./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:01:44,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:01:44,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:01:44,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:01:44,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:01:44,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:01:44,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:01:44,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:01:44,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:01:44,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:01:44,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:01:44,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:01:44,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:01:44,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:01:44,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:01:44,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:01:44,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:01:44,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:01:44,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:01:44,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:01:44,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:01:44,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:01:44,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:01:44,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:01:44,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:01:44,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:01:44,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:01:44,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:01:44,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:01:44,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:01:44,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:01:44,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:01:44,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:01:44,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:01:44,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:01:44,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:01:44,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:01:44,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:01:44,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:01:44,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:01:44,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:01:44,364 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 21:01:44,382 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:01:44,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:01:44,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:01:44,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:01:44,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:01:44,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:01:44,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:01:44,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:01:44,401 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:01:44,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:01:44,401 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:01:44,402 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:01:44,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:01:44,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:01:44,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:01:44,402 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:01:44,402 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:01:44,402 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:01:44,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:01:44,402 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:01:44,402 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:01:44,402 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:01:44,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:01:44,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:01:44,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:01:44,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:01:44,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:01:44,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:01:44,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:01:44,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:01:44,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:01:44,403 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:01:44,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:01:44,404 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:01:44,404 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_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf [2022-12-13 21:01:44,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:01:44,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:01:44,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:01:44,581 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:01:44,581 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:01:44,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2022-12-13 21:01:47,084 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:01:47,296 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:01:47,297 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2022-12-13 21:01:47,309 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/data/a35779dc6/0191a7f2e30d44c0927abe3e61d4bfa5/FLAGe2ced2002 [2022-12-13 21:01:47,649 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/data/a35779dc6/0191a7f2e30d44c0927abe3e61d4bfa5 [2022-12-13 21:01:47,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:01:47,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:01:47,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:01:47,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:01:47,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:01:47,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:47,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3e2ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47, skipping insertion in model container [2022-12-13 21:01:47,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:47,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:01:47,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:01:47,807 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_eb7725be-dfe9-4e71-98ff-76675a0d35bd/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2022-12-13 21:01:47,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:01:47,905 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:01:47,913 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_eb7725be-dfe9-4e71-98ff-76675a0d35bd/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2022-12-13 21:01:47,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:01:47,954 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:01:47,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47 WrapperNode [2022-12-13 21:01:47,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:01:47,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:01:47,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:01:47,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:01:47,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:47,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:47,996 INFO L138 Inliner]: procedures = 162, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2022-12-13 21:01:47,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:01:47,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:01:47,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:01:47,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:01:48,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:48,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:48,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:48,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:48,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:48,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:48,012 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:48,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:48,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:01:48,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:01:48,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:01:48,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:01:48,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47" (1/1) ... [2022-12-13 21:01:48,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:01:48,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:01:48,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:01:48,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:01:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:01:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:01:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 21:01:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:01:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:01:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 21:01:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 21:01:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:01:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:01:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:01:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:01:48,085 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:01:48,178 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:01:48,179 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:01:48,381 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:01:48,387 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:01:48,387 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 21:01:48,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:01:48 BoogieIcfgContainer [2022-12-13 21:01:48,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:01:48,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:01:48,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:01:48,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:01:48,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:01:47" (1/3) ... [2022-12-13 21:01:48,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317a2102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:01:48, skipping insertion in model container [2022-12-13 21:01:48,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:01:47" (2/3) ... [2022-12-13 21:01:48,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317a2102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:01:48, skipping insertion in model container [2022-12-13 21:01:48,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:01:48" (3/3) ... [2022-12-13 21:01:48,395 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2022-12-13 21:01:48,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:01:48,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-12-13 21:01:48,410 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:01:48,458 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 21:01:48,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 151 transitions, 310 flow [2022-12-13 21:01:48,528 INFO L130 PetriNetUnfolder]: 4/150 cut-off events. [2022-12-13 21:01:48,528 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:01:48,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 150 events. 4/150 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 126 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2022-12-13 21:01:48,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 151 transitions, 310 flow [2022-12-13 21:01:48,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 145 transitions, 296 flow [2022-12-13 21:01:48,539 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:01:48,547 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 145 transitions, 296 flow [2022-12-13 21:01:48,549 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 145 transitions, 296 flow [2022-12-13 21:01:48,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 145 transitions, 296 flow [2022-12-13 21:01:48,574 INFO L130 PetriNetUnfolder]: 4/145 cut-off events. [2022-12-13 21:01:48,574 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:01:48,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 145 events. 4/145 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 125 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2022-12-13 21:01:48,577 INFO L119 LiptonReduction]: Number of co-enabled transitions 4158 [2022-12-13 21:01:51,549 INFO L134 LiptonReduction]: Checked pairs total: 12469 [2022-12-13 21:01:51,550 INFO L136 LiptonReduction]: Total number of compositions: 127 [2022-12-13 21:01:51,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:01:51,569 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;@7ceb7762, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:01:51,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 21:01:51,570 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 21:01:51,571 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:01:51,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:51,571 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 21:01:51,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:51,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:51,576 INFO L85 PathProgramCache]: Analyzing trace with hash 515, now seen corresponding path program 1 times [2022-12-13 21:01:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:51,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593431572] [2022-12-13 21:01:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:51,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:51,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593431572] [2022-12-13 21:01:51,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593431572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:51,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:51,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 21:01:51,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309551835] [2022-12-13 21:01:51,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:51,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:01:51,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:51,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:01:51,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:01:51,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 278 [2022-12-13 21:01:51,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:51,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:51,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 278 [2022-12-13 21:01:51,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:51,816 INFO L130 PetriNetUnfolder]: 276/634 cut-off events. [2022-12-13 21:01:51,816 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:01:51,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1231 conditions, 634 events. 276/634 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2874 event pairs, 276 based on Foata normal form. 26/547 useless extension candidates. Maximal degree in co-relation 1217. Up to 592 conditions per place. [2022-12-13 21:01:51,821 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 37 selfloop transitions, 0 changer transitions 2/44 dead transitions. [2022-12-13 21:01:51,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 172 flow [2022-12-13 21:01:51,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:01:51,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:01:51,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 326 transitions. [2022-12-13 21:01:51,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5863309352517986 [2022-12-13 21:01:51,835 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 326 transitions. [2022-12-13 21:01:51,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 326 transitions. [2022-12-13 21:01:51,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:51,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 326 transitions. [2022-12-13 21:01:51,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 163.0) internal successors, (326), 2 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:51,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:51,848 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:51,849 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 106 flow. Second operand 2 states and 326 transitions. [2022-12-13 21:01:51,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 172 flow [2022-12-13 21:01:51,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:01:51,854 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 86 flow [2022-12-13 21:01:51,856 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2022-12-13 21:01:51,859 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2022-12-13 21:01:51,860 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 86 flow [2022-12-13 21:01:51,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:51,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:51,860 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:01:51,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:01:51,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:51,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:51,862 