./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_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_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/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_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/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_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/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 a900e47bcb0579a731ecfed3c71b01054e5f0917c7f65049265d17494d326436 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:16:01,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:16:01,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:16:01,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:16:01,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:16:01,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:16:01,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:16:01,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:16:01,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:16:01,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:16:01,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:16:01,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:16:01,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:16:01,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:16:01,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:16:01,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:16:01,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:16:01,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:16:01,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:16:01,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:16:01,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:16:01,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:16:01,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:16:01,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:16:01,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:16:01,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:16:01,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:16:01,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:16:01,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:16:01,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:16:01,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:16:01,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:16:01,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:16:01,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:16:01,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:16:01,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:16:01,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:16:01,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:16:01,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:16:01,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:16:01,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:16:01,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 18:16:01,189 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:16:01,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:16:01,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:16:01,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:16:01,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:16:01,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:16:01,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:16:01,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:16:01,191 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:16:01,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:16:01,191 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:16:01,191 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:16:01,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:16:01,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:16:01,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:16:01,192 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 18:16:01,192 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 18:16:01,192 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 18:16:01,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:16:01,193 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 18:16:01,193 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:16:01,193 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:16:01,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:16:01,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:16:01,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:16:01,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:16:01,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:16:01,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:16:01,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:16:01,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:16:01,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:16:01,195 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:16:01,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:16:01,195 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:16:01,195 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_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a900e47bcb0579a731ecfed3c71b01054e5f0917c7f65049265d17494d326436 [2022-12-13 18:16:01,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:16:01,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:16:01,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:16:01,393 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:16:01,393 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:16:01,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2022-12-13 18:16:04,078 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:16:04,266 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:16:04,267 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2022-12-13 18:16:04,276 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/bin/uautomizer-uyxdKDjOR8/data/6fb39b84c/5fdf60f0e1264f50a64d060c8e27214f/FLAG837ed8bf6 [2022-12-13 18:16:04,287 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/bin/uautomizer-uyxdKDjOR8/data/6fb39b84c/5fdf60f0e1264f50a64d060c8e27214f [2022-12-13 18:16:04,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:16:04,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:16:04,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:16:04,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:16:04,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:16:04,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3245ca1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04, skipping insertion in model container [2022-12-13 18:16:04,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:16:04,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:16:04,427 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_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2022-12-13 18:16:04,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:16:04,528 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:16:04,536 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_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2022-12-13 18:16:04,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:16:04,576 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:16:04,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04 WrapperNode [2022-12-13 18:16:04,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:16:04,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:16:04,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:16:04,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:16:04,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,607 INFO L138 Inliner]: procedures = 162, calls = 40, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2022-12-13 18:16:04,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:16:04,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:16:04,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:16:04,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:16:04,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,621 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:16:04,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:16:04,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:16:04,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:16:04,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04" (1/1) ... [2022-12-13 18:16:04,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:16:04,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:04,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:16:04,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:16:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:16:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 18:16:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 18:16:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:16:04,696 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 18:16:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:16:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:16:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:16:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:16:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:16:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:16:04,699 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:16:04,798 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:16:04,800 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:16:04,975 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:16:04,983 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:16:04,983 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:16:04,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:16:04 BoogieIcfgContainer [2022-12-13 18:16:04,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:16:04,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:16:04,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:16:04,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:16:04,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:16:04" (1/3) ... [2022-12-13 18:16:04,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bb0e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:16:04, skipping insertion in model container [2022-12-13 18:16:04,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:04" (2/3) ... [2022-12-13 18:16:04,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bb0e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:16:04, skipping insertion in model container [2022-12-13 18:16:04,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:16:04" (3/3) ... [2022-12-13 18:16:04,995 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2022-12-13 18:16:05,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:16:05,016 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 18:16:05,016 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:16:05,061 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 18:16:05,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 119 transitions, 246 flow [2022-12-13 18:16:05,126 INFO L130 PetriNetUnfolder]: 3/118 cut-off events. [2022-12-13 18:16:05,127 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:16:05,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 118 events. 3/118 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2022-12-13 18:16:05,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 119 transitions, 246 flow [2022-12-13 18:16:05,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 113 transitions, 232 flow [2022-12-13 18:16:05,136 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:16:05,144 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 113 transitions, 232 flow [2022-12-13 18:16:05,146 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 113 transitions, 232 flow [2022-12-13 18:16:05,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 113 transitions, 232 flow [2022-12-13 18:16:05,167 INFO L130 PetriNetUnfolder]: 3/113 cut-off events. [2022-12-13 18:16:05,167 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:16:05,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 113 events. 3/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2022-12-13 18:16:05,168 INFO L119 LiptonReduction]: Number of co-enabled transitions 1692 [2022-12-13 18:16:07,718 INFO L134 LiptonReduction]: Checked pairs total: 5108 [2022-12-13 18:16:07,718 INFO L136 LiptonReduction]: Total number of compositions: 103 [2022-12-13 18:16:07,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:16:07,736 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;@3856eabc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:16:07,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-13 18:16:07,738 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 18:16:07,738 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:16:07,739 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:07,739 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:16:07,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2022-12-13 18:16:07,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:07,744 INFO L85 PathProgramCache]: Analyzing trace with hash 406, now seen corresponding path program 1 times [2022-12-13 18:16:07,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:07,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273453935] [2022-12-13 18:16:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:07,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:16:07,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:07,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273453935] [2022-12-13 18:16:07,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273453935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:07,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:07,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:16:07,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364234044] [2022-12-13 18:16:07,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:07,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:16:07,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:07,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:16:07,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:16:07,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 222 [2022-12-13 18:16:07,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:07,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:07,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 222 [2022-12-13 18:16:07,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:16:07,933 INFO L130 PetriNetUnfolder]: 96/235 cut-off events. [2022-12-13 18:16:07,933 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:16:07,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 235 events. 96/235 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 917 event pairs, 96 based on Foata normal form. 7/198 useless extension candidates. Maximal degree in co-relation 445. Up to 219 conditions per place. [2022-12-13 18:16:07,936 INFO L137 encePairwiseOnDemand]: 218/222 looper letters, 25 selfloop transitions, 0 changer transitions 1/29 dead transitions. [2022-12-13 18:16:07,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 116 flow [2022-12-13 18:16:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:16:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:16:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 252 transitions. [2022-12-13 18:16:07,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2022-12-13 18:16:07,947 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 252 transitions. [2022-12-13 18:16:07,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 252 transitions. [2022-12-13 18:16:07,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:07,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 252 transitions. [2022-12-13 18:16:07,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:07,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:07,958 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:07,959 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 74 flow. Second operand 2 states and 252 transitions. [2022-12-13 18:16:07,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 116 flow [2022-12-13 18:16:07,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:16:07,963 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 58 flow [2022-12-13 18:16:07,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2022-12-13 18:16:07,967 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2022-12-13 18:16:07,967 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 58 flow [2022-12-13 18:16:07,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:07,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:07,968 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:16:07,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:16:07,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2022-12-13 18:16:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash 382462801, now seen corresponding path program 1 times [2022-12-13 18:16:07,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:07,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402736938] [2022-12-13 18:16:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:07,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:16:08,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:08,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402736938] [2022-12-13 18:16:08,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402736938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:08,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:08,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:16:08,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280183754] [2022-12-13 18:16:08,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:08,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:16:08,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:16:08,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:16:08,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 222 [2022-12-13 18:16:08,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:08,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 222 [2022-12-13 18:16:08,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:16:08,266 INFO L130 PetriNetUnfolder]: 102/249 cut-off events. [2022-12-13 18:16:08,267 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:16:08,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 249 events. 102/249 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1011 event pairs, 32 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 480. Up to 157 conditions per place. [2022-12-13 18:16:08,268 INFO L137 encePairwiseOnDemand]: 219/222 looper letters, 38 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-12-13 18:16:08,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 166 flow [2022-12-13 18:16:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:16:08,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:16:08,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2022-12-13 18:16:08,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5480480480480481 [2022-12-13 18:16:08,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2022-12-13 18:16:08,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2022-12-13 18:16:08,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:08,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2022-12-13 18:16:08,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,276 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 58 flow. Second operand 3 states and 365 transitions. [2022-12-13 18:16:08,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 166 flow [2022-12-13 18:16:08,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 166 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:16:08,278 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 66 flow [2022-12-13 18:16:08,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2022-12-13 18:16:08,279 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-12-13 18:16:08,279 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 66 flow [2022-12-13 18:16:08,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:08,279 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:08,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:16:08,280 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2022-12-13 18:16:08,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1820453145, now seen corresponding path program 1 times [2022-12-13 18:16:08,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:08,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731146862] [2022-12-13 18:16:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:08,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:16:08,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:08,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731146862] [2022-12-13 18:16:08,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731146862] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:08,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:08,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:16:08,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582531111] [2022-12-13 18:16:08,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:08,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:16:08,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:08,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:16:08,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:16:08,399 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 222 [2022-12-13 18:16:08,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:08,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 222 [2022-12-13 18:16:08,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:16:08,483 INFO L130 PetriNetUnfolder]: 103/248 cut-off events. [2022-12-13 18:16:08,484 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 18:16:08,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 248 events. 103/248 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 933 event pairs, 18 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 516. Up to 82 conditions per place. [2022-12-13 18:16:08,486 INFO L137 encePairwiseOnDemand]: 213/222 looper letters, 39 selfloop transitions, 12 changer transitions 0/53 dead transitions. [2022-12-13 18:16:08,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 53 transitions, 221 flow [2022-12-13 18:16:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:16:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:16:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 578 transitions. [2022-12-13 18:16:08,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5207207207207207 [2022-12-13 18:16:08,488 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 578 transitions. [2022-12-13 18:16:08,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 578 transitions. [2022-12-13 18:16:08,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:08,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 578 transitions. [2022-12-13 18:16:08,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,492 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,492 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 66 flow. Second operand 5 states and 578 transitions. [2022-12-13 18:16:08,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 53 transitions, 221 flow [2022-12-13 18:16:08,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 53 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:16:08,493 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 131 flow [2022-12-13 18:16:08,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2022-12-13 18:16:08,493 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2022-12-13 18:16:08,494 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 131 flow [2022-12-13 18:16:08,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:08,494 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:08,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:16:08,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2022-12-13 18:16:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:08,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1341886820, now seen corresponding path program 1 times [2022-12-13 18:16:08,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:08,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526927729] [2022-12-13 18:16:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:08,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:16:08,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:08,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526927729] [2022-12-13 18:16:08,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526927729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:08,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:08,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:16:08,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762161724] [2022-12-13 18:16:08,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:08,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:16:08,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:16:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:16:08,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 222 [2022-12-13 18:16:08,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:08,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 222 [2022-12-13 18:16:08,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:16:08,648 INFO L130 PetriNetUnfolder]: 73/213 cut-off events. [2022-12-13 18:16:08,649 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 18:16:08,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 213 events. 73/213 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 814 event pairs, 25 based on Foata normal form. 20/205 useless extension candidates. Maximal degree in co-relation 521. Up to 130 conditions per place. [2022-12-13 18:16:08,650 INFO L137 encePairwiseOnDemand]: 209/222 looper letters, 36 selfloop transitions, 15 changer transitions 0/53 dead transitions. [2022-12-13 18:16:08,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 299 flow [2022-12-13 18:16:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:16:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:16:08,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2022-12-13 18:16:08,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.521021021021021 [2022-12-13 18:16:08,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2022-12-13 18:16:08,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2022-12-13 18:16:08,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:08,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2022-12-13 18:16:08,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,656 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 131 flow. Second operand 3 states and 347 transitions. [2022-12-13 18:16:08,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 299 flow [2022-12-13 18:16:08,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 279 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-13 18:16:08,659 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 206 flow [2022-12-13 18:16:08,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2022-12-13 18:16:08,660 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2022-12-13 18:16:08,660 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 206 flow [2022-12-13 18:16:08,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:08,660 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:08,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:16:08,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2022-12-13 18:16:08,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:08,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1349855816, now seen corresponding path program 1 times [2022-12-13 18:16:08,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:08,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353581721] [2022-12-13 18:16:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:08,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:16:08,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:08,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353581721] [2022-12-13 18:16:08,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353581721] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:08,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:08,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:16:08,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098691681] [2022-12-13 18:16:08,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:08,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:16:08,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:08,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:16:08,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:16:08,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 222 [2022-12-13 18:16:08,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:08,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 222 [2022-12-13 18:16:08,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:16:08,872 INFO L130 PetriNetUnfolder]: 76/215 cut-off events. [2022-12-13 18:16:08,872 INFO L131 PetriNetUnfolder]: For 61/62 co-relation queries the response was YES. [2022-12-13 18:16:08,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 215 events. 76/215 cut-off events. For 61/62 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 860 event pairs, 21 based on Foata normal form. 2/187 useless extension candidates. Maximal degree in co-relation 668. Up to 102 conditions per place. [2022-12-13 18:16:08,875 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 72 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2022-12-13 18:16:08,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 83 transitions, 525 flow [2022-12-13 18:16:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:16:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:16:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2022-12-13 18:16:08,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2022-12-13 18:16:08,878 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2022-12-13 18:16:08,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2022-12-13 18:16:08,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:08,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2022-12-13 18:16:08,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,882 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,882 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 206 flow. Second operand 6 states and 700 transitions. [2022-12-13 18:16:08,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 83 transitions, 525 flow [2022-12-13 18:16:08,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 83 transitions, 495 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:16:08,885 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 204 flow [2022-12-13 18:16:08,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2022-12-13 18:16:08,885 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2022-12-13 18:16:08,885 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 204 flow [2022-12-13 18:16:08,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:08,886 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:08,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:16:08,886 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2022-12-13 18:16:08,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:08,886 INFO L85 PathProgramCache]: Analyzing trace with hash 131298334, now seen corresponding path program 1 times [2022-12-13 18:16:08,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:08,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807522323] [2022-12-13 18:16:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:08,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:16:08,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:08,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807522323] [2022-12-13 18:16:08,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807522323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:08,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:08,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:16:08,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566619818] [2022-12-13 18:16:08,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:08,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:16:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:08,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:16:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:16:08,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 222 [2022-12-13 18:16:08,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:08,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:08,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 222 [2022-12-13 18:16:08,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:16:09,106 INFO L130 PetriNetUnfolder]: 76/211 cut-off events. [2022-12-13 18:16:09,106 INFO L131 PetriNetUnfolder]: For 90/91 co-relation queries the response was YES. [2022-12-13 18:16:09,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 211 events. 76/211 cut-off events. For 90/91 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 782 event pairs, 9 based on Foata normal form. 5/185 useless extension candidates. Maximal degree in co-relation 667. Up to 101 conditions per place. [2022-12-13 18:16:09,108 INFO L137 encePairwiseOnDemand]: 212/222 looper letters, 54 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2022-12-13 18:16:09,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 72 transitions, 450 flow [2022-12-13 18:16:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:16:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 18:16:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1085 transitions. [2022-12-13 18:16:09,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48873873873873874 [2022-12-13 18:16:09,112 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1085 transitions. [2022-12-13 18:16:09,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1085 transitions. [2022-12-13 18:16:09,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:09,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1085 transitions. [2022-12-13 18:16:09,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 222.0) internal successors, (2442), 11 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,117 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 222.0) internal successors, (2442), 11 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,117 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 204 flow. Second operand 10 states and 1085 transitions. [2022-12-13 18:16:09,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 72 transitions, 450 flow [2022-12-13 18:16:09,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 426 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 18:16:09,119 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 226 flow [2022-12-13 18:16:09,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=226, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2022-12-13 18:16:09,119 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2022-12-13 18:16:09,120 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 226 flow [2022-12-13 18:16:09,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:09,120 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:09,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:16:09,120 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2022-12-13 18:16:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash -246135704, now seen corresponding path program 1 times [2022-12-13 18:16:09,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:09,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131659520] [2022-12-13 18:16:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:09,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:09,189 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 18:16:09,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:09,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131659520] [2022-12-13 18:16:09,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131659520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:09,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:09,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:16:09,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115286276] [2022-12-13 18:16:09,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:09,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:16:09,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:09,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:16:09,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:16:09,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 222 [2022-12-13 18:16:09,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:09,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 222 [2022-12-13 18:16:09,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:16:09,319 INFO L130 PetriNetUnfolder]: 74/206 cut-off events. [2022-12-13 18:16:09,319 INFO L131 PetriNetUnfolder]: For 96/97 co-relation queries the response was YES. [2022-12-13 18:16:09,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 206 events. 74/206 cut-off events. For 96/97 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 772 event pairs, 18 based on Foata normal form. 4/180 useless extension candidates. Maximal degree in co-relation 649. Up to 100 conditions per place. [2022-12-13 18:16:09,320 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 69 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2022-12-13 18:16:09,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 536 flow [2022-12-13 18:16:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:16:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:16:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 803 transitions. [2022-12-13 18:16:09,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5167310167310167 [2022-12-13 18:16:09,323 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 803 transitions. [2022-12-13 18:16:09,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 803 transitions. [2022-12-13 18:16:09,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:09,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 803 transitions. [2022-12-13 18:16:09,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,328 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,329 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 226 flow. Second operand 7 states and 803 transitions. [2022-12-13 18:16:09,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 536 flow [2022-12-13 18:16:09,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 83 transitions, 513 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-13 18:16:09,332 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 228 flow [2022-12-13 18:16:09,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2022-12-13 18:16:09,333 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2022-12-13 18:16:09,333 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 228 flow [2022-12-13 18:16:09,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:09,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:09,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:16:09,334 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2022-12-13 18:16:09,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1945545379, now seen corresponding path program 1 times [2022-12-13 18:16:09,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:09,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244835989] [2022-12-13 18:16:09,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:09,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:16:09,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:09,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244835989] [2022-12-13 18:16:09,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244835989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:09,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:09,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:16:09,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239758446] [2022-12-13 18:16:09,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:09,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:16:09,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:09,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:16:09,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:16:09,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 222 [2022-12-13 18:16:09,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:09,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 222 [2022-12-13 18:16:09,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:16:09,460 INFO L130 PetriNetUnfolder]: 56/172 cut-off events. [2022-12-13 18:16:09,460 INFO L131 PetriNetUnfolder]: For 125/126 co-relation queries the response was YES. [2022-12-13 18:16:09,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 172 events. 56/172 cut-off events. For 125/126 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 600 event pairs, 36 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 547. Up to 146 conditions per place. [2022-12-13 18:16:09,461 INFO L137 encePairwiseOnDemand]: 219/222 looper letters, 34 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-12-13 18:16:09,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 292 flow [2022-12-13 18:16:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:16:09,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:16:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2022-12-13 18:16:09,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.512012012012012 [2022-12-13 18:16:09,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2022-12-13 18:16:09,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2022-12-13 18:16:09,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:09,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2022-12-13 18:16:09,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,465 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,465 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 228 flow. Second operand 3 states and 341 transitions. [2022-12-13 18:16:09,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 292 flow [2022-12-13 18:16:09,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 274 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 18:16:09,466 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 206 flow [2022-12-13 18:16:09,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=44, 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=206, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2022-12-13 18:16:09,467 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2022-12-13 18:16:09,467 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 206 flow [2022-12-13 18:16:09,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:09,468 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:09,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:16:09,468 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2022-12-13 18:16:09,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:09,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1945545378, now seen corresponding path program 1 times [2022-12-13 18:16:09,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:09,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137749383] [2022-12-13 18:16:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:09,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:16:09,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:09,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137749383] [2022-12-13 18:16:09,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137749383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:09,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:09,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:16:09,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488527552] [2022-12-13 18:16:09,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:09,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:16:09,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:16:09,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:16:09,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 222 [2022-12-13 18:16:09,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:09,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 222 [2022-12-13 18:16:09,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:16:09,576 INFO L130 PetriNetUnfolder]: 46/150 cut-off events. [2022-12-13 18:16:09,576 INFO L131 PetriNetUnfolder]: For 86/87 co-relation queries the response was YES. [2022-12-13 18:16:09,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 150 events. 46/150 cut-off events. For 86/87 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 497 event pairs, 32 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 454. Up to 127 conditions per place. [2022-12-13 18:16:09,577 INFO L137 encePairwiseOnDemand]: 219/222 looper letters, 32 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2022-12-13 18:16:09,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 266 flow [2022-12-13 18:16:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:16:09,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:16:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2022-12-13 18:16:09,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.496996996996997 [2022-12-13 18:16:09,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2022-12-13 18:16:09,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2022-12-13 18:16:09,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:09,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2022-12-13 18:16:09,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,581 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 206 flow. Second operand 3 states and 331 transitions. [2022-12-13 18:16:09,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 266 flow [2022-12-13 18:16:09,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:16:09,582 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 198 flow [2022-12-13 18:16:09,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2022-12-13 18:16:09,583 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2022-12-13 18:16:09,583 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 198 flow [2022-12-13 18:16:09,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:09,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:09,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:16:09,583 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2022-12-13 18:16:09,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:09,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1205464946, now seen corresponding path program 1 times [2022-12-13 18:16:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:09,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125506419] [2022-12-13 18:16:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:16:09,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:09,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125506419] [2022-12-13 18:16:09,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125506419] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:09,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:09,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:16:09,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470665415] [2022-12-13 18:16:09,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:09,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:16:09,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:09,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:16:09,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:16:09,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 222 [2022-12-13 18:16:09,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:09,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 222 [2022-12-13 18:16:09,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:16:09,971 INFO L130 PetriNetUnfolder]: 25/103 cut-off events. [2022-12-13 18:16:09,971 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-12-13 18:16:09,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 103 events. 25/103 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 285 event pairs, 3 based on Foata normal form. 10/113 useless extension candidates. Maximal degree in co-relation 315. Up to 69 conditions per place. [2022-12-13 18:16:09,972 INFO L137 encePairwiseOnDemand]: 217/222 looper letters, 38 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2022-12-13 18:16:09,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 304 flow [2022-12-13 18:16:09,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:16:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:16:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2022-12-13 18:16:09,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48085585585585583 [2022-12-13 18:16:09,973 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 427 transitions. [2022-12-13 18:16:09,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 427 transitions. [2022-12-13 18:16:09,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:09,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 427 transitions. [2022-12-13 18:16:09,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,975 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 198 flow. Second operand 4 states and 427 transitions. [2022-12-13 18:16:09,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 304 flow [2022-12-13 18:16:09,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 296 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 18:16:09,976 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 180 flow [2022-12-13 18:16:09,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2022-12-13 18:16:09,976 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2022-12-13 18:16:09,976 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 180 flow [2022-12-13 18:16:09,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:09,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:09,977 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:09,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:16:09,977 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2022-12-13 18:16:09,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1675497629, now seen corresponding path program 1 times [2022-12-13 18:16:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:09,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372790758] [2022-12-13 18:16:09,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:09,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:16:10,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:10,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372790758] [2022-12-13 18:16:10,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372790758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:10,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:10,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:16:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103914710] [2022-12-13 18:16:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:10,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:16:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:16:10,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:16:10,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 222 [2022-12-13 18:16:10,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:10,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:10,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 222 [2022-12-13 18:16:10,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:16:10,143 INFO L130 PetriNetUnfolder]: 26/104 cut-off events. [2022-12-13 18:16:10,143 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-12-13 18:16:10,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 104 events. 26/104 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 270 event pairs, 12 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 330. Up to 62 conditions per place. [2022-12-13 18:16:10,144 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 35 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2022-12-13 18:16:10,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 301 flow [2022-12-13 18:16:10,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:16:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:16:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 668 transitions. [2022-12-13 18:16:10,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2022-12-13 18:16:10,145 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 668 transitions. [2022-12-13 18:16:10,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 668 transitions. [2022-12-13 18:16:10,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:10,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 668 transitions. [2022-12-13 18:16:10,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:10,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:10,148 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:10,148 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 180 flow. Second operand 6 states and 668 transitions. [2022-12-13 18:16:10,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 301 flow [2022-12-13 18:16:10,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:16:10,149 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 184 flow [2022-12-13 18:16:10,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2022-12-13 18:16:10,150 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2022-12-13 18:16:10,150 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 184 flow [2022-12-13 18:16:10,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:10,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:10,150 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] [2022-12-13 18:16:10,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:16:10,151 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2022-12-13 18:16:10,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:10,151 INFO L85 PathProgramCache]: Analyzing trace with hash -675468357, now seen corresponding path program 1 times [2022-12-13 18:16:10,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:10,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377426277] [2022-12-13 18:16:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:10,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:16:10,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:10,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377426277] [2022-12-13 18:16:10,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377426277] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:10,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:10,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:16:10,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574066518] [2022-12-13 18:16:10,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:10,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:16:10,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:10,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:16:10,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:16:10,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 222 [2022-12-13 18:16:10,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:10,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:10,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 222 [2022-12-13 18:16:10,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:16:10,313 INFO L130 PetriNetUnfolder]: 24/100 cut-off events. [2022-12-13 18:16:10,313 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-12-13 18:16:10,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 100 events. 24/100 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 261 event pairs, 18 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 328. Up to 87 conditions per place. [2022-12-13 18:16:10,314 INFO L137 encePairwiseOnDemand]: 220/222 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2022-12-13 18:16:10,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 35 transitions, 242 flow [2022-12-13 18:16:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:16:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:16:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2022-12-13 18:16:10,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.512012012012012 [2022-12-13 18:16:10,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2022-12-13 18:16:10,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2022-12-13 18:16:10,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:10,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2022-12-13 18:16:10,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:10,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:10,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:10,319 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 184 flow. Second operand 3 states and 341 transitions. [2022-12-13 18:16:10,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 35 transitions, 242 flow [2022-12-13 18:16:10,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 224 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 18:16:10,320 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2022-12-13 18:16:10,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2022-12-13 18:16:10,320 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-12-13 18:16:10,321 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2022-12-13 18:16:10,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:10,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2022-12-13 18:16:10,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2022-12-13 18:16:10,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 9 remaining) [2022-12-13 18:16:10,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (5 of 9 remaining) [2022-12-13 18:16:10,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2022-12-13 18:16:10,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2022-12-13 18:16:10,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2022-12-13 18:16:10,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2022-12-13 18:16:10,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2022-12-13 18:16:10,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:16:10,324 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:10,326 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 18:16:10,326 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:16:10,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:16:10 BasicIcfg [2022-12-13 18:16:10,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:16:10,329 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:16:10,329 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:16:10,329 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:16:10,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:16:04" (3/4) ... [2022-12-13 18:16:10,332 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:16:10,336 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2022-12-13 18:16:10,339 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-13 18:16:10,339 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 18:16:10,339 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 18:16:10,339 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 18:16:10,363 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:16:10,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:16:10,364 INFO L158 Benchmark]: Toolchain (without parser) took 6074.02ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 94.4MB in the beginning and 117.4MB in the end (delta: -23.0MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2022-12-13 18:16:10,364 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:16:10,364 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.30ms. Allocated memory is still 134.2MB. Free memory was 94.1MB in the beginning and 74.8MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 18:16:10,364 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.68ms. Allocated memory is still 134.2MB. Free memory was 74.8MB in the beginning and 72.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:16:10,364 INFO L158 Benchmark]: Boogie Preprocessor took 16.81ms. Allocated memory is still 134.2MB. Free memory was 72.7MB in the beginning and 71.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:16:10,365 INFO L158 Benchmark]: RCFGBuilder took 361.03ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 71.0MB in the beginning and 150.2MB in the end (delta: -79.2MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2022-12-13 18:16:10,365 INFO L158 Benchmark]: TraceAbstraction took 5340.10ms. Allocated memory is still 190.8MB. Free memory was 149.1MB in the beginning and 120.6MB in the end (delta: 28.6MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2022-12-13 18:16:10,365 INFO L158 Benchmark]: Witness Printer took 34.25ms. Allocated memory is still 190.8MB. Free memory was 120.6MB in the beginning and 117.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:16:10,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.30ms. Allocated memory is still 134.2MB. Free memory was 94.1MB in the beginning and 74.8MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.68ms. Allocated memory is still 134.2MB. Free memory was 74.8MB in the beginning and 72.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.81ms. Allocated memory is still 134.2MB. Free memory was 72.7MB in the beginning and 71.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 361.03ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 71.0MB in the beginning and 150.2MB in the end (delta: -79.2MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * TraceAbstraction took 5340.10ms. Allocated memory is still 190.8MB. Free memory was 149.1MB in the beginning and 120.6MB in the end (delta: 28.6MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * Witness Printer took 34.25ms. Allocated memory is still 190.8MB. Free memory was 120.6MB in the beginning and 117.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 114 PlacesBefore, 36 PlacesAfterwards, 113 TransitionsBefore, 34 TransitionsAfterwards, 1692 CoEnabledTransitionPairs, 7 FixpointIterations, 46 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 103 TotalNumberOfCompositions, 5108 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1557, independent: 1266, independent conditional: 0, independent unconditional: 1266, dependent: 291, dependent conditional: 0, dependent unconditional: 291, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 891, independent: 838, independent conditional: 0, independent unconditional: 838, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1557, independent: 428, independent conditional: 0, independent unconditional: 428, dependent: 238, dependent conditional: 0, dependent unconditional: 238, unknown: 891, unknown conditional: 0, unknown unconditional: 891] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, 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: -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: 696]: 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, 137 locations, 9 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: 5.2s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 777 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 517 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1318 IncrementalHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 75 mSDtfsCounter, 1318 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=228occurred in iteration=7, InterpolantAutomatonStates: 55, 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, 0.9s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 843 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 18:16:10,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ab4ca-d3cc-43a7-b325-9eb6b429d2fd/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