 cut-off events. [2022-11-25 18:35:27,423 INFO L131 PetriNetUnfolder]: For 398/398 co-relation queries the response was YES. [2022-11-25 18:35:27,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7831 conditions, 3643 events. 1983/3643 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 22116 event pairs, 756 based on Foata normal form. 162/3493 useless extension candidates. Maximal degree in co-relation 7826. Up to 1875 conditions per place. [2022-11-25 18:35:27,441 INFO L137 encePairwiseOnDemand]: 322/331 looper letters, 77 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2022-11-25 18:35:27,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 407 flow [2022-11-25 18:35:27,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:35:27,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:35:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 688 transitions. [2022-11-25 18:35:27,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5196374622356495 [2022-11-25 18:35:27,444 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 688 transitions. [2022-11-25 18:35:27,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 688 transitions. [2022-11-25 18:35:27,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:27,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 688 transitions. [2022-11-25 18:35:27,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:27,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:27,450 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:27,450 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 134 flow. Second operand 4 states and 688 transitions. [2022-11-25 18:35:27,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 407 flow [2022-11-25 18:35:27,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 88 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:35:27,455 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 174 flow [2022-11-25 18:35:27,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2022-11-25 18:35:27,456 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2022-11-25 18:35:27,456 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 174 flow [2022-11-25 18:35:27,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:27,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:27,457 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:35:27,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:35:27,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:27,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:27,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1353788146, now seen corresponding path program 1 times [2022-11-25 18:35:27,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:27,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094822752] [2022-11-25 18:35:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:27,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:27,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:27,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094822752] [2022-11-25 18:35:27,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094822752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:27,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:27,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:35:27,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803584097] [2022-11-25 18:35:27,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:27,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:35:27,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:27,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:35:27,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:35:27,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-11-25 18:35:27,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:27,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:27,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-11-25 18:35:27,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:27,973 INFO L130 PetriNetUnfolder]: 1966/3565 cut-off events. [2022-11-25 18:35:27,973 INFO L131 PetriNetUnfolder]: For 608/608 co-relation queries the response was YES. [2022-11-25 18:35:27,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8865 conditions, 3565 events. 1966/3565 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 21939 event pairs, 543 based on Foata normal form. 0/3178 useless extension candidates. Maximal degree in co-relation 8859. Up to 2565 conditions per place. [2022-11-25 18:35:27,997 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 83 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-11-25 18:35:27,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 89 transitions, 453 flow [2022-11-25 18:35:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:35:27,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:35:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2022-11-25 18:35:28,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5448136958710977 [2022-11-25 18:35:28,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2022-11-25 18:35:28,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2022-11-25 18:35:28,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:28,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2022-11-25 18:35:28,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:28,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:28,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:28,007 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 174 flow. Second operand 3 states and 541 transitions. [2022-11-25 18:35:28,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 89 transitions, 453 flow [2022-11-25 18:35:28,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 89 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:35:28,010 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 181 flow [2022-11-25 18:35:28,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2022-11-25 18:35:28,011 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2022-11-25 18:35:28,011 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 181 flow [2022-11-25 18:35:28,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:28,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:28,012 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:35:28,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:35:28,013 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:28,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:28,013 INFO L85 PathProgramCache]: Analyzing trace with hash -332881912, now seen corresponding path program 1 times [2022-11-25 18:35:28,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:28,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76031977] [2022-11-25 18:35:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:28,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:28,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:28,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76031977] [2022-11-25 18:35:28,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76031977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:28,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:28,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:35:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115143823] [2022-11-25 18:35:28,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:28,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:35:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:35:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:35:28,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 331 [2022-11-25 18:35:28,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:28,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:28,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 331 [2022-11-25 18:35:28,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:28,807 INFO L130 PetriNetUnfolder]: 1810/3321 cut-off events. [2022-11-25 18:35:28,807 INFO L131 PetriNetUnfolder]: For 632/632 co-relation queries the response was YES. [2022-11-25 18:35:28,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8617 conditions, 3321 events. 1810/3321 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 19657 event pairs, 950 based on Foata normal form. 3/3090 useless extension candidates. Maximal degree in co-relation 8610. Up to 2010 conditions per place. [2022-11-25 18:35:28,825 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 143 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2022-11-25 18:35:28,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 150 transitions, 764 flow [2022-11-25 18:35:28,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:35:28,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:35:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1062 transitions. [2022-11-25 18:35:28,829 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5347432024169184 [2022-11-25 18:35:28,829 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1062 transitions. [2022-11-25 18:35:28,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1062 transitions. [2022-11-25 18:35:28,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:28,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1062 transitions. [2022-11-25 18:35:28,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:28,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:28,837 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:28,837 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 181 flow. Second operand 6 states and 1062 transitions. [2022-11-25 18:35:28,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 150 transitions, 764 flow [2022-11-25 18:35:28,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 150 transitions, 754 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:35:28,841 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 212 flow [2022-11-25 18:35:28,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2022-11-25 18:35:28,842 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2022-11-25 18:35:28,842 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 212 flow [2022-11-25 18:35:28,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:28,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:28,843 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:35:28,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:35:28,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:28,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:28,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1312625848, now seen corresponding path program 1 times [2022-11-25 18:35:28,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:28,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238937743] [2022-11-25 18:35:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:28,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:28,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:28,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238937743] [2022-11-25 18:35:28,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238937743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:28,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:28,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:35:28,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142825334] [2022-11-25 18:35:28,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:28,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:35:28,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:28,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:35:28,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:35:28,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 331 [2022-11-25 18:35:28,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:28,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:28,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 331 [2022-11-25 18:35:28,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:29,437 INFO L130 PetriNetUnfolder]: 1716/3542 cut-off events. [2022-11-25 18:35:29,437 INFO L131 PetriNetUnfolder]: For 2497/2508 co-relation queries the response was YES. [2022-11-25 18:35:29,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10486 conditions, 3542 events. 1716/3542 cut-off events. For 2497/2508 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 24105 event pairs, 639 based on Foata normal form. 327/3583 useless extension candidates. Maximal degree in co-relation 10475. Up to 2282 conditions per place. [2022-11-25 18:35:29,457 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 66 selfloop transitions, 27 changer transitions 0/94 dead transitions. [2022-11-25 18:35:29,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 561 flow [2022-11-25 18:35:29,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:35:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:35:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-11-25 18:35:29,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5035246727089627 [2022-11-25 18:35:29,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-11-25 18:35:29,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-11-25 18:35:29,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:29,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-11-25 18:35:29,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:29,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:29,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:29,464 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 212 flow. Second operand 3 states and 500 transitions. [2022-11-25 18:35:29,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 561 flow [2022-11-25 18:35:29,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 94 transitions, 547 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 18:35:29,479 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 389 flow [2022-11-25 18:35:29,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2022-11-25 18:35:29,480 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 4 predicate places. [2022-11-25 18:35:29,481 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 389 flow [2022-11-25 18:35:29,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:29,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:29,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:35:29,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:35:29,482 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:29,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:29,482 INFO L85 PathProgramCache]: Analyzing trace with hash 405351266, now seen corresponding path program 1 times [2022-11-25 18:35:29,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:29,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708710831] [2022-11-25 18:35:29,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:29,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:29,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:29,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708710831] [2022-11-25 18:35:29,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708710831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:29,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:29,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:35:29,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861231861] [2022-11-25 18:35:29,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:29,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:35:29,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:29,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:35:29,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:35:30,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 331 [2022-11-25 18:35:30,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:30,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:30,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 331 [2022-11-25 18:35:30,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:30,299 INFO L130 PetriNetUnfolder]: 567/1466 cut-off events. [2022-11-25 18:35:30,299 INFO L131 PetriNetUnfolder]: For 1065/1065 co-relation queries the response was YES. [2022-11-25 18:35:30,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5004 conditions, 1466 events. 567/1466 cut-off events. For 1065/1065 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9146 event pairs, 152 based on Foata normal form. 78/1492 useless extension candidates. Maximal degree in co-relation 4992. Up to 1058 conditions per place. [2022-11-25 18:35:30,308 INFO L137 encePairwiseOnDemand]: 324/331 looper letters, 61 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2022-11-25 18:35:30,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 497 flow [2022-11-25 18:35:30,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:35:30,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:35:30,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 654 transitions. [2022-11-25 18:35:30,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49395770392749244 [2022-11-25 18:35:30,311 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 654 transitions. [2022-11-25 18:35:30,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 654 transitions. [2022-11-25 18:35:30,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:30,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 654 transitions. [2022-11-25 18:35:30,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:30,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:30,336 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:30,336 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 389 flow. Second operand 4 states and 654 transitions. [2022-11-25 18:35:30,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 497 flow [2022-11-25 18:35:30,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 451 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-25 18:35:30,348 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 287 flow [2022-11-25 18:35:30,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2022-11-25 18:35:30,350 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2022-11-25 18:35:30,351 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 287 flow [2022-11-25 18:35:30,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:30,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:30,352 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:35:30,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:35:30,355 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:30,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:30,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1090299705, now seen corresponding path program 1 times [2022-11-25 18:35:30,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:30,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821012317] [2022-11-25 18:35:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:30,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:30,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:30,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821012317] [2022-11-25 18:35:30,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821012317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:30,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:30,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:35:30,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954553955] [2022-11-25 18:35:30,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:30,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:35:30,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:30,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:35:30,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:35:30,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 331 [2022-11-25 18:35:30,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 287 flow. Second operand has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:30,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:30,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 331 [2022-11-25 18:35:30,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:31,085 INFO L130 PetriNetUnfolder]: 402/1136 cut-off events. [2022-11-25 18:35:31,085 INFO L131 PetriNetUnfolder]: For 666/666 co-relation queries the response was YES. [2022-11-25 18:35:31,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 1136 events. 402/1136 cut-off events. For 666/666 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6920 event pairs, 133 based on Foata normal form. 32/1132 useless extension candidates. Maximal degree in co-relation 3577. Up to 840 conditions per place. [2022-11-25 18:35:31,090 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 72 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2022-11-25 18:35:31,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 544 flow [2022-11-25 18:35:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:35:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:35:31,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 631 transitions. [2022-11-25 18:35:31,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47658610271903323 [2022-11-25 18:35:31,093 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 631 transitions. [2022-11-25 18:35:31,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 631 transitions. [2022-11-25 18:35:31,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:31,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 631 transitions. [2022-11-25 18:35:31,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,098 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,098 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 287 flow. Second operand 4 states and 631 transitions. [2022-11-25 18:35:31,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 544 flow [2022-11-25 18:35:31,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 513 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-25 18:35:31,102 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 268 flow [2022-11-25 18:35:31,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2022-11-25 18:35:31,103 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2022-11-25 18:35:31,103 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 268 flow [2022-11-25 18:35:31,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:31,104 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:35:31,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:35:31,104 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:31,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:31,104 INFO L85 PathProgramCache]: Analyzing trace with hash -746906395, now seen corresponding path program 1 times [2022-11-25 18:35:31,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:31,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189194192] [2022-11-25 18:35:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:31,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:31,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:31,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189194192] [2022-11-25 18:35:31,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189194192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:31,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:31,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:35:31,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184121672] [2022-11-25 18:35:31,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:31,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:35:31,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:31,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:35:31,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:35:31,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 331 [2022-11-25 18:35:31,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:31,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 331 [2022-11-25 18:35:31,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:31,409 INFO L130 PetriNetUnfolder]: 322/930 cut-off events. [2022-11-25 18:35:31,409 INFO L131 PetriNetUnfolder]: For 435/439 co-relation queries the response was YES. [2022-11-25 18:35:31,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 930 events. 322/930 cut-off events. For 435/439 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5198 event pairs, 243 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 2852. Up to 894 conditions per place. [2022-11-25 18:35:31,413 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 52 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2022-11-25 18:35:31,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 362 flow [2022-11-25 18:35:31,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:35:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:35:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2022-11-25 18:35:31,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4823766364551863 [2022-11-25 18:35:31,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2022-11-25 18:35:31,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2022-11-25 18:35:31,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:31,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2022-11-25 18:35:31,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,420 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 268 flow. Second operand 3 states and 479 transitions. [2022-11-25 18:35:31,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 362 flow [2022-11-25 18:35:31,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:35:31,423 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 249 flow [2022-11-25 18:35:31,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2022-11-25 18:35:31,424 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2022-11-25 18:35:31,424 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 249 flow [2022-11-25 18:35:31,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:31,425 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:35:31,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:35:31,425 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:31,426 INFO L85 PathProgramCache]: Analyzing trace with hash -746906394, now seen corresponding path program 1 times [2022-11-25 18:35:31,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:31,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017604237] [2022-11-25 18:35:31,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:31,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:31,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:31,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017604237] [2022-11-25 18:35:31,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017604237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:31,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:31,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:35:31,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655486184] [2022-11-25 18:35:31,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:31,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:35:31,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:31,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:35:31,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:35:31,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 331 [2022-11-25 18:35:31,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:31,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 331 [2022-11-25 18:35:31,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:31,763 INFO L130 PetriNetUnfolder]: 242/720 cut-off events. [2022-11-25 18:35:31,763 INFO L131 PetriNetUnfolder]: For 274/276 co-relation queries the response was YES. [2022-11-25 18:35:31,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2137 conditions, 720 events. 242/720 cut-off events. For 274/276 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3609 event pairs, 189 based on Foata normal form. 0/720 useless extension candidates. Maximal degree in co-relation 2129. Up to 694 conditions per place. [2022-11-25 18:35:31,767 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 50 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2022-11-25 18:35:31,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 339 flow [2022-11-25 18:35:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:35:31,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:35:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2022-11-25 18:35:31,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.499496475327291 [2022-11-25 18:35:31,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2022-11-25 18:35:31,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2022-11-25 18:35:31,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:31,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2022-11-25 18:35:31,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,775 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 249 flow. Second operand 3 states and 496 transitions. [2022-11-25 18:35:31,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 339 flow [2022-11-25 18:35:31,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 335 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:35:31,778 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 235 flow [2022-11-25 18:35:31,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2022-11-25 18:35:31,779 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2022-11-25 18:35:31,779 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 235 flow [2022-11-25 18:35:31,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:31,780 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:35:31,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:35:31,780 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:31,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:31,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1490359141, now seen corresponding path program 1 times [2022-11-25 18:35:31,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:31,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314555889] [2022-11-25 18:35:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:31,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:31,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:31,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314555889] [2022-11-25 18:35:31,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314555889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:31,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:31,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:35:31,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271402758] [2022-11-25 18:35:31,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:31,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:35:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:35:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:35:31,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-11-25 18:35:31,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:31,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:31,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-11-25 18:35:31,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:32,119 INFO L130 PetriNetUnfolder]: 242/714 cut-off events. [2022-11-25 18:35:32,120 INFO L131 PetriNetUnfolder]: For 285/285 co-relation queries the response was YES. [2022-11-25 18:35:32,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2123 conditions, 714 events. 242/714 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3585 event pairs, 115 based on Foata normal form. 4/718 useless extension candidates. Maximal degree in co-relation 2115. Up to 489 conditions per place. [2022-11-25 18:35:32,123 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 71 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2022-11-25 18:35:32,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 480 flow [2022-11-25 18:35:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:35:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:35:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 680 transitions. [2022-11-25 18:35:32,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.513595166163142 [2022-11-25 18:35:32,126 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 680 transitions. [2022-11-25 18:35:32,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 680 transitions. [2022-11-25 18:35:32,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:32,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 680 transitions. [2022-11-25 18:35:32,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:32,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:32,131 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:32,131 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 235 flow. Second operand 4 states and 680 transitions. [2022-11-25 18:35:32,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 480 flow [2022-11-25 18:35:32,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 474 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:35:32,134 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 231 flow [2022-11-25 18:35:32,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2022-11-25 18:35:32,135 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2022-11-25 18:35:32,135 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 231 flow [2022-11-25 18:35:32,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:32,135 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:35:32,136 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:35:32,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:35:32,136 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:35:32,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:35:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash 880189283, now seen corresponding path program 1 times [2022-11-25 18:35:32,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:35:32,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506553126] [2022-11-25 18:35:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:35:32,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:35:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:35:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:35:32,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:32,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506553126] [2022-11-25 18:35:32,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506553126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:35:32,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:35:32,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:35:32,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798674961] [2022-11-25 18:35:32,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:35:32,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:35:32,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:35:32,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:35:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:35:32,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 331 [2022-11-25 18:35:32,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:32,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:35:32,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 331 [2022-11-25 18:35:32,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:35:32,604 INFO L130 PetriNetUnfolder]: 242/714 cut-off events. [2022-11-25 18:35:32,604 INFO L131 PetriNetUnfolder]: For 318/320 co-relation queries the response was YES. [2022-11-25 18:35:32,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2159 conditions, 714 events. 242/714 cut-off events. For 318/320 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3554 event pairs, 189 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 2152. Up to 690 conditions per place. [2022-11-25 18:35:32,607 INFO L137 encePairwiseOnDemand]: 329/331 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2022-11-25 18:35:32,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 329 flow [2022-11-25 18:35:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:35:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:35:32,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2022-11-25 18:35:32,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.500503524672709 [2022-11-25 18:35:32,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2022-11-25 18:35:32,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2022-11-25 18:35:32,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:35:32,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2022-11-25 18:35:32,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:32,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:32,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:32,614 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 231 flow. Second operand 3 states and 497 transitions. [2022-11-25 18:35:32,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 329 flow [2022-11-25 18:35:32,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 323 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:35:32,617 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2022-11-25 18:35:32,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2022-11-25 18:35:32,618 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -6 predicate places. [2022-11-25 18:35:32,618 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2022-11-25 18:35:32,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:35:32,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2022-11-25 18:35:32,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2022-11-25 18:35:32,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2022-11-25 18:35:32,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2022-11-25 18:35:32,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (10 of 15 remaining) [2022-11-25 18:35:32,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (9 of 15 remaining) [2022-11-25 18:35:32,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2022-11-25 18:35:32,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 15 remaining) [2022-11-25 18:35:32,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2022-11-25 18:35:32,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2022-11-25 18:35:32,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2022-11-25 18:35:32,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2022-11-25 18:35:32,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2022-11-25 18:35:32,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2022-11-25 18:35:32,625 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 15 remaining) [2022-11-25 18:35:32,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:35:32,625 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:35:32,629 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 18:35:32,629 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:35:32,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:35:32 BasicIcfg [2022-11-25 18:35:32,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:35:32,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:35:32,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:35:32,634 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:35:32,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:35:16" (3/4) ... [2022-11-25 18:35:32,637 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:35:32,644 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2022-11-25 18:35:32,644 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-25 18:35:32,652 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-25 18:35:32,653 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 18:35:32,653 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 18:35:32,653 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:35:32,702 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:35:32,703 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:35:32,703 INFO L158 Benchmark]: Toolchain (without parser) took 18065.70ms. Allocated memory was 136.3MB in the beginning and 444.6MB in the end (delta: 308.3MB). Free memory was 72.5MB in the beginning and 127.2MB in the end (delta: -54.8MB). Peak memory consumption was 255.5MB. Max. memory is 16.1GB. [2022-11-25 18:35:32,703 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 136.3MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:35:32,704 INFO L158 Benchmark]: CACSL2BoogieTranslator took 634.78ms. Allocated memory was 136.3MB in the beginning and 188.7MB in the end (delta: 52.4MB). Free memory was 72.3MB in the beginning and 142.4MB in the end (delta: -70.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 18:35:32,704 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.98ms. Allocated memory is still 188.7MB. Free memory was 142.4MB in the beginning and 140.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:35:32,705 INFO L158 Benchmark]: Boogie Preprocessor took 51.21ms. Allocated memory is still 188.7MB. Free memory was 140.4MB in the beginning and 138.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:35:32,705 INFO L158 Benchmark]: RCFGBuilder took 759.40ms. Allocated memory is still 188.7MB. Free memory was 138.9MB in the beginning and 120.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 18:35:32,705 INFO L158 Benchmark]: TraceAbstraction took 16468.84ms. Allocated memory was 188.7MB in the beginning and 444.6MB in the end (delta: 255.9MB). Free memory was 119.4MB in the beginning and 130.4MB in the end (delta: -11.0MB). Peak memory consumption was 247.7MB. Max. memory is 16.1GB. [2022-11-25 18:35:32,706 INFO L158 Benchmark]: Witness Printer took 69.52ms. Allocated memory is still 444.6MB. Free memory was 130.4MB in the beginning and 127.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:35:32,709 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 136.3MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 634.78ms. Allocated memory was 136.3MB in the beginning and 188.7MB in the end (delta: 52.4MB). Free memory was 72.3MB in the beginning and 142.4MB in the end (delta: -70.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.98ms. Allocated memory is still 188.7MB. Free memory was 142.4MB in the beginning and 140.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.21ms. Allocated memory is still 188.7MB. Free memory was 140.4MB in the beginning and 138.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 759.40ms. Allocated memory is still 188.7MB. Free memory was 138.9MB in the beginning and 120.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 16468.84ms. Allocated memory was 188.7MB in the beginning and 444.6MB in the end (delta: 255.9MB). Free memory was 119.4MB in the beginning and 130.4MB in the end (delta: -11.0MB). Peak memory consumption was 247.7MB. Max. memory is 16.1GB. * Witness Printer took 69.52ms. Allocated memory is still 444.6MB. Free memory was 130.4MB in the beginning and 127.2MB 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: 6.4s, 167 PlacesBefore, 59 PlacesAfterwards, 164 TransitionsBefore, 56 TransitionsAfterwards, 5652 CoEnabledTransitionPairs, 8 FixpointIterations, 58 TrivialSequentialCompositions, 84 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 0 ChoiceCompositions, 160 TotalNumberOfCompositions, 18295 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7295, independent: 6839, independent conditional: 0, independent unconditional: 6839, dependent: 456, dependent conditional: 0, dependent unconditional: 456, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3838, independent: 3711, independent conditional: 0, independent unconditional: 3711, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3838, independent: 3447, independent conditional: 0, independent unconditional: 3447, dependent: 391, dependent conditional: 0, dependent unconditional: 391, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 391, independent: 264, independent conditional: 0, independent unconditional: 264, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 623, independent: 356, independent conditional: 0, independent unconditional: 356, dependent: 267, dependent conditional: 0, dependent unconditional: 267, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7295, independent: 3128, independent conditional: 0, independent unconditional: 3128, dependent: 329, dependent conditional: 0, dependent unconditional: 329, unknown: 3838, unknown conditional: 0, unknown unconditional: 3838] , Statistics on independence cache: Total cache size (in pairs): 527, Positive cache size: 470, Positive conditional cache size: 0, Positive unconditional cache size: 470, Negative cache size: 57, Negative conditional cache size: 0, Negative unconditional cache size: 57, 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 707]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 208 locations, 15 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: 16.3s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1385 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 880 mSDsluCounter, 124 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 269 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2254 IncrementalHoareTripleChecker+Invalid, 2523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 269 mSolverCounterUnsat, 92 mSDtfsCounter, 2254 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=8, InterpolantAutomatonStates: 48, 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, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 1552 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 18:35:32,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6114a7-4cb2-4eda-98e3-518cc3078f7a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE