./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/a.10-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/a.10-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --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 5993f8ca278f17db67b0d89d60473315dd1639b7ed95b3e55f223aad0ab4864f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:48:06,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:48:06,448 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-24 21:48:06,455 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:48:06,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:48:06,507 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:48:06,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:48:06,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:48:06,509 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:48:06,514 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:48:06,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:48:06,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:48:06,517 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:48:06,518 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:48:06,519 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:48:06,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:48:06,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:48:06,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:48:06,521 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:48:06,521 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:48:06,521 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:48:06,523 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:48:06,524 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:48:06,524 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:48:06,525 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:48:06,526 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:48:06,526 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:48:06,526 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:48:06,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:48:06,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:48:06,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:48:06,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:48:06,537 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:48:06,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:48:06,537 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:48:06,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:48:06,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:48:06,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:48:06,538 INFO L153 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_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5993f8ca278f17db67b0d89d60473315dd1639b7ed95b3e55f223aad0ab4864f [2023-11-24 21:48:06,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:48:06,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:48:06,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:48:06,932 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:48:06,932 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:48:06,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/termination-memory-alloca/a.10-alloca.i [2023-11-24 21:48:10,015 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:48:10,368 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:48:10,373 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/sv-benchmarks/c/termination-memory-alloca/a.10-alloca.i [2023-11-24 21:48:10,391 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/data/71748dbe2/7e9fe289614f4db28b70816ee19eee36/FLAGe8861c0e0 [2023-11-24 21:48:10,412 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/data/71748dbe2/7e9fe289614f4db28b70816ee19eee36 [2023-11-24 21:48:10,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:48:10,420 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:48:10,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:48:10,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:48:10,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:48:10,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:10,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c978eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10, skipping insertion in model container [2023-11-24 21:48:10,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:10,497 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:48:10,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:48:10,893 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:48:10,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:48:10,993 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:48:10,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10 WrapperNode [2023-11-24 21:48:10,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:48:10,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:48:10,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:48:10,996 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:48:11,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:11,024 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:11,057 INFO L138 Inliner]: procedures = 111, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-11-24 21:48:11,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:48:11,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:48:11,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:48:11,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:48:11,074 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:11,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:11,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:11,094 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [5, 5, 2]. 42 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0]. The 5 writes are split as follows [2, 2, 1]. [2023-11-24 21:48:11,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:11,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:11,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:11,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:11,106 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:11,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:11,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:48:11,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:48:11,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:48:11,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:48:11,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (1/1) ... [2023-11-24 21:48:11,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:48:11,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:48:11,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:48:11,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:48:11,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:48:11,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:48:11,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:48:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:48:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:48:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:48:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:48:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:48:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:48:11,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:48:11,369 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:48:11,371 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:48:11,657 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:48:11,697 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:48:11,697 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 21:48:11,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:48:11 BoogieIcfgContainer [2023-11-24 21:48:11,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:48:11,701 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:48:11,701 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:48:11,705 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:48:11,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:48:10" (1/3) ... [2023-11-24 21:48:11,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6664f40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:48:11, skipping insertion in model container [2023-11-24 21:48:11,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:10" (2/3) ... [2023-11-24 21:48:11,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6664f40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:48:11, skipping insertion in model container [2023-11-24 21:48:11,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:48:11" (3/3) ... [2023-11-24 21:48:11,719 INFO L112 eAbstractionObserver]: Analyzing ICFG a.10-alloca.i [2023-11-24 21:48:11,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:48:11,740 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-11-24 21:48:11,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:48:11,794 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;@4962bf4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:48:11,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-24 21:48:11,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 16 states have (on average 2.75) internal successors, (44), 41 states have internal predecessors, (44), 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) [2023-11-24 21:48:11,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 21:48:11,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:48:11,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 21:48:11,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-24 21:48:11,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:11,813 INFO L85 PathProgramCache]: Analyzing trace with hash 3011, now seen corresponding path program 1 times [2023-11-24 21:48:11,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:48:11,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603403990] [2023-11-24 21:48:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:11,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:48:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:12,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:48:12,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603403990] [2023-11-24 21:48:12,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603403990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:12,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:12,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:48:12,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324474036] [2023-11-24 21:48:12,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:12,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:48:12,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:48:12,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:48:12,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:12,287 INFO L87 Difference]: Start difference. First operand has 42 states, 16 states have (on average 2.75) internal successors, (44), 41 states have internal predecessors, (44), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-24 21:48:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:48:12,399 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2023-11-24 21:48:12,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:12,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-24 21:48:12,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:48:12,411 INFO L225 Difference]: With dead ends: 37 [2023-11-24 21:48:12,411 INFO L226 Difference]: Without dead ends: 36 [2023-11-24 21:48:12,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:12,420 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:48:12,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 12 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:48:12,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-24 21:48:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-24 21:48:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 16 states have (on average 2.3125) internal successors, (37), 35 states have internal predecessors, (37), 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) [2023-11-24 21:48:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2023-11-24 21:48:12,472 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 2 [2023-11-24 21:48:12,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:48:12,473 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2023-11-24 21:48:12,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-24 21:48:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2023-11-24 21:48:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 21:48:12,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:48:12,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 21:48:12,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:48:12,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-24 21:48:12,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:12,478 INFO L85 PathProgramCache]: Analyzing trace with hash 3012, now seen corresponding path program 1 times [2023-11-24 21:48:12,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:48:12,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089517165] [2023-11-24 21:48:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:12,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:48:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:12,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:48:12,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089517165] [2023-11-24 21:48:12,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089517165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:12,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:12,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:48:12,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445723880] [2023-11-24 21:48:12,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:12,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:48:12,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:48:12,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:48:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:12,705 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-24 21:48:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:48:12,746 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-11-24 21:48:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:12,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-24 21:48:12,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:48:12,748 INFO L225 Difference]: With dead ends: 31 [2023-11-24 21:48:12,748 INFO L226 Difference]: Without dead ends: 31 [2023-11-24 21:48:12,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:12,750 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:48:12,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 13 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:48:12,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-24 21:48:12,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-24 21:48:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 2.0) internal successors, (32), 30 states have internal predecessors, (32), 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) [2023-11-24 21:48:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2023-11-24 21:48:12,760 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 2 [2023-11-24 21:48:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:48:12,761 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-11-24 21:48:12,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-24 21:48:12,761 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-11-24 21:48:12,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 21:48:12,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:48:12,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 21:48:12,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:48:12,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-24 21:48:12,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:12,765 INFO L85 PathProgramCache]: Analyzing trace with hash 93317, now seen corresponding path program 1 times [2023-11-24 21:48:12,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:48:12,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017467149] [2023-11-24 21:48:12,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:12,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:48:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:12,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:48:12,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017467149] [2023-11-24 21:48:12,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017467149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:12,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:12,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:48:12,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221522532] [2023-11-24 21:48:12,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:12,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:48:12,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:48:12,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:48:12,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:12,898 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-24 21:48:12,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:48:12,951 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2023-11-24 21:48:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:12,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2023-11-24 21:48:12,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:48:12,953 INFO L225 Difference]: With dead ends: 26 [2023-11-24 21:48:12,953 INFO L226 Difference]: Without dead ends: 26 [2023-11-24 21:48:12,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:12,961 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:48:12,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 7 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:48:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-24 21:48:12,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-24 21:48:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.6875) internal successors, (27), 25 states have internal predecessors, (27), 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) [2023-11-24 21:48:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2023-11-24 21:48:12,973 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 3 [2023-11-24 21:48:12,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:48:12,975 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2023-11-24 21:48:12,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-24 21:48:12,975 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2023-11-24 21:48:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 21:48:12,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:48:12,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 21:48:12,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:48:12,978 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-24 21:48:12,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:12,981 INFO L85 PathProgramCache]: Analyzing trace with hash 93318, now seen corresponding path program 1 times [2023-11-24 21:48:12,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:48:12,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638665425] [2023-11-24 21:48:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:12,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:48:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:13,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:48:13,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638665425] [2023-11-24 21:48:13,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638665425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:13,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:13,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:48:13,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155850646] [2023-11-24 21:48:13,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:13,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:48:13,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:48:13,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:48:13,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:13,139 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-24 21:48:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:48:13,178 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2023-11-24 21:48:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:13,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2023-11-24 21:48:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:48:13,180 INFO L225 Difference]: With dead ends: 21 [2023-11-24 21:48:13,180 INFO L226 Difference]: Without dead ends: 21 [2023-11-24 21:48:13,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:13,192 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:48:13,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 8 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:48:13,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-24 21:48:13,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-24 21:48:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 20 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) [2023-11-24 21:48:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-11-24 21:48:13,201 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 3 [2023-11-24 21:48:13,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:48:13,201 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-11-24 21:48:13,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-24 21:48:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-11-24 21:48:13,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 21:48:13,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:48:13,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 21:48:13,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:48:13,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-24 21:48:13,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:13,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2892806, now seen corresponding path program 1 times [2023-11-24 21:48:13,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:48:13,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479136599] [2023-11-24 21:48:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:13,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:48:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:13,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:48:13,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479136599] [2023-11-24 21:48:13,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479136599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:13,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:13,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:48:13,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390752030] [2023-11-24 21:48:13,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:13,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:48:13,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:48:13,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:48:13,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:13,286 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2023-11-24 21:48:13,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:48:13,319 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-11-24 21:48:13,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:13,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2023-11-24 21:48:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:48:13,322 INFO L225 Difference]: With dead ends: 19 [2023-11-24 21:48:13,322 INFO L226 Difference]: Without dead ends: 19 [2023-11-24 21:48:13,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:13,323 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:48:13,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 5 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:48:13,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-24 21:48:13,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-24 21:48:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.25) internal successors, (20), 18 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) [2023-11-24 21:48:13,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-11-24 21:48:13,339 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2023-11-24 21:48:13,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:48:13,339 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-11-24 21:48:13,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2023-11-24 21:48:13,339 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-11-24 21:48:13,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 21:48:13,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:48:13,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 21:48:13,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:48:13,340 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-24 21:48:13,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:13,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2892807, now seen corresponding path program 1 times [2023-11-24 21:48:13,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:48:13,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44342224] [2023-11-24 21:48:13,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:13,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:48:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:13,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:48:13,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44342224] [2023-11-24 21:48:13,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44342224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:13,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:13,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:48:13,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158253104] [2023-11-24 21:48:13,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:13,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:48:13,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:48:13,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:48:13,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:13,463 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2023-11-24 21:48:13,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:48:13,489 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2023-11-24 21:48:13,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:13,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2023-11-24 21:48:13,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:48:13,491 INFO L225 Difference]: With dead ends: 17 [2023-11-24 21:48:13,493 INFO L226 Difference]: Without dead ends: 17 [2023-11-24 21:48:13,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:13,494 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6 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 [2023-11-24 21:48:13,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:48:13,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-24 21:48:13,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-24 21:48:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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) [2023-11-24 21:48:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-11-24 21:48:13,497 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 4 [2023-11-24 21:48:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:48:13,497 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-11-24 21:48:13,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2023-11-24 21:48:13,498 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-11-24 21:48:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 21:48:13,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:48:13,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:48:13,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:48:13,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-24 21:48:13,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:13,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1287842551, now seen corresponding path program 1 times [2023-11-24 21:48:13,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:48:13,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192346569] [2023-11-24 21:48:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:13,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:48:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:13,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:48:13,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192346569] [2023-11-24 21:48:13,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192346569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:13,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:13,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:48:13,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781169549] [2023-11-24 21:48:13,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:13,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:48:13,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:48:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:48:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:48:13,732 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-24 21:48:13,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:48:13,770 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2023-11-24 21:48:13,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:48:13,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-24 21:48:13,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:48:13,771 INFO L225 Difference]: With dead ends: 16 [2023-11-24 21:48:13,771 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 21:48:13,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:48:13,773 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:48:13,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 8 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:48:13,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 21:48:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 21:48:13,775 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) [2023-11-24 21:48:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 21:48:13,775 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2023-11-24 21:48:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:48:13,776 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 21:48:13,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-24 21:48:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 21:48:13,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 21:48:13,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 25 remaining) [2023-11-24 21:48:13,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2023-11-24 21:48:13,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2023-11-24 21:48:13,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2023-11-24 21:48:13,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2023-11-24 21:48:13,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2023-11-24 21:48:13,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining) [2023-11-24 21:48:13,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 25 remaining) [2023-11-24 21:48:13,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 25 remaining) [2023-11-24 21:48:13,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2023-11-24 21:48:13,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2023-11-24 21:48:13,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2023-11-24 21:48:13,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2023-11-24 21:48:13,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2023-11-24 21:48:13,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2023-11-24 21:48:13,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2023-11-24 21:48:13,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 25 remaining) [2023-11-24 21:48:13,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 25 remaining) [2023-11-24 21:48:13,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 25 remaining) [2023-11-24 21:48:13,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 25 remaining) [2023-11-24 21:48:13,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 25 remaining) [2023-11-24 21:48:13,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining) [2023-11-24 21:48:13,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining) [2023-11-24 21:48:13,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 25 remaining) [2023-11-24 21:48:13,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (0 of 25 remaining) [2023-11-24 21:48:13,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:48:13,791 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:48:13,794 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:48:13,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:48:13 BoogieIcfgContainer [2023-11-24 21:48:13,799 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:48:13,800 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:48:13,800 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:48:13,800 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:48:13,801 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:48:11" (3/4) ... [2023-11-24 21:48:13,803 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:48:13,814 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-24 21:48:13,815 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-24 21:48:13,815 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:48:13,816 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:48:13,915 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:48:13,916 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:48:13,916 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:48:13,917 INFO L158 Benchmark]: Toolchain (without parser) took 3496.76ms. Allocated memory is still 157.3MB. Free memory was 125.9MB in the beginning and 74.0MB in the end (delta: 51.8MB). Peak memory consumption was 55.0MB. Max. memory is 16.1GB. [2023-11-24 21:48:13,917 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 130.0MB. Free memory is still 103.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:48:13,918 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.86ms. Allocated memory is still 157.3MB. Free memory was 125.9MB in the beginning and 109.7MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 21:48:13,918 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.13ms. Allocated memory is still 157.3MB. Free memory was 109.7MB in the beginning and 107.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:48:13,919 INFO L158 Benchmark]: Boogie Preprocessor took 51.95ms. Allocated memory is still 157.3MB. Free memory was 107.6MB in the beginning and 105.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:48:13,919 INFO L158 Benchmark]: RCFGBuilder took 587.26ms. Allocated memory is still 157.3MB. Free memory was 105.5MB in the beginning and 88.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 21:48:13,920 INFO L158 Benchmark]: TraceAbstraction took 2098.58ms. Allocated memory is still 157.3MB. Free memory was 88.2MB in the beginning and 79.3MB in the end (delta: 8.9MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2023-11-24 21:48:13,920 INFO L158 Benchmark]: Witness Printer took 116.51ms. Allocated memory is still 157.3MB. Free memory was 79.3MB in the beginning and 74.0MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-24 21:48:13,922 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 130.0MB. Free memory is still 103.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 570.86ms. Allocated memory is still 157.3MB. Free memory was 125.9MB in the beginning and 109.7MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.13ms. Allocated memory is still 157.3MB. Free memory was 109.7MB in the beginning and 107.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.95ms. Allocated memory is still 157.3MB. Free memory was 107.6MB in the beginning and 105.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 587.26ms. Allocated memory is still 157.3MB. Free memory was 105.5MB in the beginning and 88.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2098.58ms. Allocated memory is still 157.3MB. Free memory was 88.2MB in the beginning and 79.3MB in the end (delta: 8.9MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Witness Printer took 116.51ms. Allocated memory is still 157.3MB. Free memory was 79.3MB in the beginning and 74.0MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. 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: -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: 564]: 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, 42 locations, 25 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145 IncrementalHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 52 mSDtfsCounter, 145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 262 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 25 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:48:13,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745f3d7c-eaf1-4060-962b-c35d43749c69/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE