./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/05-lval_ls_12-fldsense_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/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_42cc0691-3a20-46bf-99d6-210f24888ce2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/05-lval_ls_12-fldsense_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/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_42cc0691-3a20-46bf-99d6-210f24888ce2/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 f07f53b70b113c395773370086657e2cda4799340cf7206361c323fc526218bf --- 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 12:44:31,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:44:31,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:44:31,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:44:31,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:44:31,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:44:31,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:44:31,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:44:31,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:44:31,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:44:31,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:44:31,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:44:31,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:44:31,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:44:31,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:44:31,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:44:31,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:44:31,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:44:31,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:44:31,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:44:31,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:44:31,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:44:31,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:44:31,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:44:31,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:44:31,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:44:31,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:44:31,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:44:31,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:44:31,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:44:31,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:44:31,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:44:31,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:44:31,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:44:31,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:44:31,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:44:31,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:44:31,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:44:31,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:44:31,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:44:31,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:44:31,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 12:44:31,604 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:44:31,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:44:31,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:44:31,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:44:31,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:44:31,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:44:31,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:44:31,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:44:31,607 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:44:31,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:44:31,607 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:44:31,607 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:44:31,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:44:31,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:44:31,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:44:31,608 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:44:31,608 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:44:31,609 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:44:31,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:44:31,609 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:44:31,609 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:44:31,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:44:31,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:44:31,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:44:31,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:44:31,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:44:31,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:44:31,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:44:31,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:44:31,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:44:31,611 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:44:31,611 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:44:31,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:44:31,612 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:44:31,612 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_42cc0691-3a20-46bf-99d6-210f24888ce2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f07f53b70b113c395773370086657e2cda4799340cf7206361c323fc526218bf [2022-12-13 12:44:31,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:44:31,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:44:31,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:44:31,816 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:44:31,817 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:44:31,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/05-lval_ls_12-fldsense_nr.i [2022-12-13 12:44:34,345 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:44:34,552 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:44:34,553 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/sv-benchmarks/c/goblint-regression/05-lval_ls_12-fldsense_nr.i [2022-12-13 12:44:34,565 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/bin/uautomizer-uyxdKDjOR8/data/739384520/12ddb781af354a43b13af59b85225667/FLAG2b0c9553d [2022-12-13 12:44:34,939 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/bin/uautomizer-uyxdKDjOR8/data/739384520/12ddb781af354a43b13af59b85225667 [2022-12-13 12:44:34,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:44:34,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:44:34,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:44:34,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:44:34,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:44:34,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:44:34" (1/1) ... [2022-12-13 12:44:34,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4007a230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:34, skipping insertion in model container [2022-12-13 12:44:34,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:44:34" (1/1) ... [2022-12-13 12:44:34,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:44:34,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:44:35,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:44:35,212 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:44:35,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:44:35,260 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:44:35,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35 WrapperNode [2022-12-13 12:44:35,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:44:35,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:44:35,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:44:35,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:44:35,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35" (1/1) ... [2022-12-13 12:44:35,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35" (1/1) ... [2022-12-13 12:44:35,295 INFO L138 Inliner]: procedures = 162, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2022-12-13 12:44:35,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:44:35,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:44:35,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:44:35,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:44:35,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35" (1/1) ... [2022-12-13 12:44:35,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35" (1/1) ... [2022-12-13 12:44:35,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35" (1/1) ... [2022-12-13 12:44:35,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35" (1/1) ... [2022-12-13 12:44:35,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35" (1/1) ... [2022-12-13 12:44:35,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35" (1/1) ... [2022-12-13 12:44:35,312 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35" (1/1) ... [2022-12-13 12:44:35,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35" (1/1) ... [2022-12-13 12:44:35,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:44:35,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:44:35,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:44:35,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:44:35,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35" (1/1) ... [2022-12-13 12:44:35,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:44:35,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:44:35,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:44:35,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:44:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:44:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:44:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 12:44:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:44:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:44:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 12:44:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 12:44:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:44:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:44:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:44:35,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:44:35,390 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 12:44:35,499 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:44:35,501 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:44:35,678 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:44:35,686 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:44:35,687 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 12:44:35,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:44:35 BoogieIcfgContainer [2022-12-13 12:44:35,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:44:35,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:44:35,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:44:35,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:44:35,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:44:34" (1/3) ... [2022-12-13 12:44:35,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553d4384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:44:35, skipping insertion in model container [2022-12-13 12:44:35,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:44:35" (2/3) ... [2022-12-13 12:44:35,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553d4384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:44:35, skipping insertion in model container [2022-12-13 12:44:35,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:44:35" (3/3) ... [2022-12-13 12:44:35,698 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_12-fldsense_nr.i [2022-12-13 12:44:35,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:44:35,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-12-13 12:44:35,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:44:35,757 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:44:35,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 85 transitions, 175 flow [2022-12-13 12:44:35,842 INFO L130 PetriNetUnfolder]: 0/84 cut-off events. [2022-12-13 12:44:35,842 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:44:35,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 84 events. 0/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-12-13 12:44:35,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 85 transitions, 175 flow [2022-12-13 12:44:35,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 84 transitions, 171 flow [2022-12-13 12:44:35,853 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:44:35,861 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 84 transitions, 171 flow [2022-12-13 12:44:35,863 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 84 transitions, 171 flow [2022-12-13 12:44:35,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 84 transitions, 171 flow [2022-12-13 12:44:35,880 INFO L130 PetriNetUnfolder]: 0/84 cut-off events. [2022-12-13 12:44:35,880 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:44:35,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 84 events. 0/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-12-13 12:44:35,881 INFO L119 LiptonReduction]: Number of co-enabled transitions 1050 [2022-12-13 12:44:37,973 INFO L134 LiptonReduction]: Checked pairs total: 3394 [2022-12-13 12:44:37,973 INFO L136 LiptonReduction]: Total number of compositions: 92 [2022-12-13 12:44:37,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:44:37,989 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;@136da195, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:44:37,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-12-13 12:44:37,990 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 12:44:37,990 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:44:37,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:44:37,991 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 12:44:37,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-13 12:44:37,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:44:37,995 INFO L85 PathProgramCache]: Analyzing trace with hash 309, now seen corresponding path program 1 times [2022-12-13 12:44:38,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:44:38,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310714178] [2022-12-13 12:44:38,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:44:38,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:44:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:38,073 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 12:44:38,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:44:38,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310714178] [2022-12-13 12:44:38,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310714178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:44:38,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:44:38,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 12:44:38,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628163700] [2022-12-13 12:44:38,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:44:38,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:44:38,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:44:38,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:44:38,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:44:38,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 177 [2022-12-13 12:44:38,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 63 flow. Second operand has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 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 12:44:38,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:44:38,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 177 [2022-12-13 12:44:38,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:44:38,159 INFO L130 PetriNetUnfolder]: 84/197 cut-off events. [2022-12-13 12:44:38,159 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:44:38,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 197 events. 84/197 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 733 event pairs, 84 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 382. Up to 190 conditions per place. [2022-12-13 12:44:38,162 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 21 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2022-12-13 12:44:38,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 91 flow [2022-12-13 12:44:38,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:44:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 12:44:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2022-12-13 12:44:38,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5536723163841808 [2022-12-13 12:44:38,172 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2022-12-13 12:44:38,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2022-12-13 12:44:38,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:44:38,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2022-12-13 12:44:38,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 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 12:44:38,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 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 12:44:38,180 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 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 12:44:38,182 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 63 flow. Second operand 2 states and 196 transitions. [2022-12-13 12:44:38,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 91 flow [2022-12-13 12:44:38,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 90 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:44:38,185 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 48 flow [2022-12-13 12:44:38,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2022-12-13 12:44:38,189 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -7 predicate places. [2022-12-13 12:44:38,189 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 48 flow [2022-12-13 12:44:38,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 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 12:44:38,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:44:38,190 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:44:38,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:44:38,190 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-13 12:44:38,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:44:38,190 INFO L85 PathProgramCache]: Analyzing trace with hash 301053, now seen corresponding path program 1 times [2022-12-13 12:44:38,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:44:38,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587963105] [2022-12-13 12:44:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:44:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:44:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:38,319 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 12:44:38,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:44:38,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587963105] [2022-12-13 12:44:38,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587963105] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:44:38,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:44:38,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:44:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522628147] [2022-12-13 12:44:38,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:44:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:44:38,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:44:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:44:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:44:38,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 177 [2022-12-13 12:44:38,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 12:44:38,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:44:38,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 177 [2022-12-13 12:44:38,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:44:38,417 INFO L130 PetriNetUnfolder]: 53/141 cut-off events. [2022-12-13 12:44:38,417 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:44:38,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 141 events. 53/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 450 event pairs, 45 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 279. Up to 114 conditions per place. [2022-12-13 12:44:38,418 INFO L137 encePairwiseOnDemand]: 168/177 looper letters, 20 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2022-12-13 12:44:38,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 104 flow [2022-12-13 12:44:38,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:44:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:44:38,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2022-12-13 12:44:38,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4500941619585687 [2022-12-13 12:44:38,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2022-12-13 12:44:38,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2022-12-13 12:44:38,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:44:38,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2022-12-13 12:44:38,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 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 12:44:38,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 12:44:38,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 12:44:38,426 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 48 flow. Second operand 3 states and 239 transitions. [2022-12-13 12:44:38,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 26 transitions, 104 flow [2022-12-13 12:44:38,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:44:38,427 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 76 flow [2022-12-13 12:44:38,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2022-12-13 12:44:38,428 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2022-12-13 12:44:38,428 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 76 flow [2022-12-13 12:44:38,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 12:44:38,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:44:38,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:44:38,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:44:38,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-13 12:44:38,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:44:38,430 INFO L85 PathProgramCache]: Analyzing trace with hash 301054, now seen corresponding path program 1 times [2022-12-13 12:44:38,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:44:38,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504477064] [2022-12-13 12:44:38,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:44:38,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:44:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:38,548 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 12:44:38,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:44:38,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504477064] [2022-12-13 12:44:38,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504477064] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:44:38,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:44:38,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:44:38,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328401694] [2022-12-13 12:44:38,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:44:38,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:44:38,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:44:38,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:44:38,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:44:38,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 177 [2022-12-13 12:44:38,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 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 12:44:38,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:44:38,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 177 [2022-12-13 12:44:38,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:44:38,623 INFO L130 PetriNetUnfolder]: 30/91 cut-off events. [2022-12-13 12:44:38,623 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 12:44:38,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 91 events. 30/91 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 264 event pairs, 28 based on Foata normal form. 5/89 useless extension candidates. Maximal degree in co-relation 229. Up to 86 conditions per place. [2022-12-13 12:44:38,624 INFO L137 encePairwiseOnDemand]: 173/177 looper letters, 17 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2022-12-13 12:44:38,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 106 flow [2022-12-13 12:44:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:44:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:44:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2022-12-13 12:44:38,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4651600753295669 [2022-12-13 12:44:38,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2022-12-13 12:44:38,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2022-12-13 12:44:38,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:44:38,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2022-12-13 12:44:38,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 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 12:44:38,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 12:44:38,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 12:44:38,630 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 76 flow. Second operand 3 states and 247 transitions. [2022-12-13 12:44:38,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 106 flow [2022-12-13 12:44:38,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:44:38,632 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 62 flow [2022-12-13 12:44:38,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2022-12-13 12:44:38,632 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2022-12-13 12:44:38,632 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 62 flow [2022-12-13 12:44:38,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 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 12:44:38,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:44:38,633 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:44:38,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:44:38,633 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-13 12:44:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:44:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1017167072, now seen corresponding path program 1 times [2022-12-13 12:44:38,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:44:38,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608735426] [2022-12-13 12:44:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:44:38,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:44:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:38,755 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 12:44:38,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:44:38,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608735426] [2022-12-13 12:44:38,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608735426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:44:38,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:44:38,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:44:38,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285755287] [2022-12-13 12:44:38,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:44:38,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:44:38,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:44:38,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:44:38,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:44:38,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 177 [2022-12-13 12:44:38,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 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 12:44:38,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:44:38,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 177 [2022-12-13 12:44:38,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:44:38,815 INFO L130 PetriNetUnfolder]: 27/78 cut-off events. [2022-12-13 12:44:38,815 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 12:44:38,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 78 events. 27/78 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 196 event pairs, 24 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 179. Up to 60 conditions per place. [2022-12-13 12:44:38,816 INFO L137 encePairwiseOnDemand]: 174/177 looper letters, 12 selfloop transitions, 2 changer transitions 6/22 dead transitions. [2022-12-13 12:44:38,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 106 flow [2022-12-13 12:44:38,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:44:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:44:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2022-12-13 12:44:38,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4896421845574388 [2022-12-13 12:44:38,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2022-12-13 12:44:38,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2022-12-13 12:44:38,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:44:38,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2022-12-13 12:44:38,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 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 12:44:38,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 12:44:38,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 12:44:38,821 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 62 flow. Second operand 3 states and 260 transitions. [2022-12-13 12:44:38,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 106 flow [2022-12-13 12:44:38,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 105 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:44:38,822 INFO L231 Difference]: Finished difference. Result has 26 places, 15 transitions, 47 flow [2022-12-13 12:44:38,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=26, PETRI_TRANSITIONS=15} [2022-12-13 12:44:38,823 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2022-12-13 12:44:38,823 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 15 transitions, 47 flow [2022-12-13 12:44:38,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 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 12:44:38,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:44:38,824 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:44:38,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:44:38,824 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-13 12:44:38,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:44:38,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2045393130, now seen corresponding path program 1 times [2022-12-13 12:44:38,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:44:38,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945506570] [2022-12-13 12:44:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:44:38,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:44:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:38,894 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 12:44:38,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:44:38,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945506570] [2022-12-13 12:44:38,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945506570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:44:38,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:44:38,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:44:38,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464740990] [2022-12-13 12:44:38,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:44:38,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:44:38,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:44:38,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:44:38,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:44:38,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 177 [2022-12-13 12:44:38,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 15 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 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 12:44:38,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:44:38,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 177 [2022-12-13 12:44:38,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:44:38,944 INFO L130 PetriNetUnfolder]: 7/32 cut-off events. [2022-12-13 12:44:38,945 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 12:44:38,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 32 events. 7/32 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 3 based on Foata normal form. 4/36 useless extension candidates. Maximal degree in co-relation 80. Up to 23 conditions per place. [2022-12-13 12:44:38,945 INFO L137 encePairwiseOnDemand]: 174/177 looper letters, 14 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2022-12-13 12:44:38,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 19 transitions, 93 flow [2022-12-13 12:44:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:44:38,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:44:38,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2022-12-13 12:44:38,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4764595103578154 [2022-12-13 12:44:38,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2022-12-13 12:44:38,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2022-12-13 12:44:38,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:44:38,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2022-12-13 12:44:38,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 12:44:38,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 12:44:38,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 12:44:38,948 INFO L175 Difference]: Start difference. First operand has 26 places, 15 transitions, 47 flow. Second operand 3 states and 253 transitions. [2022-12-13 12:44:38,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 19 transitions, 93 flow [2022-12-13 12:44:38,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 19 transitions, 87 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:44:38,949 INFO L231 Difference]: Finished difference. Result has 24 places, 15 transitions, 49 flow [2022-12-13 12:44:38,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=24, PETRI_TRANSITIONS=15} [2022-12-13 12:44:38,950 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -10 predicate places. [2022-12-13 12:44:38,950 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 49 flow [2022-12-13 12:44:38,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 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 12:44:38,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:44:38,951 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:44:38,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:44:38,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-13 12:44:38,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:44:38,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1284852648, now seen corresponding path program 2 times [2022-12-13 12:44:38,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:44:38,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410464297] [2022-12-13 12:44:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:44:38,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:44:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:39,028 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 12:44:39,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:44:39,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410464297] [2022-12-13 12:44:39,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410464297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:44:39,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:44:39,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:44:39,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483999923] [2022-12-13 12:44:39,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:44:39,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:44:39,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:44:39,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:44:39,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:44:39,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 177 [2022-12-13 12:44:39,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 12:44:39,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:44:39,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 177 [2022-12-13 12:44:39,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:44:39,112 INFO L130 PetriNetUnfolder]: 7/30 cut-off events. [2022-12-13 12:44:39,113 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 12:44:39,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 30 events. 7/30 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 7 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 79. Up to 29 conditions per place. [2022-12-13 12:44:39,113 INFO L137 encePairwiseOnDemand]: 174/177 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2022-12-13 12:44:39,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 13 transitions, 65 flow [2022-12-13 12:44:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:44:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:44:39,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2022-12-13 12:44:39,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4048964218455744 [2022-12-13 12:44:39,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2022-12-13 12:44:39,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2022-12-13 12:44:39,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:44:39,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2022-12-13 12:44:39,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 12:44:39,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 12:44:39,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 12:44:39,119 INFO L175 Difference]: Start difference. First operand has 24 places, 15 transitions, 49 flow. Second operand 3 states and 215 transitions. [2022-12-13 12:44:39,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 13 transitions, 65 flow [2022-12-13 12:44:39,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 13 transitions, 60 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:44:39,120 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2022-12-13 12:44:39,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2022-12-13 12:44:39,120 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -12 predicate places. [2022-12-13 12:44:39,120 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2022-12-13 12:44:39,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 12:44:39,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 20 remaining) [2022-12-13 12:44:39,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2022-12-13 12:44:39,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2022-12-13 12:44:39,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2022-12-13 12:44:39,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2022-12-13 12:44:39,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2022-12-13 12:44:39,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2022-12-13 12:44:39,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2022-12-13 12:44:39,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2022-12-13 12:44:39,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2022-12-13 12:44:39,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (9 of 20 remaining) [2022-12-13 12:44:39,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2022-12-13 12:44:39,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2022-12-13 12:44:39,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2022-12-13 12:44:39,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2022-12-13 12:44:39,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2022-12-13 12:44:39,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2022-12-13 12:44:39,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 20 remaining) [2022-12-13 12:44:39,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 20 remaining) [2022-12-13 12:44:39,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 20 remaining) [2022-12-13 12:44:39,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:44:39,125 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-12-13 12:44:39,129 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 12:44:39,129 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 12:44:39,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:44:39 BasicIcfg [2022-12-13 12:44:39,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 12:44:39,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 12:44:39,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 12:44:39,132 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 12:44:39,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:44:35" (3/4) ... [2022-12-13 12:44:39,135 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 12:44:39,139 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-13 12:44:39,142 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-12-13 12:44:39,142 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 12:44:39,142 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 12:44:39,166 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 12:44:39,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 12:44:39,167 INFO L158 Benchmark]: Toolchain (without parser) took 4221.48ms. Allocated memory was 142.6MB in the beginning and 220.2MB in the end (delta: 77.6MB). Free memory was 107.4MB in the beginning and 67.7MB in the end (delta: 39.7MB). Peak memory consumption was 119.4MB. Max. memory is 16.1GB. [2022-12-13 12:44:39,167 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 142.6MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:44:39,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.89ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 88.5MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 12:44:39,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.11ms. Allocated memory is still 142.6MB. Free memory was 88.5MB in the beginning and 86.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:44:39,168 INFO L158 Benchmark]: Boogie Preprocessor took 18.07ms. Allocated memory is still 142.6MB. Free memory was 86.5MB in the beginning and 84.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:44:39,168 INFO L158 Benchmark]: RCFGBuilder took 374.29ms. Allocated memory was 142.6MB in the beginning and 220.2MB in the end (delta: 77.6MB). Free memory was 84.7MB in the beginning and 187.8MB in the end (delta: -103.1MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2022-12-13 12:44:39,168 INFO L158 Benchmark]: TraceAbstraction took 3439.65ms. Allocated memory is still 220.2MB. Free memory was 186.8MB in the beginning and 70.9MB in the end (delta: 115.9MB). Peak memory consumption was 115.9MB. Max. memory is 16.1GB. [2022-12-13 12:44:39,168 INFO L158 Benchmark]: Witness Printer took 34.30ms. Allocated memory is still 220.2MB. Free memory was 70.9MB in the beginning and 67.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:44:39,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 142.6MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.89ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 88.5MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.11ms. Allocated memory is still 142.6MB. Free memory was 88.5MB in the beginning and 86.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.07ms. Allocated memory is still 142.6MB. Free memory was 86.5MB in the beginning and 84.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 374.29ms. Allocated memory was 142.6MB in the beginning and 220.2MB in the end (delta: 77.6MB). Free memory was 84.7MB in the beginning and 187.8MB in the end (delta: -103.1MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3439.65ms. Allocated memory is still 220.2MB. Free memory was 186.8MB in the beginning and 70.9MB in the end (delta: 115.9MB). Peak memory consumption was 115.9MB. Max. memory is 16.1GB. * Witness Printer took 34.30ms. Allocated memory is still 220.2MB. Free memory was 70.9MB in the beginning and 67.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 88 PlacesBefore, 34 PlacesAfterwards, 84 TransitionsBefore, 30 TransitionsAfterwards, 1050 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 92 TotalNumberOfCompositions, 3394 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1527, independent: 1318, independent conditional: 0, independent unconditional: 1318, dependent: 209, dependent conditional: 0, dependent unconditional: 209, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 641, independent: 592, independent conditional: 0, independent unconditional: 592, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1527, independent: 726, independent conditional: 0, independent unconditional: 726, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 641, unknown conditional: 0, unknown unconditional: 641] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 687]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 103 locations, 20 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: 3.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 405 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 379 IncrementalHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 26 mSDtfsCounter, 379 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=2, InterpolantAutomatonStates: 17, 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 12:44:39,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc0691-3a20-46bf-99d6-210f24888ce2/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