./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-dietlibc/strchr-1.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_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-dietlibc/strchr-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme --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 c72d4b54465b49a8be7d6b67decf7d9407d163e58bb229fc2ca0587a37abb515 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:35,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:35,519 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-26 11:55:35,525 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:35,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:35,549 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:35,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:35,551 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:35,552 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:35,552 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:35,553 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:35,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:35,554 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:35,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:35,556 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:35,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:35,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:55:35,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:35,558 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:55:35,559 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:55:35,559 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:55:35,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:35,560 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:55:35,561 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:55:35,561 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:35,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:35,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:35,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:35,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:35,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:35,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:35,565 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:35,565 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:55:35,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:55:35,566 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:35,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:35,566 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:35,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:35,567 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_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c72d4b54465b49a8be7d6b67decf7d9407d163e58bb229fc2ca0587a37abb515 [2023-11-26 11:55:35,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:35,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:35,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:35,854 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:35,854 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:35,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-dietlibc/strchr-1.i [2023-11-26 11:55:38,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:39,205 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:39,206 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/sv-benchmarks/c/termination-dietlibc/strchr-1.i [2023-11-26 11:55:39,221 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/data/f08f3b969/3bed1d7362114528b50ee7528d6e90f9/FLAG508274bdd [2023-11-26 11:55:39,244 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/data/f08f3b969/3bed1d7362114528b50ee7528d6e90f9 [2023-11-26 11:55:39,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:39,249 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:39,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:39,251 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:39,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:39,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535b6233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39, skipping insertion in model container [2023-11-26 11:55:39,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,310 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:39,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:39,621 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:55:39,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:39,732 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:55:39,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39 WrapperNode [2023-11-26 11:55:39,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:39,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:39,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:55:39,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:55:39,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,813 INFO L138 Inliner]: procedures = 113, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2023-11-26 11:55:39,813 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:39,814 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:55:39,814 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:55:39,815 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:55:39,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,863 INFO L175 MemorySlicer]: Split 9 memory accesses to 1 slices as follows [9]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 1 writes are split as follows [1]. [2023-11-26 11:55:39,864 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:55:39,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:55:39,889 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:55:39,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:55:39,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:39,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:39,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:55:39,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:55:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:55:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:55:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:55:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:55:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:55:39,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:55:40,103 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:55:40,111 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:55:40,412 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:55:40,444 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:55:40,444 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:55:40,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:40 BoogieIcfgContainer [2023-11-26 11:55:40,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:55:40,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:55:40,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:55:40,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:55:40,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:55:39" (1/3) ... [2023-11-26 11:55:40,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ee03ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:40, skipping insertion in model container [2023-11-26 11:55:40,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39" (2/3) ... [2023-11-26 11:55:40,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ee03ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:40, skipping insertion in model container [2023-11-26 11:55:40,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:40" (3/3) ... [2023-11-26 11:55:40,458 INFO L112 eAbstractionObserver]: Analyzing ICFG strchr-1.i [2023-11-26 11:55:40,477 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:55:40,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-11-26 11:55:40,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:55:40,525 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;@14a12ec6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:55:40,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-26 11:55:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 42 states have internal predecessors, (53), 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) [2023-11-26 11:55:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:55:40,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:40,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:55:40,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2023-11-26 11:55:40,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 121333, now seen corresponding path program 1 times [2023-11-26 11:55:40,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:40,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051580618] [2023-11-26 11:55:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:40,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:40,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:40,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051580618] [2023-11-26 11:55:40,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051580618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:40,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:40,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:55:40,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548971094] [2023-11-26 11:55:40,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:40,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:40,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:40,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:40,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:40,730 INFO L87 Difference]: Start difference. First operand has 43 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 42 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 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) [2023-11-26 11:55:40,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:40,833 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2023-11-26 11:55:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:40,836 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 [2023-11-26 11:55:40,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:40,845 INFO L225 Difference]: With dead ends: 44 [2023-11-26 11:55:40,845 INFO L226 Difference]: Without dead ends: 42 [2023-11-26 11:55:40,847 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 [2023-11-26 11:55:40,851 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:40,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 74 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:40,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-26 11:55:40,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-11-26 11:55:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 23 states have (on average 2.130434782608696) internal successors, (49), 41 states have internal predecessors, (49), 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) [2023-11-26 11:55:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2023-11-26 11:55:40,900 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 3 [2023-11-26 11:55:40,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:40,900 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2023-11-26 11:55:40,901 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) [2023-11-26 11:55:40,901 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2023-11-26 11:55:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:55:40,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:40,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:55:40,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:55:40,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2023-11-26 11:55:40,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash 121312, now seen corresponding path program 1 times [2023-11-26 11:55:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:40,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865986158] [2023-11-26 11:55:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:40,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:41,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:41,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865986158] [2023-11-26 11:55:41,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865986158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:41,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:41,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:55:41,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111864332] [2023-11-26 11:55:41,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:41,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:41,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:41,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:41,030 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:41,096 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2023-11-26 11:55:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:41,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-26 11:55:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:41,100 INFO L225 Difference]: With dead ends: 41 [2023-11-26 11:55:41,101 INFO L226 Difference]: Without dead ends: 41 [2023-11-26 11:55:41,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:41,105 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:41,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 28 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:41,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-26 11:55:41,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-26 11:55:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 40 states have internal predecessors, (48), 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) [2023-11-26 11:55:41,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2023-11-26 11:55:41,122 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 3 [2023-11-26 11:55:41,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:41,123 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2023-11-26 11:55:41,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,123 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2023-11-26 11:55:41,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:55:41,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:41,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:55:41,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:55:41,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2023-11-26 11:55:41,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:41,128 INFO L85 PathProgramCache]: Analyzing trace with hash 121313, now seen corresponding path program 1 times [2023-11-26 11:55:41,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:41,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117936277] [2023-11-26 11:55:41,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:41,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:41,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:41,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117936277] [2023-11-26 11:55:41,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117936277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:41,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:41,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:55:41,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074544017] [2023-11-26 11:55:41,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:41,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:41,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:41,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:41,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:41,427 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:41,483 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2023-11-26 11:55:41,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:41,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-26 11:55:41,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:41,485 INFO L225 Difference]: With dead ends: 40 [2023-11-26 11:55:41,485 INFO L226 Difference]: Without dead ends: 40 [2023-11-26 11:55:41,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:41,487 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 90 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:41,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 28 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-26 11:55:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-26 11:55:41,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 39 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) [2023-11-26 11:55:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2023-11-26 11:55:41,493 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 3 [2023-11-26 11:55:41,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:41,493 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2023-11-26 11:55:41,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2023-11-26 11:55:41,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 11:55:41,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:41,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:55:41,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:55:41,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2023-11-26 11:55:41,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:41,496 INFO L85 PathProgramCache]: Analyzing trace with hash 116666010, now seen corresponding path program 1 times [2023-11-26 11:55:41,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:41,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500672785] [2023-11-26 11:55:41,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:41,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:41,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:41,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500672785] [2023-11-26 11:55:41,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500672785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:41,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:41,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:55:41,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579994731] [2023-11-26 11:55:41,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:41,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:41,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:41,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:41,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:41,598 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:41,651 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2023-11-26 11:55:41,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:41,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-26 11:55:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:41,653 INFO L225 Difference]: With dead ends: 32 [2023-11-26 11:55:41,653 INFO L226 Difference]: Without dead ends: 32 [2023-11-26 11:55:41,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:41,655 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:41,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 15 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:41,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-26 11:55:41,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-26 11:55:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 31 states have internal predecessors, (39), 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) [2023-11-26 11:55:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-11-26 11:55:41,661 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 5 [2023-11-26 11:55:41,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:41,661 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-11-26 11:55:41,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-11-26 11:55:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 11:55:41,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:41,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:55:41,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:55:41,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2023-11-26 11:55:41,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash 116666011, now seen corresponding path program 1 times [2023-11-26 11:55:41,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:41,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924320563] [2023-11-26 11:55:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:41,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:41,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:41,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924320563] [2023-11-26 11:55:41,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924320563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:41,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:41,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:41,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963702908] [2023-11-26 11:55:41,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:41,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:41,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:41,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:41,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:41,892 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:41,956 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2023-11-26 11:55:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:41,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-26 11:55:41,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:41,958 INFO L225 Difference]: With dead ends: 39 [2023-11-26 11:55:41,958 INFO L226 Difference]: Without dead ends: 39 [2023-11-26 11:55:41,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:41,960 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 52 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:41,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 47 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-26 11:55:41,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2023-11-26 11:55:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 35 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2023-11-26 11:55:41,969 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 5 [2023-11-26 11:55:41,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:41,970 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2023-11-26 11:55:41,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,970 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-11-26 11:55:41,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 11:55:41,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:41,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:41,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:55:41,972 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2023-11-26 11:55:41,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:41,973 INFO L85 PathProgramCache]: Analyzing trace with hash -39457542, now seen corresponding path program 1 times [2023-11-26 11:55:41,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:41,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233589012] [2023-11-26 11:55:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:41,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:42,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:42,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233589012] [2023-11-26 11:55:42,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233589012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:42,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:42,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:55:42,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028567687] [2023-11-26 11:55:42,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:42,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:42,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:42,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:42,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:42,149 INFO L87 Difference]: Start difference. First operand 36 states and 44 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) [2023-11-26 11:55:42,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:42,191 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2023-11-26 11:55:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:42,192 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 [2023-11-26 11:55:42,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:42,195 INFO L225 Difference]: With dead ends: 35 [2023-11-26 11:55:42,195 INFO L226 Difference]: Without dead ends: 32 [2023-11-26 11:55:42,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:42,201 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:42,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 52 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:42,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-26 11:55:42,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-26 11:55:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2023-11-26 11:55:42,215 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 9 [2023-11-26 11:55:42,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:42,215 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2023-11-26 11:55:42,215 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) [2023-11-26 11:55:42,215 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2023-11-26 11:55:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 11:55:42,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:42,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:42,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:55:42,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2023-11-26 11:55:42,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:42,217 INFO L85 PathProgramCache]: Analyzing trace with hash -39457379, now seen corresponding path program 1 times [2023-11-26 11:55:42,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:42,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854242146] [2023-11-26 11:55:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:42,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:42,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:42,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854242146] [2023-11-26 11:55:42,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854242146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:42,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:42,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:42,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614266941] [2023-11-26 11:55:42,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:42,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:42,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:42,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:42,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:42,573 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2023-11-26 11:55:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:42,779 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2023-11-26 11:55:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:55:42,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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 [2023-11-26 11:55:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:42,780 INFO L225 Difference]: With dead ends: 37 [2023-11-26 11:55:42,780 INFO L226 Difference]: Without dead ends: 37 [2023-11-26 11:55:42,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:55:42,782 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 39 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:42,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 23 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:42,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-26 11:55:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2023-11-26 11:55:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 35 states have internal predecessors, (36), 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) [2023-11-26 11:55:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2023-11-26 11:55:42,786 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 9 [2023-11-26 11:55:42,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:42,787 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2023-11-26 11:55:42,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2023-11-26 11:55:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2023-11-26 11:55:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 11:55:42,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:42,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:42,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:55:42,788 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2023-11-26 11:55:42,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:42,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1216094305, now seen corresponding path program 1 times [2023-11-26 11:55:42,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:42,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595682511] [2023-11-26 11:55:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:42,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:43,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:43,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595682511] [2023-11-26 11:55:43,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595682511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:43,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:43,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:55:43,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855363514] [2023-11-26 11:55:43,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:43,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:55:43,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:43,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:55:43,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:43,238 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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) [2023-11-26 11:55:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:43,495 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2023-11-26 11:55:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:55:43,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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 13 [2023-11-26 11:55:43,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:43,496 INFO L225 Difference]: With dead ends: 41 [2023-11-26 11:55:43,497 INFO L226 Difference]: Without dead ends: 41 [2023-11-26 11:55:43,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:55:43,498 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:43,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 27 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:43,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-26 11:55:43,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-11-26 11:55:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.25) internal successors, (40), 39 states have internal predecessors, (40), 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) [2023-11-26 11:55:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2023-11-26 11:55:43,502 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 13 [2023-11-26 11:55:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:43,503 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2023-11-26 11:55:43,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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) [2023-11-26 11:55:43,503 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2023-11-26 11:55:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 11:55:43,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:43,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:43,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:55:43,504 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2023-11-26 11:55:43,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:43,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1925413727, now seen corresponding path program 1 times [2023-11-26 11:55:43,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:43,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704491575] [2023-11-26 11:55:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:43,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:44,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:44,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704491575] [2023-11-26 11:55:44,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704491575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:44,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:44,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:55:44,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993640786] [2023-11-26 11:55:44,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:44,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:55:44,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:44,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:55:44,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:55:44,016 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 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) [2023-11-26 11:55:44,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:44,319 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2023-11-26 11:55:44,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:55:44,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 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 17 [2023-11-26 11:55:44,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:44,320 INFO L225 Difference]: With dead ends: 45 [2023-11-26 11:55:44,320 INFO L226 Difference]: Without dead ends: 45 [2023-11-26 11:55:44,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:55:44,322 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 48 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:44,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 31 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:44,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-26 11:55:44,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2023-11-26 11:55:44,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 43 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:44,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2023-11-26 11:55:44,326 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 17 [2023-11-26 11:55:44,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:44,326 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2023-11-26 11:55:44,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 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) [2023-11-26 11:55:44,327 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2023-11-26 11:55:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 11:55:44,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:44,328 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:44,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:55:44,328 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2023-11-26 11:55:44,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:44,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1416810570, now seen corresponding path program 1 times [2023-11-26 11:55:44,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:44,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193850195] [2023-11-26 11:55:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:44,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:45,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:45,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:45,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193850195] [2023-11-26 11:55:45,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193850195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:45,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862303039] [2023-11-26 11:55:45,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:45,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:45,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:45,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:45,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:55:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:45,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-26 11:55:45,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:45,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-26 11:55:46,648 INFO L349 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2023-11-26 11:55:46,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 51 [2023-11-26 11:55:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:46,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:47,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2023-11-26 11:55:47,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2023-11-26 11:55:47,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-26 11:55:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:47,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862303039] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:47,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:55:47,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-26 11:55:47,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534091184] [2023-11-26 11:55:47,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:47,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-26 11:55:47,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:47,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-26 11:55:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2023-11-26 11:55:47,622 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 30 states, 29 states have (on average 2.103448275862069) internal successors, (61), 30 states have internal predecessors, (61), 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) [2023-11-26 11:55:49,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:49,093 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2023-11-26 11:55:49,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:55:49,095 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.103448275862069) internal successors, (61), 30 states have internal predecessors, (61), 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 22 [2023-11-26 11:55:49,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:49,095 INFO L225 Difference]: With dead ends: 46 [2023-11-26 11:55:49,095 INFO L226 Difference]: Without dead ends: 46 [2023-11-26 11:55:49,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=297, Invalid=1343, Unknown=0, NotChecked=0, Total=1640 [2023-11-26 11:55:49,097 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 106 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:49,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 133 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:55:49,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-26 11:55:49,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2023-11-26 11:55:49,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 42 states have internal predecessors, (43), 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) [2023-11-26 11:55:49,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2023-11-26 11:55:49,105 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 22 [2023-11-26 11:55:49,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:49,106 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2023-11-26 11:55:49,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.103448275862069) internal successors, (61), 30 states have internal predecessors, (61), 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) [2023-11-26 11:55:49,108 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2023-11-26 11:55:49,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-26 11:55:49,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:49,110 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:49,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:49,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:55:49,317 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2023-11-26 11:55:49,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:49,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1118639816, now seen corresponding path program 1 times [2023-11-26 11:55:49,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:49,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51514591] [2023-11-26 11:55:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:49,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:50,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:50,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51514591] [2023-11-26 11:55:50,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51514591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:50,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911630695] [2023-11-26 11:55:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:50,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:50,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:50,015 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:50,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:55:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:50,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-26 11:55:50,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:50,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-26 11:55:51,520 INFO L349 Elim1Store]: treesize reduction 16, result has 71.4 percent of original size [2023-11-26 11:55:51,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 62 [2023-11-26 11:55:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:51,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:52,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 64 [2023-11-26 11:55:52,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 96 [2023-11-26 11:55:52,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-26 11:55:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:52,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911630695] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:52,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:55:52,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 34 [2023-11-26 11:55:52,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381644292] [2023-11-26 11:55:52,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:52,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-26 11:55:52,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:52,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-26 11:55:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2023-11-26 11:55:52,726 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 35 states, 34 states have (on average 2.176470588235294) internal successors, (74), 35 states have internal predecessors, (74), 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) [2023-11-26 11:55:54,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:54,950 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2023-11-26 11:55:54,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 11:55:54,951 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.176470588235294) internal successors, (74), 35 states have internal predecessors, (74), 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 26 [2023-11-26 11:55:54,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:54,951 INFO L225 Difference]: With dead ends: 42 [2023-11-26 11:55:54,951 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 11:55:54,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=496, Invalid=2054, Unknown=0, NotChecked=0, Total=2550 [2023-11-26 11:55:54,953 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 116 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:54,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 154 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:55:54,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 11:55:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 11:55:54,954 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) [2023-11-26 11:55:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 11:55:54,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2023-11-26 11:55:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:54,955 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:55:54,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.176470588235294) internal successors, (74), 35 states have internal predecessors, (74), 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) [2023-11-26 11:55:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 11:55:54,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 11:55:54,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 19 remaining) [2023-11-26 11:55:54,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 19 remaining) [2023-11-26 11:55:54,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 19 remaining) [2023-11-26 11:55:54,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 19 remaining) [2023-11-26 11:55:54,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 19 remaining) [2023-11-26 11:55:54,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 19 remaining) [2023-11-26 11:55:54,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 19 remaining) [2023-11-26 11:55:54,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 19 remaining) [2023-11-26 11:55:54,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 19 remaining) [2023-11-26 11:55:54,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 19 remaining) [2023-11-26 11:55:54,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 19 remaining) [2023-11-26 11:55:54,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 19 remaining) [2023-11-26 11:55:54,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 19 remaining) [2023-11-26 11:55:54,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 19 remaining) [2023-11-26 11:55:54,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 19 remaining) [2023-11-26 11:55:54,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 19 remaining) [2023-11-26 11:55:54,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 19 remaining) [2023-11-26 11:55:54,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 19 remaining) [2023-11-26 11:55:54,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (0 of 19 remaining) [2023-11-26 11:55:54,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:55,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:55,172 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:55,175 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:55:55,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:55:55 BoogieIcfgContainer [2023-11-26 11:55:55,179 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:55:55,179 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:55:55,179 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:55:55,179 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:55:55,180 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:40" (3/4) ... [2023-11-26 11:55:55,183 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:55:55,199 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-26 11:55:55,199 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 11:55:55,200 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 11:55:55,200 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 11:55:55,292 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:55:55,293 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:55:55,293 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:55:55,294 INFO L158 Benchmark]: Toolchain (without parser) took 16045.18ms. Allocated memory was 155.2MB in the beginning and 255.9MB in the end (delta: 100.7MB). Free memory was 114.8MB in the beginning and 179.8MB in the end (delta: -65.0MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2023-11-26 11:55:55,295 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 155.2MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:55:55,295 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.60ms. Allocated memory is still 155.2MB. Free memory was 114.2MB in the beginning and 98.0MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 11:55:55,295 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.16ms. Allocated memory is still 155.2MB. Free memory was 98.0MB in the beginning and 95.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:55:55,296 INFO L158 Benchmark]: Boogie Preprocessor took 73.99ms. Allocated memory is still 155.2MB. Free memory was 95.9MB in the beginning and 93.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:55:55,297 INFO L158 Benchmark]: RCFGBuilder took 556.30ms. Allocated memory is still 155.2MB. Free memory was 93.8MB in the beginning and 77.9MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 11:55:55,297 INFO L158 Benchmark]: TraceAbstraction took 14727.38ms. Allocated memory was 155.2MB in the beginning and 255.9MB in the end (delta: 100.7MB). Free memory was 77.1MB in the beginning and 185.1MB in the end (delta: -108.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:55:55,298 INFO L158 Benchmark]: Witness Printer took 114.05ms. Allocated memory is still 255.9MB. Free memory was 185.1MB in the beginning and 179.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 11:55:55,303 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 155.2MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.60ms. Allocated memory is still 155.2MB. Free memory was 114.2MB in the beginning and 98.0MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.16ms. Allocated memory is still 155.2MB. Free memory was 98.0MB in the beginning and 95.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.99ms. Allocated memory is still 155.2MB. Free memory was 95.9MB in the beginning and 93.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 556.30ms. Allocated memory is still 155.2MB. Free memory was 93.8MB in the beginning and 77.9MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 14727.38ms. Allocated memory was 155.2MB in the beginning and 255.9MB in the end (delta: 100.7MB). Free memory was 77.1MB in the beginning and 185.1MB in the end (delta: -108.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 114.05ms. Allocated memory is still 255.9MB. Free memory was 185.1MB in the beginning and 179.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: 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, 43 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 14.7s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 599 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 599 mSDsluCounter, 612 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 393 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1303 IncrementalHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 219 mSDtfsCounter, 1303 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=9, InterpolantAutomatonStates: 75, 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, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 196 ConstructedInterpolants, 37 QuantifiedInterpolants, 4969 SizeOfPredicates, 22 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 15 InterpolantComputations, 9 PerfectInterpolantSequences, 4/24 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 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:55:55,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c0c14e7-a80d-453b-a9df-d2974d706a20/bin/uautomizer-verify-VRDe98Ueme/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