INFO L85 PathProgramCache]: Analyzing trace with hash 484806397, now seen corresponding path program 1 times [2022-12-13 21:01:51,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:51,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029334499] [2022-12-13 21:01:51,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:51,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:52,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:52,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029334499] [2022-12-13 21:01:52,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029334499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:52,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:52,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:01:52,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915732100] [2022-12-13 21:01:52,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:52,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:01:52,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:52,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:01:52,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:01:52,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 278 [2022-12-13 21:01:52,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:52,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 278 [2022-12-13 21:01:52,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:52,157 INFO L130 PetriNetUnfolder]: 243/606 cut-off events. [2022-12-13 21:01:52,157 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:01:52,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 606 events. 243/606 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2840 event pairs, 63 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 1130. Up to 430 conditions per place. [2022-12-13 21:01:52,161 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 53 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2022-12-13 21:01:52,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 232 flow [2022-12-13 21:01:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:01:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:01:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2022-12-13 21:01:52,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.565947242206235 [2022-12-13 21:01:52,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2022-12-13 21:01:52,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2022-12-13 21:01:52,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:52,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2022-12-13 21:01:52,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,167 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 86 flow. Second operand 3 states and 472 transitions. [2022-12-13 21:01:52,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 232 flow [2022-12-13 21:01:52,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 232 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:01:52,169 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 98 flow [2022-12-13 21:01:52,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2022-12-13 21:01:52,169 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2022-12-13 21:01:52,170 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 98 flow [2022-12-13 21:01:52,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:52,170 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:01:52,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:01:52,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:52,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1452568805, now seen corresponding path program 1 times [2022-12-13 21:01:52,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:52,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466043957] [2022-12-13 21:01:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:52,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:52,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:52,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466043957] [2022-12-13 21:01:52,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466043957] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:52,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:52,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:01:52,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549893206] [2022-12-13 21:01:52,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:52,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:01:52,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:52,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:01:52,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:01:52,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 278 [2022-12-13 21:01:52,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:52,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 278 [2022-12-13 21:01:52,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:52,446 INFO L130 PetriNetUnfolder]: 397/849 cut-off events. [2022-12-13 21:01:52,447 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-13 21:01:52,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 849 events. 397/849 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3912 event pairs, 208 based on Foata normal form. 6/795 useless extension candidates. Maximal degree in co-relation 1810. Up to 690 conditions per place. [2022-12-13 21:01:52,453 INFO L137 encePairwiseOnDemand]: 262/278 looper letters, 62 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2022-12-13 21:01:52,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 78 transitions, 335 flow [2022-12-13 21:01:52,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:01:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:01:52,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2022-12-13 21:01:52,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5491606714628298 [2022-12-13 21:01:52,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2022-12-13 21:01:52,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2022-12-13 21:01:52,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:52,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2022-12-13 21:01:52,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,458 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 98 flow. Second operand 3 states and 458 transitions. [2022-12-13 21:01:52,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 78 transitions, 335 flow [2022-12-13 21:01:52,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 78 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:01:52,460 INFO L231 Difference]: Finished difference. Result has 49 places, 56 transitions, 198 flow [2022-12-13 21:01:52,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=49, PETRI_TRANSITIONS=56} [2022-12-13 21:01:52,461 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2022-12-13 21:01:52,461 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 56 transitions, 198 flow [2022-12-13 21:01:52,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:52,462 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:01:52,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:01:52,462 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:52,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:52,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1252447825, now seen corresponding path program 1 times [2022-12-13 21:01:52,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:52,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477016271] [2022-12-13 21:01:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:52,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:52,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:52,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477016271] [2022-12-13 21:01:52,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477016271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:52,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:52,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:01:52,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126758303] [2022-12-13 21:01:52,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:52,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:01:52,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:52,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:01:52,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:01:52,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 278 [2022-12-13 21:01:52,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 56 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:52,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 278 [2022-12-13 21:01:52,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:52,750 INFO L130 PetriNetUnfolder]: 237/573 cut-off events. [2022-12-13 21:01:52,750 INFO L131 PetriNetUnfolder]: For 116/124 co-relation queries the response was YES. [2022-12-13 21:01:52,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 573 events. 237/573 cut-off events. For 116/124 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2780 event pairs, 80 based on Foata normal form. 15/533 useless extension candidates. Maximal degree in co-relation 1440. Up to 301 conditions per place. [2022-12-13 21:01:52,752 INFO L137 encePairwiseOnDemand]: 269/278 looper letters, 66 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2022-12-13 21:01:52,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 84 transitions, 426 flow [2022-12-13 21:01:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:01:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:01:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 606 transitions. [2022-12-13 21:01:52,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5449640287769785 [2022-12-13 21:01:52,754 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 606 transitions. [2022-12-13 21:01:52,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 606 transitions. [2022-12-13 21:01:52,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:52,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 606 transitions. [2022-12-13 21:01:52,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,757 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,757 INFO L175 Difference]: Start difference. First operand has 49 places, 56 transitions, 198 flow. Second operand 4 states and 606 transitions. [2022-12-13 21:01:52,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 84 transitions, 426 flow [2022-12-13 21:01:52,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 84 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:01:52,760 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 236 flow [2022-12-13 21:01:52,760 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2022-12-13 21:01:52,760 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2022-12-13 21:01:52,760 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 236 flow [2022-12-13 21:01:52,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:52,761 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:01:52,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:01:52,761 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:52,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:52,761 INFO L85 PathProgramCache]: Analyzing trace with hash 680884395, now seen corresponding path program 1 times [2022-12-13 21:01:52,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:52,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425804911] [2022-12-13 21:01:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:52,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:52,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425804911] [2022-12-13 21:01:52,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425804911] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:52,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:52,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:01:52,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103691816] [2022-12-13 21:01:52,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:52,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:01:52,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:52,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:01:52,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:01:52,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 278 [2022-12-13 21:01:52,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:52,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 278 [2022-12-13 21:01:52,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:52,928 INFO L130 PetriNetUnfolder]: 265/654 cut-off events. [2022-12-13 21:01:52,928 INFO L131 PetriNetUnfolder]: For 196/201 co-relation queries the response was YES. [2022-12-13 21:01:52,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 654 events. 265/654 cut-off events. For 196/201 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3180 event pairs, 105 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 1816. Up to 310 conditions per place. [2022-12-13 21:01:52,930 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 71 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2022-12-13 21:01:52,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 84 transitions, 483 flow [2022-12-13 21:01:52,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:01:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:01:52,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2022-12-13 21:01:52,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5731414868105515 [2022-12-13 21:01:52,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2022-12-13 21:01:52,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2022-12-13 21:01:52,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:52,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2022-12-13 21:01:52,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,934 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 236 flow. Second operand 3 states and 478 transitions. [2022-12-13 21:01:52,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 84 transitions, 483 flow [2022-12-13 21:01:52,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 84 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:01:52,936 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 261 flow [2022-12-13 21:01:52,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2022-12-13 21:01:52,937 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2022-12-13 21:01:52,937 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 261 flow [2022-12-13 21:01:52,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:52,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:52,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:01:52,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:01:52,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:52,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:52,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2020240079, now seen corresponding path program 1 times [2022-12-13 21:01:52,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:52,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438148987] [2022-12-13 21:01:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:52,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:53,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:53,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438148987] [2022-12-13 21:01:53,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438148987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:53,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:53,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:01:53,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404874983] [2022-12-13 21:01:53,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:53,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:01:53,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:53,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:01:53,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:01:53,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 278 [2022-12-13 21:01:53,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:53,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 278 [2022-12-13 21:01:53,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:53,131 INFO L130 PetriNetUnfolder]: 235/598 cut-off events. [2022-12-13 21:01:53,131 INFO L131 PetriNetUnfolder]: For 257/261 co-relation queries the response was YES. [2022-12-13 21:01:53,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 598 events. 235/598 cut-off events. For 257/261 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2823 event pairs, 185 based on Foata normal form. 36/576 useless extension candidates. Maximal degree in co-relation 1759. Up to 478 conditions per place. [2022-12-13 21:01:53,136 INFO L137 encePairwiseOnDemand]: 272/278 looper letters, 55 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2022-12-13 21:01:53,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 67 transitions, 423 flow [2022-12-13 21:01:53,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:01:53,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:01:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 596 transitions. [2022-12-13 21:01:53,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5359712230215827 [2022-12-13 21:01:53,137 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 596 transitions. [2022-12-13 21:01:53,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 596 transitions. [2022-12-13 21:01:53,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:53,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 596 transitions. [2022-12-13 21:01:53,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.0) internal successors, (596), 4 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) [2022-12-13 21:01:53,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,140 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 261 flow. Second operand 4 states and 596 transitions. [2022-12-13 21:01:53,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 67 transitions, 423 flow [2022-12-13 21:01:53,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 67 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:01:53,142 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 256 flow [2022-12-13 21:01:53,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2022-12-13 21:01:53,143 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2022-12-13 21:01:53,143 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 256 flow [2022-12-13 21:01:53,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:53,143 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:01:53,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:01:53,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:53,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:53,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1277072883, now seen corresponding path program 1 times [2022-12-13 21:01:53,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:53,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641746912] [2022-12-13 21:01:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:53,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:53,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:53,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641746912] [2022-12-13 21:01:53,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641746912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:53,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:53,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:01:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326308594] [2022-12-13 21:01:53,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:53,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:01:53,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:01:53,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:01:53,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 278 [2022-12-13 21:01:53,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:53,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 278 [2022-12-13 21:01:53,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:53,298 INFO L130 PetriNetUnfolder]: 211/542 cut-off events. [2022-12-13 21:01:53,298 INFO L131 PetriNetUnfolder]: For 197/201 co-relation queries the response was YES. [2022-12-13 21:01:53,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 542 events. 211/542 cut-off events. For 197/201 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2475 event pairs, 180 based on Foata normal form. 0/504 useless extension candidates. Maximal degree in co-relation 1568. Up to 475 conditions per place. [2022-12-13 21:01:53,302 INFO L137 encePairwiseOnDemand]: 275/278 looper letters, 43 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-12-13 21:01:53,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 326 flow [2022-12-13 21:01:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:01:53,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:01:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-12-13 21:01:53,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5203836930455635 [2022-12-13 21:01:53,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-12-13 21:01:53,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-12-13 21:01:53,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:53,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-12-13 21:01:53,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,309 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 256 flow. Second operand 3 states and 434 transitions. [2022-12-13 21:01:53,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 326 flow [2022-12-13 21:01:53,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 316 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-13 21:01:53,310 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 230 flow [2022-12-13 21:01:53,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=52, PETRI_TRANSITIONS=54} [2022-12-13 21:01:53,311 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2022-12-13 21:01:53,311 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 230 flow [2022-12-13 21:01:53,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:53,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:01:53,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:01:53,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:53,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:53,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1277072882, now seen corresponding path program 1 times [2022-12-13 21:01:53,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:53,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977597890] [2022-12-13 21:01:53,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:53,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:53,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:53,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977597890] [2022-12-13 21:01:53,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977597890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:53,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:53,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:01:53,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708476792] [2022-12-13 21:01:53,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:53,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:01:53,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:53,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:01:53,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:01:53,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 278 [2022-12-13 21:01:53,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:53,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 278 [2022-12-13 21:01:53,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:53,484 INFO L130 PetriNetUnfolder]: 187/488 cut-off events. [2022-12-13 21:01:53,484 INFO L131 PetriNetUnfolder]: For 170/174 co-relation queries the response was YES. [2022-12-13 21:01:53,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 488 events. 187/488 cut-off events. For 170/174 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2155 event pairs, 162 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 1352. Up to 429 conditions per place. [2022-12-13 21:01:53,486 INFO L137 encePairwiseOnDemand]: 275/278 looper letters, 40 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2022-12-13 21:01:53,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 294 flow [2022-12-13 21:01:53,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:01:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:01:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-12-13 21:01:53,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5299760191846523 [2022-12-13 21:01:53,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-12-13 21:01:53,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-12-13 21:01:53,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:53,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-12-13 21:01:53,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,489 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 230 flow. Second operand 3 states and 442 transitions. [2022-12-13 21:01:53,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 294 flow [2022-12-13 21:01:53,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:01:53,491 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 210 flow [2022-12-13 21:01:53,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2022-12-13 21:01:53,491 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2022-12-13 21:01:53,491 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 210 flow [2022-12-13 21:01:53,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:53,492 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:01:53,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:01:53,492 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:53,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:53,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1276877319, now seen corresponding path program 1 times [2022-12-13 21:01:53,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:53,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568326087] [2022-12-13 21:01:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:53,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:53,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:53,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568326087] [2022-12-13 21:01:53,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568326087] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:53,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:53,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:01:53,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757542056] [2022-12-13 21:01:53,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:53,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:01:53,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:53,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:01:53,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:01:53,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 278 [2022-12-13 21:01:53,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:53,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 278 [2022-12-13 21:01:53,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:53,680 INFO L130 PetriNetUnfolder]: 126/407 cut-off events. [2022-12-13 21:01:53,680 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-12-13 21:01:53,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 407 events. 126/407 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1821 event pairs, 40 based on Foata normal form. 49/451 useless extension candidates. Maximal degree in co-relation 1207. Up to 227 conditions per place. [2022-12-13 21:01:53,683 INFO L137 encePairwiseOnDemand]: 258/278 looper letters, 52 selfloop transitions, 29 changer transitions 0/81 dead transitions. [2022-12-13 21:01:53,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 508 flow [2022-12-13 21:01:53,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:01:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:01:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-12-13 21:01:53,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5167865707434053 [2022-12-13 21:01:53,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-12-13 21:01:53,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-12-13 21:01:53,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:53,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-12-13 21:01:53,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,687 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 210 flow. Second operand 3 states and 431 transitions. [2022-12-13 21:01:53,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 508 flow [2022-12-13 21:01:53,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:01:53,689 INFO L231 Difference]: Finished difference. Result has 52 places, 67 transitions, 411 flow [2022-12-13 21:01:53,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=52, PETRI_TRANSITIONS=67} [2022-12-13 21:01:53,689 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2022-12-13 21:01:53,690 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 67 transitions, 411 flow [2022-12-13 21:01:53,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,690 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:53,690 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:01:53,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:01:53,690 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:53,690 INFO L85 PathProgramCache]: Analyzing trace with hash -928561275, now seen corresponding path program 1 times [2022-12-13 21:01:53,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:53,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028737489] [2022-12-13 21:01:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:53,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:53,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:53,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028737489] [2022-12-13 21:01:53,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028737489] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:53,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:53,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:01:53,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798063871] [2022-12-13 21:01:53,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:53,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:01:53,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:53,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:01:53,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:01:53,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 278 [2022-12-13 21:01:53,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 67 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:53,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:53,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 278 [2022-12-13 21:01:53,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:54,086 INFO L130 PetriNetUnfolder]: 103/345 cut-off events. [2022-12-13 21:01:54,087 INFO L131 PetriNetUnfolder]: For 310/310 co-relation queries the response was YES. [2022-12-13 21:01:54,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 345 events. 103/345 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1485 event pairs, 33 based on Foata normal form. 4/344 useless extension candidates. Maximal degree in co-relation 1301. Up to 294 conditions per place. [2022-12-13 21:01:54,088 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 61 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2022-12-13 21:01:54,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 519 flow [2022-12-13 21:01:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:01:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:01:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2022-12-13 21:01:54,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48741007194244607 [2022-12-13 21:01:54,091 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2022-12-13 21:01:54,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2022-12-13 21:01:54,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:54,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2022-12-13 21:01:54,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,094 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,094 INFO L175 Difference]: Start difference. First operand has 52 places, 67 transitions, 411 flow. Second operand 4 states and 542 transitions. [2022-12-13 21:01:54,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 519 flow [2022-12-13 21:01:54,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 482 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 21:01:54,097 INFO L231 Difference]: Finished difference. Result has 52 places, 56 transitions, 306 flow [2022-12-13 21:01:54,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=52, PETRI_TRANSITIONS=56} [2022-12-13 21:01:54,097 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2022-12-13 21:01:54,098 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 56 transitions, 306 flow [2022-12-13 21:01:54,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:54,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:01:54,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:01:54,098 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:54,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2121526014, now seen corresponding path program 1 times [2022-12-13 21:01:54,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:54,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690672277] [2022-12-13 21:01:54,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:54,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:54,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:54,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690672277] [2022-12-13 21:01:54,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690672277] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:54,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:54,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:01:54,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131371321] [2022-12-13 21:01:54,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:54,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:01:54,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:54,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:01:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:01:54,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 278 [2022-12-13 21:01:54,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 56 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:54,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 278 [2022-12-13 21:01:54,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:54,444 INFO L130 PetriNetUnfolder]: 37/195 cut-off events. [2022-12-13 21:01:54,444 INFO L131 PetriNetUnfolder]: For 211/211 co-relation queries the response was YES. [2022-12-13 21:01:54,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 195 events. 37/195 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 662 event pairs, 7 based on Foata normal form. 14/207 useless extension candidates. Maximal degree in co-relation 690. Up to 121 conditions per place. [2022-12-13 21:01:54,445 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 50 selfloop transitions, 11 changer transitions 0/61 dead transitions. [2022-12-13 21:01:54,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 452 flow [2022-12-13 21:01:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:01:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:01:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2022-12-13 21:01:54,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48830935251798563 [2022-12-13 21:01:54,447 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 543 transitions. [2022-12-13 21:01:54,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 543 transitions. [2022-12-13 21:01:54,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:54,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 543 transitions. [2022-12-13 21:01:54,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,451 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,451 INFO L175 Difference]: Start difference. First operand has 52 places, 56 transitions, 306 flow. Second operand 4 states and 543 transitions. [2022-12-13 21:01:54,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 452 flow [2022-12-13 21:01:54,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 422 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 21:01:54,454 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 276 flow [2022-12-13 21:01:54,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2022-12-13 21:01:54,455 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2022-12-13 21:01:54,455 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 276 flow [2022-12-13 21:01:54,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:54,456 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:01:54,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:01:54,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:54,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:54,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1896308591, now seen corresponding path program 1 times [2022-12-13 21:01:54,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:54,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849699594] [2022-12-13 21:01:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:54,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:54,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:54,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849699594] [2022-12-13 21:01:54,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849699594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:54,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:54,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:01:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173200799] [2022-12-13 21:01:54,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:54,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:01:54,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:54,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:01:54,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:01:54,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 278 [2022-12-13 21:01:54,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:54,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 278 [2022-12-13 21:01:54,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:54,661 INFO L130 PetriNetUnfolder]: 37/193 cut-off events. [2022-12-13 21:01:54,661 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-13 21:01:54,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 193 events. 37/193 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 638 event pairs, 18 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 650. Up to 139 conditions per place. [2022-12-13 21:01:54,662 INFO L137 encePairwiseOnDemand]: 274/278 looper letters, 50 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2022-12-13 21:01:54,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 433 flow [2022-12-13 21:01:54,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:01:54,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:01:54,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2022-12-13 21:01:54,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5323741007194245 [2022-12-13 21:01:54,664 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2022-12-13 21:01:54,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2022-12-13 21:01:54,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:54,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2022-12-13 21:01:54,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,668 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,668 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 276 flow. Second operand 4 states and 592 transitions. [2022-12-13 21:01:54,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 433 flow [2022-12-13 21:01:54,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:01:54,670 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 267 flow [2022-12-13 21:01:54,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2022-12-13 21:01:54,671 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2022-12-13 21:01:54,671 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 267 flow [2022-12-13 21:01:54,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:01:54,672 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:01:54,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:01:54,672 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-12-13 21:01:54,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:01:54,672 INFO L85 PathProgramCache]: Analyzing trace with hash -182658837, now seen corresponding path program 1 times [2022-12-13 21:01:54,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:01:54,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885603396] [2022-12-13 21:01:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:01:54,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:01:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:01:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:01:54,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:01:54,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885603396] [2022-12-13 21:01:54,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885603396] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:01:54,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:01:54,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:01:54,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780462934] [2022-12-13 21:01:54,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:01:54,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:01:54,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:01:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:01:54,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:01:54,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 278 [2022-12-13 21:01:54,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:01:54,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 278 [2022-12-13 21:01:54,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:01:54,870 INFO L130 PetriNetUnfolder]: 37/191 cut-off events. [2022-12-13 21:01:54,870 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-12-13 21:01:54,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 191 events. 37/191 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 626 event pairs, 25 based on Foata normal form. 2/193 useless extension candidates. Maximal degree in co-relation 648. Up to 173 conditions per place. [2022-12-13 21:01:54,871 INFO L137 encePairwiseOnDemand]: 276/278 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2022-12-13 21:01:54,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 349 flow [2022-12-13 21:01:54,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:01:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:01:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-12-13 21:01:54,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5299760191846523 [2022-12-13 21:01:54,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-12-13 21:01:54,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-12-13 21:01:54,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:01:54,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-12-13 21:01:54,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,874 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 267 flow. Second operand 3 states and 442 transitions. [2022-12-13 21:01:54,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 349 flow [2022-12-13 21:01:54,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 343 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:01:54,875 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2022-12-13 21:01:54,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2022-12-13 21:01:54,876 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2022-12-13 21:01:54,876 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2022-12-13 21:01:54,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:54,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2022-12-13 21:01:54,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2022-12-13 21:01:54,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (7 of 10 remaining) [2022-12-13 21:01:54,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2022-12-13 21:01:54,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2022-12-13 21:01:54,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2022-12-13 21:01:54,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2022-12-13 21:01:54,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2022-12-13 21:01:54,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2022-12-13 21:01:54,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-12-13 21:01:54,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:01:54,881 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:01:54,884 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 21:01:54,884 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:01:54,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:01:54 BasicIcfg [2022-12-13 21:01:54,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:01:54,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:01:54,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:01:54,888 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:01:54,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:01:48" (3/4) ... [2022-12-13 21:01:54,891 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 21:01:54,898 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-13 21:01:54,902 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-12-13 21:01:54,902 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 21:01:54,902 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 21:01:54,902 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 21:01:54,931 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 21:01:54,931 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:01:54,931 INFO L158 Benchmark]: Toolchain (without parser) took 7277.96ms. Allocated memory was 144.7MB in the beginning and 220.2MB in the end (delta: 75.5MB). Free memory was 112.0MB in the beginning and 177.9MB in the end (delta: -65.9MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-12-13 21:01:54,931 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 144.7MB. Free memory is still 112.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:01:54,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.71ms. Allocated memory is still 144.7MB. Free memory was 111.6MB in the beginning and 92.3MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 21:01:54,932 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.55ms. Allocated memory is still 144.7MB. Free memory was 91.8MB in the beginning and 89.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:01:54,932 INFO L158 Benchmark]: Boogie Preprocessor took 18.38ms. Allocated memory is still 144.7MB. Free memory was 89.7MB in the beginning and 88.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:01:54,932 INFO L158 Benchmark]: RCFGBuilder took 373.21ms. Allocated memory is still 144.7MB. Free memory was 88.3MB in the beginning and 71.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 21:01:54,933 INFO L158 Benchmark]: TraceAbstraction took 6496.89ms. Allocated memory was 144.7MB in the beginning and 220.2MB in the end (delta: 75.5MB). Free memory was 70.4MB in the beginning and 182.1MB in the end (delta: -111.7MB). Peak memory consumption was 89.5MB. Max. memory is 16.1GB. [2022-12-13 21:01:54,933 INFO L158 Benchmark]: Witness Printer took 43.03ms. Allocated memory is still 220.2MB. Free memory was 182.1MB in the beginning and 177.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 21:01:54,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 144.7MB. Free memory is still 112.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.71ms. Allocated memory is still 144.7MB. Free memory was 111.6MB in the beginning and 92.3MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.55ms. Allocated memory is still 144.7MB. Free memory was 91.8MB in the beginning and 89.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.38ms. Allocated memory is still 144.7MB. Free memory was 89.7MB in the beginning and 88.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 373.21ms. Allocated memory is still 144.7MB. Free memory was 88.3MB in the beginning and 71.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6496.89ms. Allocated memory was 144.7MB in the beginning and 220.2MB in the end (delta: 75.5MB). Free memory was 70.4MB in the beginning and 182.1MB in the end (delta: -111.7MB). Peak memory consumption was 89.5MB. Max. memory is 16.1GB. * Witness Printer took 43.03ms. Allocated memory is still 220.2MB. Free memory was 182.1MB in the beginning and 177.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 145 PlacesBefore, 51 PlacesAfterwards, 145 TransitionsBefore, 50 TransitionsAfterwards, 4158 CoEnabledTransitionPairs, 6 FixpointIterations, 49 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 1 ChoiceCompositions, 127 TotalNumberOfCompositions, 12469 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3950, independent: 3542, independent conditional: 0, independent unconditional: 3542, dependent: 408, dependent conditional: 0, dependent unconditional: 408, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2123, independent: 2052, independent conditional: 0, independent unconditional: 2052, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3950, independent: 1490, independent conditional: 0, independent unconditional: 1490, dependent: 337, dependent conditional: 0, dependent unconditional: 337, unknown: 2123, unknown conditional: 0, unknown unconditional: 2123] , Statistics on independence cache: Total cache size (in pairs): 170, Positive cache size: 130, Positive conditional cache size: 0, Positive unconditional cache size: 130, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 704]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 183 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 953 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 518 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 238 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1584 IncrementalHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 238 mSolverCounterUnsat, 72 mSDtfsCounter, 1584 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=411occurred in iteration=9, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 213 NumberOfCodeBlocks, 213 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 1157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 21:01:54,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7725be-dfe9-4e71-98ff-76675a0d35bd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE