./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/a.09_assume-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/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_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/a.09_assume-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/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_6a70aff2-4425-48e5-97fa-12e2762893fc/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 29282a3bf422a4239bd2757ad686eee31020f0cfb559a37401ead246e8f2c486 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:56:11,655 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:56:11,783 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-24 21:56:11,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:56:11,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:56:11,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:56:11,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:56:11,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:56:11,836 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:56:11,841 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:56:11,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:56:11,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:56:11,844 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:56:11,845 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:56:11,846 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:56:11,846 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:56:11,847 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:56:11,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:56:11,848 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:56:11,849 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:56:11,849 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:56:11,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:56:11,851 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:56:11,851 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:56:11,852 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:56:11,853 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:56:11,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:56:11,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:56:11,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:56:11,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:56:11,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:56:11,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:56:11,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:56:11,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:56:11,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:56:11,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:56:11,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:56:11,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:56:11,859 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_6a70aff2-4425-48e5-97fa-12e2762893fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29282a3bf422a4239bd2757ad686eee31020f0cfb559a37401ead246e8f2c486 [2023-11-24 21:56:12,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:56:12,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:56:12,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:56:12,250 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:56:12,251 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:56:12,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/termination-memory-alloca/a.09_assume-alloca.i [2023-11-24 21:56:15,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:56:15,616 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:56:15,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/sv-benchmarks/c/termination-memory-alloca/a.09_assume-alloca.i [2023-11-24 21:56:15,643 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/data/3ea816536/a4cdf4392e584677b008ca2a63de1240/FLAG64e9ef478 [2023-11-24 21:56:15,660 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/data/3ea816536/a4cdf4392e584677b008ca2a63de1240 [2023-11-24 21:56:15,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:56:15,663 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:56:15,665 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:56:15,665 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:56:15,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:56:15,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:56:15" (1/1) ... [2023-11-24 21:56:15,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2267e646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:15, skipping insertion in model container [2023-11-24 21:56:15,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:56:15" (1/1) ... [2023-11-24 21:56:15,722 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:56:16,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:56:16,035 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:56:16,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:56:16,156 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:56:16,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16 WrapperNode [2023-11-24 21:56:16,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:56:16,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:56:16,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:56:16,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:56:16,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (1/1) ... [2023-11-24 21:56:16,184 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (1/1) ... [2023-11-24 21:56:16,215 INFO L138 Inliner]: procedures = 111, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2023-11-24 21:56:16,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:56:16,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:56:16,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:56:16,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:56:16,236 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (1/1) ... [2023-11-24 21:56:16,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (1/1) ... [2023-11-24 21:56:16,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (1/1) ... [2023-11-24 21:56:16,271 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 8, 5]. 53 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0]. The 4 writes are split as follows [1, 2, 1]. [2023-11-24 21:56:16,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (1/1) ... [2023-11-24 21:56:16,279 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (1/1) ... [2023-11-24 21:56:16,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (1/1) ... [2023-11-24 21:56:16,292 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (1/1) ... [2023-11-24 21:56:16,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (1/1) ... [2023-11-24 21:56:16,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (1/1) ... [2023-11-24 21:56:16,310 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:56:16,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:56:16,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:56:16,317 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:56:16,318 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (1/1) ... [2023-11-24 21:56:16,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:56:16,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:56:16,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:56:16,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:56:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:56:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:56:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:56:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:56:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:56:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:56:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:56:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:56:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:56:16,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:56:16,503 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:56:16,506 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:56:16,889 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:56:16,930 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:56:16,931 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 21:56:16,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:56:16 BoogieIcfgContainer [2023-11-24 21:56:16,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:56:16,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:56:16,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:56:16,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:56:16,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:56:15" (1/3) ... [2023-11-24 21:56:16,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aecc86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:56:16, skipping insertion in model container [2023-11-24 21:56:16,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:16" (2/3) ... [2023-11-24 21:56:16,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aecc86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:56:16, skipping insertion in model container [2023-11-24 21:56:16,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:56:16" (3/3) ... [2023-11-24 21:56:16,941 INFO L112 eAbstractionObserver]: Analyzing ICFG a.09_assume-alloca.i [2023-11-24 21:56:16,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:56:16,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-11-24 21:56:17,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:56:17,018 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;@6122658a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:56:17,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-24 21:56:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 53 states have internal predecessors, (58), 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 21:56:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 21:56:17,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:17,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 21:56:17,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-24 21:56:17,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:17,038 INFO L85 PathProgramCache]: Analyzing trace with hash 3786, now seen corresponding path program 1 times [2023-11-24 21:56:17,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:17,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052513386] [2023-11-24 21:56:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:17,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:17,465 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 21:56:17,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:17,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052513386] [2023-11-24 21:56:17,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052513386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:17,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:17,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:56:17,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251447178] [2023-11-24 21:56:17,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:17,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:56:17,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:17,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:56:17,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:56:17,529 INFO L87 Difference]: Start difference. First operand has 54 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 53 states have internal predecessors, (58), 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 21:56:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:17,627 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2023-11-24 21:56:17,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:56:17,630 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 21:56:17,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:17,639 INFO L225 Difference]: With dead ends: 52 [2023-11-24 21:56:17,640 INFO L226 Difference]: Without dead ends: 51 [2023-11-24 21:56:17,641 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 21:56:17,648 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:17,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 23 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:56:17,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-24 21:56:17,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-24 21:56:17,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 50 states have internal predecessors, (54), 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 21:56:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2023-11-24 21:56:17,691 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 2 [2023-11-24 21:56:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:17,692 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2023-11-24 21:56:17,692 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 21:56:17,694 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2023-11-24 21:56:17,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 21:56:17,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:17,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 21:56:17,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:56:17,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-24 21:56:17,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:17,697 INFO L85 PathProgramCache]: Analyzing trace with hash 3787, now seen corresponding path program 1 times [2023-11-24 21:56:17,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:17,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951741193] [2023-11-24 21:56:17,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:17,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:17,937 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 21:56:17,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:17,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951741193] [2023-11-24 21:56:17,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951741193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:17,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:17,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:56:17,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659461874] [2023-11-24 21:56:17,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:17,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:56:17,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:56:17,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:56:17,949 INFO L87 Difference]: Start difference. First operand 51 states and 54 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 21:56:18,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:18,043 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2023-11-24 21:56:18,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:56:18,044 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 21:56:18,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:18,046 INFO L225 Difference]: With dead ends: 49 [2023-11-24 21:56:18,046 INFO L226 Difference]: Without dead ends: 49 [2023-11-24 21:56:18,048 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 21:56:18,049 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 49 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:18,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 24 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:56:18,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-24 21:56:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-24 21:56:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 48 states have internal predecessors, (52), 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 21:56:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2023-11-24 21:56:18,068 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 2 [2023-11-24 21:56:18,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:18,069 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2023-11-24 21:56:18,069 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 21:56:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2023-11-24 21:56:18,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 21:56:18,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:18,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 21:56:18,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:56:18,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-24 21:56:18,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash 117342, now seen corresponding path program 1 times [2023-11-24 21:56:18,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:18,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970108918] [2023-11-24 21:56:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:18,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:18,173 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 21:56:18,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:18,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970108918] [2023-11-24 21:56:18,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970108918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:18,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:18,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:56:18,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022042149] [2023-11-24 21:56:18,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:18,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:56:18,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:18,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:56:18,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:56:18,176 INFO L87 Difference]: Start difference. First operand 49 states and 52 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 21:56:18,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:18,301 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2023-11-24 21:56:18,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:56:18,301 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 21:56:18,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:18,303 INFO L225 Difference]: With dead ends: 44 [2023-11-24 21:56:18,303 INFO L226 Difference]: Without dead ends: 44 [2023-11-24 21:56:18,305 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 21:56:18,307 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:18,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 18 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:56:18,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-24 21:56:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-24 21:56:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 43 states have internal predecessors, (47), 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 21:56:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2023-11-24 21:56:18,325 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 3 [2023-11-24 21:56:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:18,328 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2023-11-24 21:56:18,328 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 21:56:18,328 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2023-11-24 21:56:18,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 21:56:18,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:18,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 21:56:18,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:56:18,330 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-24 21:56:18,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:18,335 INFO L85 PathProgramCache]: Analyzing trace with hash 117343, now seen corresponding path program 1 times [2023-11-24 21:56:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:18,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345573862] [2023-11-24 21:56:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:18,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:18,515 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 21:56:18,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:18,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345573862] [2023-11-24 21:56:18,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345573862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:18,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:18,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:56:18,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139724998] [2023-11-24 21:56:18,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:18,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:56:18,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:18,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:56:18,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:56:18,519 INFO L87 Difference]: Start difference. First operand 44 states and 47 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 21:56:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:18,582 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2023-11-24 21:56:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:56:18,583 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 21:56:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:18,584 INFO L225 Difference]: With dead ends: 39 [2023-11-24 21:56:18,584 INFO L226 Difference]: Without dead ends: 39 [2023-11-24 21:56:18,585 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 21:56:18,592 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 38 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:18,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 19 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:56:18,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-24 21:56:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-24 21:56:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 38 states have internal predecessors, (42), 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 21:56:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2023-11-24 21:56:18,604 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 3 [2023-11-24 21:56:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:18,604 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2023-11-24 21:56:18,605 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 21:56:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2023-11-24 21:56:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 21:56:18,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:18,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 21:56:18,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:56:18,606 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-24 21:56:18,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash 3637581, now seen corresponding path program 1 times [2023-11-24 21:56:18,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:18,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476538811] [2023-11-24 21:56:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:18,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:18,673 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 21:56:18,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:18,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476538811] [2023-11-24 21:56:18,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476538811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:18,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:18,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:56:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047159672] [2023-11-24 21:56:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:18,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:56:18,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:18,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:56:18,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:56:18,678 INFO L87 Difference]: Start difference. First operand 39 states and 42 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 21:56:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:18,733 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2023-11-24 21:56:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:56:18,734 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 21:56:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:18,736 INFO L225 Difference]: With dead ends: 31 [2023-11-24 21:56:18,736 INFO L226 Difference]: Without dead ends: 31 [2023-11-24 21:56:18,737 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 21:56:18,737 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:18,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 10 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:56:18,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-24 21:56:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-24 21:56:18,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 30 states have internal predecessors, (34), 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 21:56:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-11-24 21:56:18,747 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 4 [2023-11-24 21:56:18,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:18,748 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-11-24 21:56:18,748 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 21:56:18,748 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-11-24 21:56:18,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 21:56:18,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:18,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 21:56:18,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:56:18,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-24 21:56:18,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:18,751 INFO L85 PathProgramCache]: Analyzing trace with hash 3637582, now seen corresponding path program 1 times [2023-11-24 21:56:18,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:18,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526670439] [2023-11-24 21:56:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:18,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:18,869 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 21:56:18,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:18,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526670439] [2023-11-24 21:56:18,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526670439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:18,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:18,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:56:18,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208611351] [2023-11-24 21:56:18,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:18,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:56:18,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:18,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:56:18,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:56:18,873 INFO L87 Difference]: Start difference. First operand 31 states and 34 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 21:56:18,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:18,917 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-11-24 21:56:18,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:56:18,918 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 21:56:18,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:18,918 INFO L225 Difference]: With dead ends: 23 [2023-11-24 21:56:18,919 INFO L226 Difference]: Without dead ends: 23 [2023-11-24 21:56:18,919 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 21:56:18,920 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:18,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:56:18,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-24 21:56:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-24 21:56:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 21:56:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-11-24 21:56:18,924 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 4 [2023-11-24 21:56:18,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:18,924 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-11-24 21:56:18,924 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 21:56:18,924 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-11-24 21:56:18,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 21:56:18,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:18,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:18,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:56:18,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-24 21:56:18,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash 766746315, now seen corresponding path program 1 times [2023-11-24 21:56:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:18,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573338778] [2023-11-24 21:56:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:19,195 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 21:56:19,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:19,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573338778] [2023-11-24 21:56:19,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573338778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:19,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:19,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:56:19,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687339644] [2023-11-24 21:56:19,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:19,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:56:19,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:19,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:56:19,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:56:19,198 INFO L87 Difference]: Start difference. First operand 23 states and 26 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 21:56:19,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:19,247 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2023-11-24 21:56:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:56:19,248 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 21:56:19,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:19,248 INFO L225 Difference]: With dead ends: 22 [2023-11-24 21:56:19,248 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 21:56:19,249 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 21:56:19,249 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:19,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 17 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:56:19,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 21:56:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 21:56:19,251 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 21:56:19,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 21:56:19,251 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2023-11-24 21:56:19,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:19,252 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 21:56:19,252 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 21:56:19,252 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 21:56:19,252 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 21:56:19,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 31 remaining) [2023-11-24 21:56:19,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 31 remaining) [2023-11-24 21:56:19,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2023-11-24 21:56:19,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2023-11-24 21:56:19,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 31 remaining) [2023-11-24 21:56:19,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 31 remaining) [2023-11-24 21:56:19,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2023-11-24 21:56:19,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2023-11-24 21:56:19,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2023-11-24 21:56:19,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2023-11-24 21:56:19,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 31 remaining) [2023-11-24 21:56:19,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 31 remaining) [2023-11-24 21:56:19,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 31 remaining) [2023-11-24 21:56:19,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2023-11-24 21:56:19,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2023-11-24 21:56:19,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2023-11-24 21:56:19,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2023-11-24 21:56:19,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2023-11-24 21:56:19,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2023-11-24 21:56:19,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 31 remaining) [2023-11-24 21:56:19,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 31 remaining) [2023-11-24 21:56:19,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 31 remaining) [2023-11-24 21:56:19,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 31 remaining) [2023-11-24 21:56:19,261 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2023-11-24 21:56:19,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2023-11-24 21:56:19,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2023-11-24 21:56:19,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2023-11-24 21:56:19,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2023-11-24 21:56:19,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2023-11-24 21:56:19,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 31 remaining) [2023-11-24 21:56:19,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (0 of 31 remaining) [2023-11-24 21:56:19,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:56:19,267 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:19,269 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:56:19,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:56:19 BoogieIcfgContainer [2023-11-24 21:56:19,273 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:56:19,274 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:56:19,274 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:56:19,274 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:56:19,275 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:56:16" (3/4) ... [2023-11-24 21:56:19,278 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:56:19,291 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-11-24 21:56:19,291 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-24 21:56:19,291 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:56:19,292 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 21:56:19,407 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:56:19,407 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:56:19,407 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:56:19,408 INFO L158 Benchmark]: Toolchain (without parser) took 3744.58ms. Allocated memory was 146.8MB in the beginning and 182.5MB in the end (delta: 35.7MB). Free memory was 101.3MB in the beginning and 60.0MB in the end (delta: 41.3MB). Peak memory consumption was 75.8MB. Max. memory is 16.1GB. [2023-11-24 21:56:19,408 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 146.8MB. Free memory was 94.3MB in the beginning and 94.2MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:56:19,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.33ms. Allocated memory is still 146.8MB. Free memory was 101.3MB in the beginning and 84.9MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 21:56:19,409 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.39ms. Allocated memory is still 146.8MB. Free memory was 84.9MB in the beginning and 82.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:56:19,409 INFO L158 Benchmark]: Boogie Preprocessor took 93.26ms. Allocated memory is still 146.8MB. Free memory was 82.9MB in the beginning and 80.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:56:19,410 INFO L158 Benchmark]: RCFGBuilder took 620.45ms. Allocated memory was 146.8MB in the beginning and 182.5MB in the end (delta: 35.7MB). Free memory was 80.8MB in the beginning and 147.7MB in the end (delta: -66.9MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2023-11-24 21:56:19,410 INFO L158 Benchmark]: TraceAbstraction took 2339.47ms. Allocated memory is still 182.5MB. Free memory was 146.8MB in the beginning and 65.2MB in the end (delta: 81.5MB). Peak memory consumption was 80.2MB. Max. memory is 16.1GB. [2023-11-24 21:56:19,411 INFO L158 Benchmark]: Witness Printer took 133.20ms. Allocated memory is still 182.5MB. Free memory was 65.2MB in the beginning and 60.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:56:19,413 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 146.8MB. Free memory was 94.3MB in the beginning and 94.2MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.33ms. Allocated memory is still 146.8MB. Free memory was 101.3MB in the beginning and 84.9MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.39ms. Allocated memory is still 146.8MB. Free memory was 84.9MB in the beginning and 82.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.26ms. Allocated memory is still 146.8MB. Free memory was 82.9MB in the beginning and 80.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 620.45ms. Allocated memory was 146.8MB in the beginning and 182.5MB in the end (delta: 35.7MB). Free memory was 80.8MB in the beginning and 147.7MB in the end (delta: -66.9MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2339.47ms. Allocated memory is still 182.5MB. Free memory was 146.8MB in the beginning and 65.2MB in the end (delta: 81.5MB). Peak memory consumption was 80.2MB. Max. memory is 16.1GB. * Witness Printer took 133.20ms. Allocated memory is still 182.5MB. Free memory was 65.2MB in the beginning and 60.0MB in the end (delta: 5.2MB). 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: -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: 566]: 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, 54 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 237 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 237 mSDsluCounter, 122 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 206 IncrementalHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 111 mSDtfsCounter, 206 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 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 31 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:56:19,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a70aff2-4425-48e5-97fa-12e2762893fc/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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