./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.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_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/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_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/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_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/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 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 --- 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 15:28:54,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:28:54,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:28:54,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:28:54,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:28:54,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:28:54,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:28:54,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:28:54,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:28:54,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:28:54,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:28:54,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:28:54,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:28:54,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:28:54,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:28:54,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:28:54,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:28:54,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:28:54,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:28:54,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:28:54,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:28:54,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:28:54,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:28:54,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:28:54,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:28:54,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:28:54,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:28:54,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:28:54,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:28:54,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:28:54,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:28:54,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:28:54,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:28:54,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:28:54,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:28:54,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:28:54,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:28:54,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:28:54,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:28:54,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:28:54,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:28:54,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 15:28:54,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:28:54,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:28:54,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:28:54,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:28:54,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:28:54,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:28:54,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:28:54,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:28:54,937 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:28:54,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:28:54,938 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:28:54,938 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:28:54,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:28:54,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:28:54,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:28:54,939 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:28:54,939 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:28:54,939 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:28:54,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:28:54,940 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:28:54,940 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:28:54,940 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:28:54,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:28:54,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:28:54,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:28:54,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:28:54,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:28:54,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:28:54,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:28:54,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:28:54,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:28:54,942 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:28:54,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:28:54,943 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_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 [2022-11-25 15:28:55,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:28:55,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:28:55,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:28:55,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:28:55,325 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:28:55,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2022-11-25 15:28:58,240 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:28:58,517 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:28:58,527 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2022-11-25 15:28:58,546 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/data/3fc9ba2f5/717eca0e690b4c74b7c3c2839de937ec/FLAGe4db9a554 [2022-11-25 15:28:58,561 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/data/3fc9ba2f5/717eca0e690b4c74b7c3c2839de937ec [2022-11-25 15:28:58,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:28:58,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:28:58,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:28:58,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:28:58,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:28:58,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:28:58" (1/1) ... [2022-11-25 15:28:58,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d408674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:58, skipping insertion in model container [2022-11-25 15:28:58,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:28:58" (1/1) ... [2022-11-25 15:28:58,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:28:58,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:28:59,135 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_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2022-11-25 15:28:59,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:28:59,181 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:28:59,219 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_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2022-11-25 15:28:59,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:28:59,294 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:28:59,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59 WrapperNode [2022-11-25 15:28:59,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:28:59,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:28:59,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:28:59,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:28:59,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59" (1/1) ... [2022-11-25 15:28:59,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59" (1/1) ... [2022-11-25 15:28:59,397 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 201 [2022-11-25 15:28:59,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:28:59,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:28:59,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:28:59,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:28:59,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59" (1/1) ... [2022-11-25 15:28:59,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59" (1/1) ... [2022-11-25 15:28:59,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59" (1/1) ... [2022-11-25 15:28:59,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59" (1/1) ... [2022-11-25 15:28:59,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59" (1/1) ... [2022-11-25 15:28:59,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59" (1/1) ... [2022-11-25 15:28:59,466 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59" (1/1) ... [2022-11-25 15:28:59,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59" (1/1) ... [2022-11-25 15:28:59,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:28:59,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:28:59,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:28:59,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:28:59,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59" (1/1) ... [2022-11-25 15:28:59,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:28:59,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:59,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:28:59,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:28:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:28:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:28:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:28:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:28:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 15:28:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:28:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 15:28:59,564 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 15:28:59,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:28:59,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:28:59,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:28:59,567 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 15:28:59,735 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:28:59,753 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:29:00,232 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:29:00,246 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:29:00,246 INFO L300 CfgBuilder]: Removed 22 assume(true) statements. [2022-11-25 15:29:00,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:00 BoogieIcfgContainer [2022-11-25 15:29:00,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:29:00,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:29:00,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:29:00,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:29:00,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:28:58" (1/3) ... [2022-11-25 15:29:00,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad7f4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:29:00, skipping insertion in model container [2022-11-25 15:29:00,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:59" (2/3) ... [2022-11-25 15:29:00,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad7f4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:29:00, skipping insertion in model container [2022-11-25 15:29:00,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:00" (3/3) ... [2022-11-25 15:29:00,259 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2022-11-25 15:29:00,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:29:00,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2022-11-25 15:29:00,278 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:29:00,389 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 15:29:00,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 234 transitions, 476 flow [2022-11-25 15:29:00,573 INFO L130 PetriNetUnfolder]: 43/323 cut-off events. [2022-11-25 15:29:00,573 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:29:00,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 323 events. 43/323 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1204 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2022-11-25 15:29:00,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 234 transitions, 476 flow [2022-11-25 15:29:00,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 234 transitions, 476 flow [2022-11-25 15:29:00,606 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:29:00,646 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 234 transitions, 476 flow [2022-11-25 15:29:00,649 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 234 transitions, 476 flow [2022-11-25 15:29:00,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 234 transitions, 476 flow [2022-11-25 15:29:00,762 INFO L130 PetriNetUnfolder]: 43/323 cut-off events. [2022-11-25 15:29:00,762 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:29:00,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 323 events. 43/323 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1204 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2022-11-25 15:29:00,773 INFO L119 LiptonReduction]: Number of co-enabled transitions 12920 [2022-11-25 15:29:11,081 INFO L134 LiptonReduction]: Checked pairs total: 28226 [2022-11-25 15:29:11,081 INFO L136 LiptonReduction]: Total number of compositions: 225 [2022-11-25 15:29:11,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:29:11,110 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;@16faa92f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:29:11,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-25 15:29:11,119 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-11-25 15:29:11,119 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:11,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:11,121 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:29:11,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2022-11-25 15:29:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:11,129 INFO L85 PathProgramCache]: Analyzing trace with hash 28871, now seen corresponding path program 1 times [2022-11-25 15:29:11,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:11,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594085382] [2022-11-25 15:29:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:11,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:11,776 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 15:29:11,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:11,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594085382] [2022-11-25 15:29:11,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594085382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:11,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:11,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:29:11,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408324720] [2022-11-25 15:29:11,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:11,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:11,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:11,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:11,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:11,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 459 [2022-11-25 15:29:11,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 93 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:29:11,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:11,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 459 [2022-11-25 15:29:11,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:12,231 INFO L130 PetriNetUnfolder]: 621/1363 cut-off events. [2022-11-25 15:29:12,231 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:29:12,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 1363 events. 621/1363 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9021 event pairs, 435 based on Foata normal form. 102/999 useless extension candidates. Maximal degree in co-relation 2534. Up to 1179 conditions per place. [2022-11-25 15:29:12,241 INFO L137 encePairwiseOnDemand]: 428/459 looper letters, 73 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2022-11-25 15:29:12,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 87 transitions, 332 flow [2022-11-25 15:29:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2022-11-25 15:29:12,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5221496005809731 [2022-11-25 15:29:12,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2022-11-25 15:29:12,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2022-11-25 15:29:12,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:12,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2022-11-25 15:29:12,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 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 15:29:12,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 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 15:29:12,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 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 15:29:12,279 INFO L175 Difference]: Start difference. First operand has 71 places, 93 transitions, 194 flow. Second operand 3 states and 719 transitions. [2022-11-25 15:29:12,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 87 transitions, 332 flow [2022-11-25 15:29:12,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:29:12,286 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 150 flow [2022-11-25 15:29:12,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2022-11-25 15:29:12,292 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2022-11-25 15:29:12,292 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 150 flow [2022-11-25 15:29:12,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:29:12,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:12,293 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:29:12,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:29:12,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2022-11-25 15:29:12,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:12,294 INFO L85 PathProgramCache]: Analyzing trace with hash 28872, now seen corresponding path program 1 times [2022-11-25 15:29:12,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:12,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769984110] [2022-11-25 15:29:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:12,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:12,363 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 15:29:12,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:12,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769984110] [2022-11-25 15:29:12,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769984110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:12,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:12,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:29:12,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013617147] [2022-11-25 15:29:12,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:12,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:12,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:12,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:12,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:12,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 459 [2022-11-25 15:29:12,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 15:29:12,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:12,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 459 [2022-11-25 15:29:12,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:12,712 INFO L130 PetriNetUnfolder]: 578/1264 cut-off events. [2022-11-25 15:29:12,712 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-25 15:29:12,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2476 conditions, 1264 events. 578/1264 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8264 event pairs, 494 based on Foata normal form. 0/879 useless extension candidates. Maximal degree in co-relation 2442. Up to 1040 conditions per place. [2022-11-25 15:29:12,719 INFO L137 encePairwiseOnDemand]: 455/459 looper letters, 69 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2022-11-25 15:29:12,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 326 flow [2022-11-25 15:29:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2022-11-25 15:29:12,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4843863471314452 [2022-11-25 15:29:12,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2022-11-25 15:29:12,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2022-11-25 15:29:12,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:12,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2022-11-25 15:29:12,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 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 15:29:12,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 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 15:29:12,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 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 15:29:12,730 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 150 flow. Second operand 3 states and 667 transitions. [2022-11-25 15:29:12,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 326 flow [2022-11-25 15:29:12,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:12,735 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 146 flow [2022-11-25 15:29:12,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2022-11-25 15:29:12,736 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -5 predicate places. [2022-11-25 15:29:12,737 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 146 flow [2022-11-25 15:29:12,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 15:29:12,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:12,738 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:29:12,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:29:12,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2022-11-25 15:29:12,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash 28600, now seen corresponding path program 1 times [2022-11-25 15:29:12,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:12,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597331933] [2022-11-25 15:29:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:12,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:12,785 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 15:29:12,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:12,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597331933] [2022-11-25 15:29:12,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597331933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:12,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:12,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:29:12,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140473699] [2022-11-25 15:29:12,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:12,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:12,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:12,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:12,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:12,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 459 [2022-11-25 15:29:12,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 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 15:29:12,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:12,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 459 [2022-11-25 15:29:12,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:13,109 INFO L130 PetriNetUnfolder]: 599/1287 cut-off events. [2022-11-25 15:29:13,110 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-25 15:29:13,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2541 conditions, 1287 events. 599/1287 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8292 event pairs, 532 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 2503. Up to 1121 conditions per place. [2022-11-25 15:29:13,118 INFO L137 encePairwiseOnDemand]: 456/459 looper letters, 67 selfloop transitions, 1 changer transitions 5/84 dead transitions. [2022-11-25 15:29:13,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 332 flow [2022-11-25 15:29:13,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:13,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2022-11-25 15:29:13,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48946986201888165 [2022-11-25 15:29:13,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2022-11-25 15:29:13,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2022-11-25 15:29:13,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:13,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2022-11-25 15:29:13,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:29:13,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 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 15:29:13,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 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 15:29:13,129 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 146 flow. Second operand 3 states and 674 transitions. [2022-11-25 15:29:13,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 332 flow [2022-11-25 15:29:13,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:13,135 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 145 flow [2022-11-25 15:29:13,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2022-11-25 15:29:13,137 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -4 predicate places. [2022-11-25 15:29:13,137 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 145 flow [2022-11-25 15:29:13,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 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 15:29:13,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:13,138 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 15:29:13,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:29:13,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2022-11-25 15:29:13,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:13,139 INFO L85 PathProgramCache]: Analyzing trace with hash 860806925, now seen corresponding path program 1 times [2022-11-25 15:29:13,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:13,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897391140] [2022-11-25 15:29:13,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:13,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:13,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:13,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897391140] [2022-11-25 15:29:13,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897391140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:13,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515476565] [2022-11-25 15:29:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:13,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:13,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:13,355 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:13,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:29:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:13,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:29:13,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:13,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 114 [2022-11-25 15:29:13,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 108 [2022-11-25 15:29:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:13,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:13,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515476565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:29:13,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:29:13,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 3] total 7 [2022-11-25 15:29:13,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107299131] [2022-11-25 15:29:13,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:29:13,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:29:13,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:13,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:29:13,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:29:14,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 459 [2022-11-25 15:29:14,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 145 flow. Second operand has 9 states, 9 states have (on average 199.66666666666666) internal successors, (1797), 9 states have internal predecessors, (1797), 0 states have call successors, (0), 0 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 15:29:14,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:14,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 459 [2022-11-25 15:29:14,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:14,397 INFO L130 PetriNetUnfolder]: 39/127 cut-off events. [2022-11-25 15:29:14,397 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:14,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 127 events. 39/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 538 event pairs, 0 based on Foata normal form. 20/128 useless extension candidates. Maximal degree in co-relation 269. Up to 78 conditions per place. [2022-11-25 15:29:14,398 INFO L137 encePairwiseOnDemand]: 455/459 looper letters, 41 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2022-11-25 15:29:14,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 51 transitions, 195 flow [2022-11-25 15:29:14,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:29:14,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:29:14,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 837 transitions. [2022-11-25 15:29:14,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2022-11-25 15:29:14,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 837 transitions. [2022-11-25 15:29:14,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 837 transitions. [2022-11-25 15:29:14,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:14,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 837 transitions. [2022-11-25 15:29:14,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 15:29:14,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 459.0) internal successors, (2295), 5 states have internal predecessors, (2295), 0 states have call successors, (0), 0 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 15:29:14,412 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 459.0) internal successors, (2295), 5 states have internal predecessors, (2295), 0 states have call successors, (0), 0 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 15:29:14,413 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 145 flow. Second operand 4 states and 837 transitions. [2022-11-25 15:29:14,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 51 transitions, 195 flow [2022-11-25 15:29:14,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 51 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:14,414 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 71 flow [2022-11-25 15:29:14,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=71, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2022-11-25 15:29:14,415 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -33 predicate places. [2022-11-25 15:29:14,415 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 71 flow [2022-11-25 15:29:14,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 199.66666666666666) internal successors, (1797), 9 states have internal predecessors, (1797), 0 states have call successors, (0), 0 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 15:29:14,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:14,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:29:14,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:14,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:14,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2022-11-25 15:29:14,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:14,624 INFO L85 PathProgramCache]: Analyzing trace with hash 915140601, now seen corresponding path program 1 times [2022-11-25 15:29:14,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:14,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211671456] [2022-11-25 15:29:14,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:14,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:14,785 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 15:29:14,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:14,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211671456] [2022-11-25 15:29:14,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211671456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:14,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:14,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:29:14,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871238115] [2022-11-25 15:29:14,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:14,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:29:14,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:14,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:29:14,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:29:14,926 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 459 [2022-11-25 15:29:14,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 0 states have call successors, (0), 0 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 15:29:14,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:14,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 459 [2022-11-25 15:29:14,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:14,971 INFO L130 PetriNetUnfolder]: 35/108 cut-off events. [2022-11-25 15:29:14,972 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-25 15:29:14,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 108 events. 35/108 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 342 event pairs, 32 based on Foata normal form. 3/96 useless extension candidates. Maximal degree in co-relation 215. Up to 85 conditions per place. [2022-11-25 15:29:14,973 INFO L137 encePairwiseOnDemand]: 455/459 looper letters, 19 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-11-25 15:29:14,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 105 flow [2022-11-25 15:29:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:14,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2022-11-25 15:29:14,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4458968772694263 [2022-11-25 15:29:14,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 614 transitions. [2022-11-25 15:29:14,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 614 transitions. [2022-11-25 15:29:14,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:14,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 614 transitions. [2022-11-25 15:29:14,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 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 15:29:14,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 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 15:29:14,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 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 15:29:14,979 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 71 flow. Second operand 3 states and 614 transitions. [2022-11-25 15:29:14,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 105 flow [2022-11-25 15:29:14,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:14,981 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 64 flow [2022-11-25 15:29:14,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2022-11-25 15:29:14,988 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -36 predicate places. [2022-11-25 15:29:14,988 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 64 flow [2022-11-25 15:29:14,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 0 states have call successors, (0), 0 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 15:29:14,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:14,990 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 15:29:14,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:29:14,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2022-11-25 15:29:14,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:14,991 INFO L85 PathProgramCache]: Analyzing trace with hash 915211610, now seen corresponding path program 1 times [2022-11-25 15:29:14,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:14,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131575900] [2022-11-25 15:29:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:14,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:15,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:15,059 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:15,060 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 15:29:15,061 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2022-11-25 15:29:15,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (37 of 39 remaining) [2022-11-25 15:29:15,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 39 remaining) [2022-11-25 15:29:15,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 39 remaining) [2022-11-25 15:29:15,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 39 remaining) [2022-11-25 15:29:15,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 39 remaining) [2022-11-25 15:29:15,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 39 remaining) [2022-11-25 15:29:15,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 39 remaining) [2022-11-25 15:29:15,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 39 remaining) [2022-11-25 15:29:15,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 39 remaining) [2022-11-25 15:29:15,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 39 remaining) [2022-11-25 15:29:15,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 39 remaining) [2022-11-25 15:29:15,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 39 remaining) [2022-11-25 15:29:15,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 39 remaining) [2022-11-25 15:29:15,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 39 remaining) [2022-11-25 15:29:15,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 39 remaining) [2022-11-25 15:29:15,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (22 of 39 remaining) [2022-11-25 15:29:15,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 39 remaining) [2022-11-25 15:29:15,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 39 remaining) [2022-11-25 15:29:15,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 39 remaining) [2022-11-25 15:29:15,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 39 remaining) [2022-11-25 15:29:15,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 39 remaining) [2022-11-25 15:29:15,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 39 remaining) [2022-11-25 15:29:15,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 39 remaining) [2022-11-25 15:29:15,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 39 remaining) [2022-11-25 15:29:15,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 39 remaining) [2022-11-25 15:29:15,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 39 remaining) [2022-11-25 15:29:15,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 39 remaining) [2022-11-25 15:29:15,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 39 remaining) [2022-11-25 15:29:15,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 39 remaining) [2022-11-25 15:29:15,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 39 remaining) [2022-11-25 15:29:15,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 39 remaining) [2022-11-25 15:29:15,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 39 remaining) [2022-11-25 15:29:15,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 39 remaining) [2022-11-25 15:29:15,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 39 remaining) [2022-11-25 15:29:15,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 39 remaining) [2022-11-25 15:29:15,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 39 remaining) [2022-11-25 15:29:15,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 39 remaining) [2022-11-25 15:29:15,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 39 remaining) [2022-11-25 15:29:15,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:29:15,078 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-25 15:29:15,087 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 15:29:15,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 15:29:15,134 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 15:29:15,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 304 transitions, 626 flow [2022-11-25 15:29:15,239 INFO L130 PetriNetUnfolder]: 72/512 cut-off events. [2022-11-25 15:29:15,239 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 15:29:15,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 512 events. 72/512 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2248 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 325. Up to 12 conditions per place. [2022-11-25 15:29:15,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 304 transitions, 626 flow [2022-11-25 15:29:15,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 304 transitions, 626 flow [2022-11-25 15:29:15,252 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:29:15,252 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 304 transitions, 626 flow [2022-11-25 15:29:15,253 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 304 transitions, 626 flow [2022-11-25 15:29:15,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 304 transitions, 626 flow [2022-11-25 15:29:15,325 INFO L130 PetriNetUnfolder]: 72/512 cut-off events. [2022-11-25 15:29:15,325 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 15:29:15,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 512 events. 72/512 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2248 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 325. Up to 12 conditions per place. [2022-11-25 15:29:15,352 INFO L119 LiptonReduction]: Number of co-enabled transitions 36584 [2022-11-25 15:29:27,422 INFO L134 LiptonReduction]: Checked pairs total: 92913 [2022-11-25 15:29:27,422 INFO L136 LiptonReduction]: Total number of compositions: 286 [2022-11-25 15:29:27,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:29:27,425 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;@16faa92f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:29:27,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-11-25 15:29:27,428 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2022-11-25 15:29:27,428 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:27,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:27,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:29:27,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-25 15:29:27,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:27,429 INFO L85 PathProgramCache]: Analyzing trace with hash 49589, now seen corresponding path program 1 times [2022-11-25 15:29:27,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:27,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257731754] [2022-11-25 15:29:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:27,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:27,452 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 15:29:27,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:27,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257731754] [2022-11-25 15:29:27,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257731754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:27,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:27,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:29:27,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442532555] [2022-11-25 15:29:27,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:27,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:27,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:27,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:27,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:27,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 590 [2022-11-25 15:29:27,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 137 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 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 15:29:27,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:27,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 590 [2022-11-25 15:29:27,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:32,613 INFO L130 PetriNetUnfolder]: 28732/47452 cut-off events. [2022-11-25 15:29:32,613 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2022-11-25 15:29:32,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89987 conditions, 47452 events. 28732/47452 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 2101. Compared 409692 event pairs, 26380 based on Foata normal form. 4376/35154 useless extension candidates. Maximal degree in co-relation 36652. Up to 41036 conditions per place. [2022-11-25 15:29:32,948 INFO L137 encePairwiseOnDemand]: 547/590 looper letters, 116 selfloop transitions, 1 changer transitions 2/138 dead transitions. [2022-11-25 15:29:32,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 138 transitions, 532 flow [2022-11-25 15:29:32,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 953 transitions. [2022-11-25 15:29:32,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5384180790960452 [2022-11-25 15:29:32,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 953 transitions. [2022-11-25 15:29:32,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 953 transitions. [2022-11-25 15:29:32,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:32,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 953 transitions. [2022-11-25 15:29:32,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 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 15:29:32,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 0 states have call successors, (0), 0 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 15:29:32,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 0 states have call successors, (0), 0 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 15:29:32,962 INFO L175 Difference]: Start difference. First operand has 104 places, 137 transitions, 292 flow. Second operand 3 states and 953 transitions. [2022-11-25 15:29:32,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 138 transitions, 532 flow [2022-11-25 15:29:32,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 138 transitions, 532 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:29:32,969 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 215 flow [2022-11-25 15:29:32,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2022-11-25 15:29:32,971 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -5 predicate places. [2022-11-25 15:29:32,972 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 215 flow [2022-11-25 15:29:32,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 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 15:29:32,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:32,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:29:32,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:29:32,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-25 15:29:32,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash 49996, now seen corresponding path program 1 times [2022-11-25 15:29:32,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:32,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655305103] [2022-11-25 15:29:32,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:32,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:33,112 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 15:29:33,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:33,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655305103] [2022-11-25 15:29:33,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655305103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:33,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:33,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:29:33,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625973444] [2022-11-25 15:29:33,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:33,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:33,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:33,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:33,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:33,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 590 [2022-11-25 15:29:33,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:29:33,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:33,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 590 [2022-11-25 15:29:33,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:37,075 INFO L130 PetriNetUnfolder]: 27502/45307 cut-off events. [2022-11-25 15:29:37,076 INFO L131 PetriNetUnfolder]: For 1048/1174 co-relation queries the response was YES. [2022-11-25 15:29:37,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87425 conditions, 45307 events. 27502/45307 cut-off events. For 1048/1174 co-relation queries the response was YES. Maximal size of possible extension queue 2050. Compared 389675 event pairs, 12740 based on Foata normal form. 0/29709 useless extension candidates. Maximal degree in co-relation 84100. Up to 41138 conditions per place. [2022-11-25 15:29:37,306 INFO L137 encePairwiseOnDemand]: 586/590 looper letters, 97 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2022-11-25 15:29:37,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 119 transitions, 459 flow [2022-11-25 15:29:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-11-25 15:29:37,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49265536723163844 [2022-11-25 15:29:37,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-11-25 15:29:37,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-11-25 15:29:37,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:37,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-11-25 15:29:37,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 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 15:29:37,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 0 states have call successors, (0), 0 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 15:29:37,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 0 states have call successors, (0), 0 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 15:29:37,320 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 215 flow. Second operand 3 states and 872 transitions. [2022-11-25 15:29:37,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 119 transitions, 459 flow [2022-11-25 15:29:37,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 119 transitions, 455 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:37,484 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 225 flow [2022-11-25 15:29:37,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2022-11-25 15:29:37,486 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -4 predicate places. [2022-11-25 15:29:37,487 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 225 flow [2022-11-25 15:29:37,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:29:37,487 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:37,487 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:29:37,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:29:37,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-25 15:29:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash 49994, now seen corresponding path program 1 times [2022-11-25 15:29:37,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:37,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623343415] [2022-11-25 15:29:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:37,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:37,565 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 15:29:37,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:37,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623343415] [2022-11-25 15:29:37,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623343415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:37,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:37,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:29:37,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897070897] [2022-11-25 15:29:37,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:37,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:37,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:37,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:37,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:37,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 590 [2022-11-25 15:29:37,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 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 15:29:37,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:37,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 590 [2022-11-25 15:29:37,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:40,921 INFO L130 PetriNetUnfolder]: 26090/42807 cut-off events. [2022-11-25 15:29:40,921 INFO L131 PetriNetUnfolder]: For 1048/1048 co-relation queries the response was YES. [2022-11-25 15:29:40,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83302 conditions, 42807 events. 26090/42807 cut-off events. For 1048/1048 co-relation queries the response was YES. Maximal size of possible extension queue 2020. Compared 365914 event pairs, 22880 based on Foata normal form. 0/29186 useless extension candidates. Maximal degree in co-relation 83156. Up to 35734 conditions per place. [2022-11-25 15:29:41,128 INFO L137 encePairwiseOnDemand]: 586/590 looper letters, 113 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2022-11-25 15:29:41,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 135 transitions, 531 flow [2022-11-25 15:29:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 878 transitions. [2022-11-25 15:29:41,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.496045197740113 [2022-11-25 15:29:41,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 878 transitions. [2022-11-25 15:29:41,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 878 transitions. [2022-11-25 15:29:41,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:41,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 878 transitions. [2022-11-25 15:29:41,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 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 15:29:41,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 0 states have call successors, (0), 0 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 15:29:41,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 0 states have call successors, (0), 0 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 15:29:41,144 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 225 flow. Second operand 3 states and 878 transitions. [2022-11-25 15:29:41,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 135 transitions, 531 flow [2022-11-25 15:29:41,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 135 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:41,149 INFO L231 Difference]: Finished difference. Result has 99 places, 95 transitions, 223 flow [2022-11-25 15:29:41,149 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=99, PETRI_TRANSITIONS=95} [2022-11-25 15:29:41,152 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -5 predicate places. [2022-11-25 15:29:41,152 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 95 transitions, 223 flow [2022-11-25 15:29:41,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 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 15:29:41,153 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:41,153 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:29:41,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:29:41,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-25 15:29:41,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1034669636, now seen corresponding path program 1 times [2022-11-25 15:29:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:41,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872301374] [2022-11-25 15:29:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:41,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:41,301 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 15:29:41,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:41,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872301374] [2022-11-25 15:29:41,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872301374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:41,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:41,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:29:41,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654542317] [2022-11-25 15:29:41,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:41,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:41,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:41,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:41,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:41,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 590 [2022-11-25 15:29:41,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 95 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 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 15:29:41,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:41,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 590 [2022-11-25 15:29:41,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:43,912 INFO L130 PetriNetUnfolder]: 20283/32977 cut-off events. [2022-11-25 15:29:43,912 INFO L131 PetriNetUnfolder]: For 1040/1040 co-relation queries the response was YES. [2022-11-25 15:29:43,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64831 conditions, 32977 events. 20283/32977 cut-off events. For 1040/1040 co-relation queries the response was YES. Maximal size of possible extension queue 1485. Compared 265891 event pairs, 19040 based on Foata normal form. 1595/25592 useless extension candidates. Maximal degree in co-relation 59423. Up to 29897 conditions per place. [2022-11-25 15:29:44,095 INFO L137 encePairwiseOnDemand]: 583/590 looper letters, 69 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2022-11-25 15:29:44,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 89 transitions, 351 flow [2022-11-25 15:29:44,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-11-25 15:29:44,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4491525423728814 [2022-11-25 15:29:44,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-11-25 15:29:44,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-11-25 15:29:44,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:44,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-11-25 15:29:44,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 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 15:29:44,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 0 states have call successors, (0), 0 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 15:29:44,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 0 states have call successors, (0), 0 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 15:29:44,114 INFO L175 Difference]: Start difference. First operand has 99 places, 95 transitions, 223 flow. Second operand 3 states and 795 transitions. [2022-11-25 15:29:44,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 89 transitions, 351 flow [2022-11-25 15:29:44,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 89 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:44,143 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 209 flow [2022-11-25 15:29:44,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2022-11-25 15:29:44,144 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -11 predicate places. [2022-11-25 15:29:44,144 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 209 flow [2022-11-25 15:29:44,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 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 15:29:44,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:44,145 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:29:44,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:29:44,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-25 15:29:44,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:44,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1034992339, now seen corresponding path program 1 times [2022-11-25 15:29:44,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:44,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140280597] [2022-11-25 15:29:44,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:44,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:44,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:44,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140280597] [2022-11-25 15:29:44,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140280597] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:44,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700398882] [2022-11-25 15:29:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:44,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:44,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:44,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:44,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:29:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:29:44,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:44,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 118 [2022-11-25 15:29:44,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 108 [2022-11-25 15:29:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:44,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:44,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700398882] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:29:44,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:29:44,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 3] total 6 [2022-11-25 15:29:44,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018717890] [2022-11-25 15:29:44,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:29:44,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:29:44,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:29:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:29:45,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 590 [2022-11-25 15:29:45,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 209 flow. Second operand has 8 states, 8 states have (on average 255.5) internal successors, (2044), 8 states have internal predecessors, (2044), 0 states have call successors, (0), 0 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 15:29:45,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:45,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 590 [2022-11-25 15:29:45,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:47,616 INFO L130 PetriNetUnfolder]: 17989/29317 cut-off events. [2022-11-25 15:29:47,617 INFO L131 PetriNetUnfolder]: For 746/746 co-relation queries the response was YES. [2022-11-25 15:29:47,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58472 conditions, 29317 events. 17989/29317 cut-off events. For 746/746 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 243099 event pairs, 379 based on Foata normal form. 0/20937 useless extension candidates. Maximal degree in co-relation 58462. Up to 23785 conditions per place. [2022-11-25 15:29:47,731 INFO L137 encePairwiseOnDemand]: 586/590 looper letters, 176 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2022-11-25 15:29:47,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 201 transitions, 798 flow [2022-11-25 15:29:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:29:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:29:47,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1453 transitions. [2022-11-25 15:29:47,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49254237288135594 [2022-11-25 15:29:47,734 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1453 transitions. [2022-11-25 15:29:47,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1453 transitions. [2022-11-25 15:29:47,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:47,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1453 transitions. [2022-11-25 15:29:47,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.6) internal successors, (1453), 5 states have internal predecessors, (1453), 0 states have call successors, (0), 0 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 15:29:47,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 590.0) internal successors, (3540), 6 states have internal predecessors, (3540), 0 states have call successors, (0), 0 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 15:29:47,744 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 590.0) internal successors, (3540), 6 states have internal predecessors, (3540), 0 states have call successors, (0), 0 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 15:29:47,744 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 209 flow. Second operand 5 states and 1453 transitions. [2022-11-25 15:29:47,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 201 transitions, 798 flow [2022-11-25 15:29:47,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 201 transitions, 797 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:47,750 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 216 flow [2022-11-25 15:29:47,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2022-11-25 15:29:47,751 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -9 predicate places. [2022-11-25 15:29:47,751 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 216 flow [2022-11-25 15:29:47,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 255.5) internal successors, (2044), 8 states have internal predecessors, (2044), 0 states have call successors, (0), 0 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 15:29:47,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:47,753 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:47,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:47,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 15:29:47,958 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-25 15:29:47,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:47,958 INFO L85 PathProgramCache]: Analyzing trace with hash -2009991438, now seen corresponding path program 1 times [2022-11-25 15:29:47,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:47,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694371684] [2022-11-25 15:29:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:47,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:48,048 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 15:29:48,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:48,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694371684] [2022-11-25 15:29:48,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694371684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:48,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:48,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:29:48,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561439612] [2022-11-25 15:29:48,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:48,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:29:48,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:48,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:29:48,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:29:48,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 590 [2022-11-25 15:29:48,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 235.75) internal successors, (943), 4 states have internal predecessors, (943), 0 states have call successors, (0), 0 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 15:29:48,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:48,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 590 [2022-11-25 15:29:48,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:50,333 INFO L130 PetriNetUnfolder]: 15077/24662 cut-off events. [2022-11-25 15:29:50,333 INFO L131 PetriNetUnfolder]: For 1271/1271 co-relation queries the response was YES. [2022-11-25 15:29:50,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49338 conditions, 24662 events. 15077/24662 cut-off events. For 1271/1271 co-relation queries the response was YES. Maximal size of possible extension queue 965. Compared 187562 event pairs, 12578 based on Foata normal form. 0/20045 useless extension candidates. Maximal degree in co-relation 49327. Up to 20779 conditions per place. [2022-11-25 15:29:50,426 INFO L137 encePairwiseOnDemand]: 566/590 looper letters, 89 selfloop transitions, 15 changer transitions 0/119 dead transitions. [2022-11-25 15:29:50,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 119 transitions, 485 flow [2022-11-25 15:29:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:50,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2022-11-25 15:29:50,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4598870056497175 [2022-11-25 15:29:50,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2022-11-25 15:29:50,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2022-11-25 15:29:50,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:50,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2022-11-25 15:29:50,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 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 15:29:50,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 0 states have call successors, (0), 0 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 15:29:50,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 0 states have call successors, (0), 0 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 15:29:50,437 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 216 flow. Second operand 3 states and 814 transitions. [2022-11-25 15:29:50,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 119 transitions, 485 flow [2022-11-25 15:29:50,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 119 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:50,441 INFO L231 Difference]: Finished difference. Result has 97 places, 101 transitions, 339 flow [2022-11-25 15:29:50,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=97, PETRI_TRANSITIONS=101} [2022-11-25 15:29:50,442 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -7 predicate places. [2022-11-25 15:29:50,442 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 101 transitions, 339 flow [2022-11-25 15:29:50,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 235.75) internal successors, (943), 4 states have internal predecessors, (943), 0 states have call successors, (0), 0 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 15:29:50,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:50,443 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:50,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:29:50,443 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-25 15:29:50,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:50,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2009991064, now seen corresponding path program 1 times [2022-11-25 15:29:50,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:50,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436062089] [2022-11-25 15:29:50,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:50,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:50,554 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 15:29:50,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:50,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436062089] [2022-11-25 15:29:50,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436062089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:50,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:50,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:29:50,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476250983] [2022-11-25 15:29:50,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:50,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:29:50,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:50,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:29:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:29:50,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 590 [2022-11-25 15:29:50,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 101 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 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 15:29:50,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:50,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 590 [2022-11-25 15:29:50,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:53,140 INFO L130 PetriNetUnfolder]: 17792/30712 cut-off events. [2022-11-25 15:29:53,140 INFO L131 PetriNetUnfolder]: For 7399/7552 co-relation queries the response was YES. [2022-11-25 15:29:53,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69467 conditions, 30712 events. 17792/30712 cut-off events. For 7399/7552 co-relation queries the response was YES. Maximal size of possible extension queue 1278. Compared 260492 event pairs, 5675 based on Foata normal form. 0/26226 useless extension candidates. Maximal degree in co-relation 69454. Up to 18168 conditions per place. [2022-11-25 15:29:53,292 INFO L137 encePairwiseOnDemand]: 577/590 looper letters, 173 selfloop transitions, 21 changer transitions 0/215 dead transitions. [2022-11-25 15:29:53,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 215 transitions, 1086 flow [2022-11-25 15:29:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:29:53,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:29:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1173 transitions. [2022-11-25 15:29:53,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49703389830508476 [2022-11-25 15:29:53,296 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1173 transitions. [2022-11-25 15:29:53,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1173 transitions. [2022-11-25 15:29:53,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:53,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1173 transitions. [2022-11-25 15:29:53,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 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 15:29:53,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 590.0) internal successors, (2950), 5 states have internal predecessors, (2950), 0 states have call successors, (0), 0 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 15:29:53,304 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 590.0) internal successors, (2950), 5 states have internal predecessors, (2950), 0 states have call successors, (0), 0 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 15:29:53,304 INFO L175 Difference]: Start difference. First operand has 97 places, 101 transitions, 339 flow. Second operand 4 states and 1173 transitions. [2022-11-25 15:29:53,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 215 transitions, 1086 flow [2022-11-25 15:29:53,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 215 transitions, 1030 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:53,697 INFO L231 Difference]: Finished difference. Result has 101 places, 121 transitions, 513 flow [2022-11-25 15:29:53,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=513, PETRI_PLACES=101, PETRI_TRANSITIONS=121} [2022-11-25 15:29:53,698 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -3 predicate places. [2022-11-25 15:29:53,698 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 121 transitions, 513 flow [2022-11-25 15:29:53,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 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 15:29:53,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:53,700 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:53,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:29:53,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-25 15:29:53,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:53,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1804855758, now seen corresponding path program 1 times [2022-11-25 15:29:53,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:53,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691344524] [2022-11-25 15:29:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:53,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:53,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:53,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691344524] [2022-11-25 15:29:53,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691344524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:53,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977385698] [2022-11-25 15:29:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:53,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:53,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:53,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:53,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:29:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:54,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:29:54,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:54,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:54,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977385698] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:29:54,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:29:54,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-25 15:29:54,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218661502] [2022-11-25 15:29:54,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:29:54,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:29:54,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:29:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:29:54,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 590 [2022-11-25 15:29:54,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 121 transitions, 513 flow. Second operand has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 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 15:29:54,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:54,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 590 [2022-11-25 15:29:54,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:54,529 INFO L130 PetriNetUnfolder]: 1277/2424 cut-off events. [2022-11-25 15:29:54,529 INFO L131 PetriNetUnfolder]: For 2347/2350 co-relation queries the response was YES. [2022-11-25 15:29:54,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6800 conditions, 2424 events. 1277/2424 cut-off events. For 2347/2350 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15239 event pairs, 274 based on Foata normal form. 282/2610 useless extension candidates. Maximal degree in co-relation 6784. Up to 1524 conditions per place. [2022-11-25 15:29:54,540 INFO L137 encePairwiseOnDemand]: 587/590 looper letters, 88 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2022-11-25 15:29:54,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 102 transitions, 600 flow [2022-11-25 15:29:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:29:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:29:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1365 transitions. [2022-11-25 15:29:54,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46271186440677964 [2022-11-25 15:29:54,545 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1365 transitions. [2022-11-25 15:29:54,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1365 transitions. [2022-11-25 15:29:54,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:54,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1365 transitions. [2022-11-25 15:29:54,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 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 15:29:54,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 590.0) internal successors, (3540), 6 states have internal predecessors, (3540), 0 states have call successors, (0), 0 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 15:29:54,557 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 590.0) internal successors, (3540), 6 states have internal predecessors, (3540), 0 states have call successors, (0), 0 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 15:29:54,557 INFO L175 Difference]: Start difference. First operand has 101 places, 121 transitions, 513 flow. Second operand 5 states and 1365 transitions. [2022-11-25 15:29:54,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 102 transitions, 600 flow [2022-11-25 15:29:54,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 593 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:54,562 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 217 flow [2022-11-25 15:29:54,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2022-11-25 15:29:54,563 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -42 predicate places. [2022-11-25 15:29:54,563 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 217 flow [2022-11-25 15:29:54,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 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 15:29:54,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:54,564 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 15:29:54,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 15:29:54,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a4d038d-92f9-45e8-90b0-e4edecfed3fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 15:29:54,769 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-25 15:29:54,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:54,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1489764494, now seen corresponding path program 1 times [2022-11-25 15:29:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:54,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229797644] [2022-11-25 15:29:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:54,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:54,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:54,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:54,840 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 15:29:54,840 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 50 remaining) [2022-11-25 15:29:54,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (48 of 50 remaining) [2022-11-25 15:29:54,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2022-11-25 15:29:54,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2022-11-25 15:29:54,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2022-11-25 15:29:54,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 50 remaining) [2022-11-25 15:29:54,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2022-11-25 15:29:54,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 50 remaining) [2022-11-25 15:29:54,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2022-11-25 15:29:54,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2022-11-25 15:29:54,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2022-11-25 15:29:54,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2022-11-25 15:29:54,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2022-11-25 15:29:54,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2022-11-25 15:29:54,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2022-11-25 15:29:54,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2022-11-25 15:29:54,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (33 of 50 remaining) [2022-11-25 15:29:54,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2022-11-25 15:29:54,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2022-11-25 15:29:54,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2022-11-25 15:29:54,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 50 remaining) [2022-11-25 15:29:54,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2022-11-25 15:29:54,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2022-11-25 15:29:54,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2022-11-25 15:29:54,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 50 remaining) [2022-11-25 15:29:54,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 50 remaining) [2022-11-25 15:29:54,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 50 remaining) [2022-11-25 15:29:54,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (22 of 50 remaining) [2022-11-25 15:29:54,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2022-11-25 15:29:54,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2022-11-25 15:29:54,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2022-11-25 15:29:54,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2022-11-25 15:29:54,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2022-11-25 15:29:54,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2022-11-25 15:29:54,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2022-11-25 15:29:54,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2022-11-25 15:29:54,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2022-11-25 15:29:54,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2022-11-25 15:29:54,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 50 remaining) [2022-11-25 15:29:54,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2022-11-25 15:29:54,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2022-11-25 15:29:54,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2022-11-25 15:29:54,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2022-11-25 15:29:54,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2022-11-25 15:29:54,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2022-11-25 15:29:54,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2022-11-25 15:29:54,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2022-11-25 15:29:54,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2022-11-25 15:29:54,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2022-11-25 15:29:54,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 50 remaining) [2022-11-25 15:29:54,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 15:29:54,853 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:54,854 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 15:29:54,854 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 15:29:54,914 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 15:29:54,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 374 transitions, 778 flow [2022-11-25 15:29:55,112 INFO L130 PetriNetUnfolder]: 106/744 cut-off events. [2022-11-25 15:29:55,113 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 15:29:55,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 744 events. 106/744 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3546 event pairs, 1 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 520. Up to 16 conditions per place. [2022-11-25 15:29:55,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 374 transitions, 778 flow [2022-11-25 15:29:55,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 374 transitions, 778 flow [2022-11-25 15:29:55,137 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:29:55,138 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 326 places, 374 transitions, 778 flow [2022-11-25 15:29:55,138 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 326 places, 374 transitions, 778 flow [2022-11-25 15:29:55,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 374 transitions, 778 flow [2022-11-25 15:29:55,312 INFO L130 PetriNetUnfolder]: 106/744 cut-off events. [2022-11-25 15:29:55,312 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 15:29:55,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 744 events. 106/744 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3546 event pairs, 1 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 520. Up to 16 conditions per place. [2022-11-25 15:29:55,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 69360 [2022-11-25 15:30:07,081 INFO L134 LiptonReduction]: Checked pairs total: 172723 [2022-11-25 15:30:07,081 INFO L136 LiptonReduction]: Total number of compositions: 351 [2022-11-25 15:30:07,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:30:07,083 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;@16faa92f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:30:07,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-25 15:30:07,087 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2022-11-25 15:30:07,087 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:30:07,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:30:07,088 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:30:07,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-25 15:30:07,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:07,089 INFO L85 PathProgramCache]: Analyzing trace with hash 74956, now seen corresponding path program 1 times [2022-11-25 15:30:07,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:30:07,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865952044] [2022-11-25 15:30:07,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:07,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:30:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:07,111 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 15:30:07,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:30:07,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865952044] [2022-11-25 15:30:07,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865952044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:07,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:30:07,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:30:07,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923264320] [2022-11-25 15:30:07,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:07,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:30:07,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:30:07,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:30:07,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:30:07,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 725 [2022-11-25 15:30:07,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 176 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 15:30:07,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:30:07,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 725 [2022-11-25 15:30:07,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand