./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/b.01-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/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_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/b.01-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/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 64bit --witnessprinter.graph.data.programhash 06eda88bcf58fadc282f0463569ac76abefe45f388be92897534a5e4ca080960 --- 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 22:27:58,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:27:58,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:27:58,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:27:58,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:27:58,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:27:58,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:27:58,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:27:58,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:27:58,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:27:58,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:27:58,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:27:58,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:27:58,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:27:58,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:27:58,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:27:58,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:27:58,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:27:58,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:27:58,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:27:58,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:27:58,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:27:58,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:27:58,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:27:58,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:27:58,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:27:58,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:27:58,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:27:58,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:27:58,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:27:58,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:27:58,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:27:58,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:27:58,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:27:58,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:27:58,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:27:58,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:27:58,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:27:58,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:27:58,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:27:58,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:27:58,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-12-13 22:27:58,266 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:27:58,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:27:58,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:27:58,266 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:27:58,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:27:58,267 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:27:58,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:27:58,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:27:58,267 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:27:58,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:27:58,268 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:27:58,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:27:58,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:27:58,268 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 22:27:58,268 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 22:27:58,268 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 22:27:58,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:27:58,268 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 22:27:58,269 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:27:58,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:27:58,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:27:58,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:27:58,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:27:58,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:27:58,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:27:58,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:27:58,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:27:58,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:27:58,270 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:27:58,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:27:58,270 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:27:58,270 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_95c5e53c-c536-4994-be7f-8022ab929562/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06eda88bcf58fadc282f0463569ac76abefe45f388be92897534a5e4ca080960 [2022-12-13 22:27:58,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:27:58,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:27:58,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:27:58,450 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:27:58,450 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:27:58,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-memory-alloca/b.01-alloca.i [2022-12-13 22:28:00,999 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:28:01,171 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:28:01,171 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/sv-benchmarks/c/termination-memory-alloca/b.01-alloca.i [2022-12-13 22:28:01,178 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8/data/8ea2b4081/e4e00601c521465e8a45791b84caf00d/FLAGce1c22536 [2022-12-13 22:28:01,191 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8/data/8ea2b4081/e4e00601c521465e8a45791b84caf00d [2022-12-13 22:28:01,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:28:01,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:28:01,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:28:01,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:28:01,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:28:01,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f5d638e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01, skipping insertion in model container [2022-12-13 22:28:01,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:28:01,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:28:01,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:28:01,455 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:28:01,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:28:01,509 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:28:01,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01 WrapperNode [2022-12-13 22:28:01,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:28:01,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:28:01,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:28:01,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:28:01,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,543 INFO L138 Inliner]: procedures = 111, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2022-12-13 22:28:01,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:28:01,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:28:01,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:28:01,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:28:01,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,561 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:28:01,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:28:01,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:28:01,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:28:01,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01" (1/1) ... [2022-12-13 22:28:01,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:28:01,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:28:01,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:28:01,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:28:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:28:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:28:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:28:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:28:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:28:01,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:28:01,696 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:28:01,698 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:28:01,835 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:28:01,839 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:28:01,840 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 22:28:01,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:28:01 BoogieIcfgContainer [2022-12-13 22:28:01,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:28:01,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:28:01,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:28:01,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:28:01,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:28:01" (1/3) ... [2022-12-13 22:28:01,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc2ecb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:28:01, skipping insertion in model container [2022-12-13 22:28:01,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:28:01" (2/3) ... [2022-12-13 22:28:01,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc2ecb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:28:01, skipping insertion in model container [2022-12-13 22:28:01,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:28:01" (3/3) ... [2022-12-13 22:28:01,848 INFO L112 eAbstractionObserver]: Analyzing ICFG b.01-alloca.i [2022-12-13 22:28:01,862 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:28:01,862 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-12-13 22:28:01,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:28:01,899 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;@12cf8fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:28:01,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 22:28:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 16 states have (on average 2.1875) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 22:28:01,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-13 22:28:01,907 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:28:01,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-13 22:28:01,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:28:01,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:28:01,912 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-12-13 22:28:01,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:28:01,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433003102] [2022-12-13 22:28:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:01,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:28:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:02,284 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 22:28:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:28:02,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433003102] [2022-12-13 22:28:02,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433003102] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:28:02,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:28:02,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:28:02,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613243535] [2022-12-13 22:28:02,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:28:02,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:28:02,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:28:02,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:28:02,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:02,320 INFO L87 Difference]: Start difference. First operand has 34 states, 16 states have (on average 2.1875) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 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 22:28:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:28:02,372 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-12-13 22:28:02,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:28:02,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-13 22:28:02,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:28:02,383 INFO L225 Difference]: With dead ends: 30 [2022-12-13 22:28:02,384 INFO L226 Difference]: Without dead ends: 28 [2022-12-13 22:28:02,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:02,389 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:28:02,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 15 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:28:02,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-13 22:28:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-12-13 22:28:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 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 22:28:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-12-13 22:28:02,416 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 3 [2022-12-13 22:28:02,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:28:02,417 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-12-13 22:28:02,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 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 22:28:02,417 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-12-13 22:28:02,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-13 22:28:02,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:28:02,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-13 22:28:02,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:28:02,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:28:02,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:28:02,419 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-12-13 22:28:02,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:28:02,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193251333] [2022-12-13 22:28:02,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:02,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:28:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:02,564 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 22:28:02,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:28:02,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193251333] [2022-12-13 22:28:02,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193251333] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:28:02,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:28:02,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:28:02,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411744898] [2022-12-13 22:28:02,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:28:02,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:28:02,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:28:02,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:28:02,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:02,567 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 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 22:28:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:28:02,589 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-12-13 22:28:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:28:02,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-13 22:28:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:28:02,590 INFO L225 Difference]: With dead ends: 24 [2022-12-13 22:28:02,590 INFO L226 Difference]: Without dead ends: 24 [2022-12-13 22:28:02,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:02,592 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:28:02,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 13 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:28:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-13 22:28:02,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-13 22:28:02,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.6) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 22:28:02,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-12-13 22:28:02,595 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 3 [2022-12-13 22:28:02,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:28:02,596 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-12-13 22:28:02,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 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 22:28:02,596 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-12-13 22:28:02,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-13 22:28:02,596 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:28:02,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-13 22:28:02,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:28:02,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:28:02,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:28:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash 925543, now seen corresponding path program 1 times [2022-12-13 22:28:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:28:02,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080197438] [2022-12-13 22:28:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:02,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:28:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:02,675 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 22:28:02,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:28:02,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080197438] [2022-12-13 22:28:02,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080197438] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:28:02,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:28:02,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:28:02,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826465914] [2022-12-13 22:28:02,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:28:02,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:28:02,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:28:02,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:28:02,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:02,678 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 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 22:28:02,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:28:02,702 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-12-13 22:28:02,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:28:02,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-13 22:28:02,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:28:02,704 INFO L225 Difference]: With dead ends: 22 [2022-12-13 22:28:02,704 INFO L226 Difference]: Without dead ends: 22 [2022-12-13 22:28:02,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:02,705 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:28:02,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 10 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:28:02,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-13 22:28:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-13 22:28:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 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 22:28:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-12-13 22:28:02,709 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 4 [2022-12-13 22:28:02,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:28:02,709 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-12-13 22:28:02,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 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 22:28:02,710 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-12-13 22:28:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-13 22:28:02,710 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:28:02,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-13 22:28:02,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 22:28:02,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:28:02,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:28:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash 925544, now seen corresponding path program 1 times [2022-12-13 22:28:02,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:28:02,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966668047] [2022-12-13 22:28:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:02,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:28:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:02,801 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 22:28:02,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:28:02,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966668047] [2022-12-13 22:28:02,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966668047] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:28:02,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:28:02,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:28:02,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832989459] [2022-12-13 22:28:02,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:28:02,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:28:02,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:28:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:28:02,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:02,804 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 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 22:28:02,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:28:02,821 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-12-13 22:28:02,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:28:02,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-13 22:28:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:28:02,822 INFO L225 Difference]: With dead ends: 20 [2022-12-13 22:28:02,823 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 22:28:02,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:02,824 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:28:02,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 11 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:28:02,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 22:28:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-13 22:28:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 22:28:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-12-13 22:28:02,827 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 4 [2022-12-13 22:28:02,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:28:02,827 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-12-13 22:28:02,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 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 22:28:02,828 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-12-13 22:28:02,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 22:28:02,828 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:28:02,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 22:28:02,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 22:28:02,828 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:28:02,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:28:02,829 INFO L85 PathProgramCache]: Analyzing trace with hash 28691812, now seen corresponding path program 1 times [2022-12-13 22:28:02,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:28:02,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603457521] [2022-12-13 22:28:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:02,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:28:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:02,888 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 22:28:02,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:28:02,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603457521] [2022-12-13 22:28:02,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603457521] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:28:02,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:28:02,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:28:02,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406008788] [2022-12-13 22:28:02,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:28:02,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:28:02,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:28:02,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:28:02,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:02,891 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 22:28:02,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:28:02,910 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-12-13 22:28:02,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:28:02,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-13 22:28:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:28:02,911 INFO L225 Difference]: With dead ends: 18 [2022-12-13 22:28:02,911 INFO L226 Difference]: Without dead ends: 18 [2022-12-13 22:28:02,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:02,913 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:28:02,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 8 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:28:02,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-13 22:28:02,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-13 22:28:02,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 22:28:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-12-13 22:28:02,915 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 5 [2022-12-13 22:28:02,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:28:02,916 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-12-13 22:28:02,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 22:28:02,916 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-12-13 22:28:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 22:28:02,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:28:02,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 22:28:02,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 22:28:02,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:28:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:28:02,918 INFO L85 PathProgramCache]: Analyzing trace with hash 28691813, now seen corresponding path program 1 times [2022-12-13 22:28:02,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:28:02,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594888276] [2022-12-13 22:28:02,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:02,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:28:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:02,979 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 22:28:02,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:28:02,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594888276] [2022-12-13 22:28:02,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594888276] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:28:02,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:28:02,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:28:02,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602923238] [2022-12-13 22:28:02,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:28:02,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:28:02,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:28:02,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:28:02,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:02,981 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 22:28:02,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:28:02,995 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-13 22:28:02,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:28:02,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-13 22:28:02,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:28:02,996 INFO L225 Difference]: With dead ends: 16 [2022-12-13 22:28:02,996 INFO L226 Difference]: Without dead ends: 16 [2022-12-13 22:28:02,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:02,997 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:28:02,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 9 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:28:02,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-13 22:28:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-13 22:28:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 22:28:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-12-13 22:28:03,000 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 5 [2022-12-13 22:28:03,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:28:03,000 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-12-13 22:28:03,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 22:28:03,000 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-12-13 22:28:03,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 22:28:03,001 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:28:03,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:28:03,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:28:03,001 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:28:03,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:28:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2048829865, now seen corresponding path program 1 times [2022-12-13 22:28:03,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:28:03,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676876714] [2022-12-13 22:28:03,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:03,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:28:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,219 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 22:28:03,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:28:03,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676876714] [2022-12-13 22:28:03,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676876714] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:28:03,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:28:03,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:28:03,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957375920] [2022-12-13 22:28:03,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:28:03,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:28:03,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:28:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:28:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:28:03,221 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 22:28:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:28:03,253 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-12-13 22:28:03,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:28:03,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 22:28:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:28:03,254 INFO L225 Difference]: With dead ends: 15 [2022-12-13 22:28:03,254 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 22:28:03,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:28:03,255 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:28:03,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:28:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 22:28:03,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 22:28:03,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 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 22:28:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 22:28:03,256 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-12-13 22:28:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:28:03,256 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 22:28:03,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 22:28:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 22:28:03,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 22:28:03,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2022-12-13 22:28:03,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2022-12-13 22:28:03,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2022-12-13 22:28:03,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2022-12-13 22:28:03,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2022-12-13 22:28:03,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2022-12-13 22:28:03,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2022-12-13 22:28:03,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2022-12-13 22:28:03,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2022-12-13 22:28:03,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2022-12-13 22:28:03,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2022-12-13 22:28:03,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2022-12-13 22:28:03,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2022-12-13 22:28:03,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2022-12-13 22:28:03,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2022-12-13 22:28:03,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2022-12-13 22:28:03,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (0 of 17 remaining) [2022-12-13 22:28:03,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:28:03,266 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:28:03,268 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:28:03,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:28:03 BoogieIcfgContainer [2022-12-13 22:28:03,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:28:03,271 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:28:03,272 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:28:03,272 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:28:03,272 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:28:01" (3/4) ... [2022-12-13 22:28:03,275 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 22:28:03,285 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-13 22:28:03,285 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 22:28:03,285 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 22:28:03,285 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 22:28:03,315 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 22:28:03,315 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:28:03,316 INFO L158 Benchmark]: Toolchain (without parser) took 2122.13ms. Allocated memory was 125.8MB in the beginning and 180.4MB in the end (delta: 54.5MB). Free memory was 71.3MB in the beginning and 88.2MB in the end (delta: -16.8MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2022-12-13 22:28:03,316 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:28:03,316 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.06ms. Allocated memory was 125.8MB in the beginning and 180.4MB in the end (delta: 54.5MB). Free memory was 71.0MB in the beginning and 146.9MB in the end (delta: -75.9MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2022-12-13 22:28:03,317 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.97ms. Allocated memory is still 180.4MB. Free memory was 146.9MB in the beginning and 144.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:28:03,317 INFO L158 Benchmark]: Boogie Preprocessor took 20.41ms. Allocated memory is still 180.4MB. Free memory was 144.8MB in the beginning and 143.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:28:03,317 INFO L158 Benchmark]: RCFGBuilder took 276.55ms. Allocated memory is still 180.4MB. Free memory was 143.3MB in the beginning and 130.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 22:28:03,318 INFO L158 Benchmark]: TraceAbstraction took 1428.01ms. Allocated memory is still 180.4MB. Free memory was 130.2MB in the beginning and 91.3MB in the end (delta: 38.9MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2022-12-13 22:28:03,318 INFO L158 Benchmark]: Witness Printer took 43.98ms. Allocated memory is still 180.4MB. Free memory was 91.3MB in the beginning and 88.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 22:28:03,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.06ms. Allocated memory was 125.8MB in the beginning and 180.4MB in the end (delta: 54.5MB). Free memory was 71.0MB in the beginning and 146.9MB in the end (delta: -75.9MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.97ms. Allocated memory is still 180.4MB. Free memory was 146.9MB in the beginning and 144.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.41ms. Allocated memory is still 180.4MB. Free memory was 144.8MB in the beginning and 143.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 276.55ms. Allocated memory is still 180.4MB. Free memory was 143.3MB in the beginning and 130.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1428.01ms. Allocated memory is still 180.4MB. Free memory was 130.2MB in the beginning and 91.3MB in the end (delta: 38.9MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * Witness Printer took 43.98ms. Allocated memory is still 180.4MB. Free memory was 91.3MB in the beginning and 88.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 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: -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: 560]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 65 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 22:28:03,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c5e53c-c536-4994-be7f-8022ab929562/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