./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrcat-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrcat-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd --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 32bit --witnessprinter.graph.data.programhash bfd8ca9d9dda86f57445168715d124831c95b647e7c1b1093bb129b0384cce9e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:43:56,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:43:56,601 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 12:43:56,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:43:56,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:43:56,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:43:56,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:43:56,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:43:56,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 12:43:56,649 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 12:43:56,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:43:56,650 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:43:56,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:43:56,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:43:56,651 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:43:56,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:43:56,652 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:43:56,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:43:56,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:43:56,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:43:56,652 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 12:43:56,652 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 12:43:56,652 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 12:43:56,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:43:56,653 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 12:43:56,653 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:43:56,653 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 12:43:56,653 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:43:56,653 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:43:56,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:43:56,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:43:56,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:43:56,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:43:56,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:43:56,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:43:56,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:43:56,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:43:56,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:43:56,656 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:43:56,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:43:56,656 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:43:56,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:43:56,656 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfd8ca9d9dda86f57445168715d124831c95b647e7c1b1093bb129b0384cce9e [2024-11-13 12:43:57,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:43:57,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:43:57,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:43:57,023 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:43:57,023 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:43:57,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-memsafety/cstrcat-alloca-2.i Unable to find full path for "g++" [2024-11-13 12:43:59,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:43:59,484 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:43:59,491 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/sv-benchmarks/c/array-memsafety/cstrcat-alloca-2.i [2024-11-13 12:43:59,519 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/data/f0c2d0792/cecf2917cc8d415b9022d83de69ff2d8/FLAG898601068 [2024-11-13 12:43:59,554 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/data/f0c2d0792/cecf2917cc8d415b9022d83de69ff2d8 [2024-11-13 12:43:59,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:43:59,566 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:43:59,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:43:59,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:43:59,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:43:59,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:43:59" (1/1) ... [2024-11-13 12:43:59,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce4465f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:43:59, skipping insertion in model container [2024-11-13 12:43:59,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:43:59" (1/1) ... [2024-11-13 12:43:59,627 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:44:00,026 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 12:44:00,027 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 12:44:00,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:44:00,046 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:44:00,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:44:00,152 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:44:00,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00 WrapperNode [2024-11-13 12:44:00,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:44:00,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:44:00,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:44:00,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:44:00,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (1/1) ... [2024-11-13 12:44:00,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (1/1) ... [2024-11-13 12:44:00,187 INFO L138 Inliner]: procedures = 117, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2024-11-13 12:44:00,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:44:00,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:44:00,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:44:00,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:44:00,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (1/1) ... [2024-11-13 12:44:00,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (1/1) ... [2024-11-13 12:44:00,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (1/1) ... [2024-11-13 12:44:00,234 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [4, 3]. 57 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 5 writes are split as follows [3, 2]. [2024-11-13 12:44:00,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (1/1) ... [2024-11-13 12:44:00,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (1/1) ... [2024-11-13 12:44:00,248 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (1/1) ... [2024-11-13 12:44:00,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (1/1) ... [2024-11-13 12:44:00,252 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (1/1) ... [2024-11-13 12:44:00,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (1/1) ... [2024-11-13 12:44:00,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:44:00,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:44:00,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:44:00,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:44:00,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (1/1) ... [2024-11-13 12:44:00,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:44:00,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:00,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:44:00,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:44:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 12:44:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 12:44:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 12:44:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 12:44:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 12:44:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 12:44:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:44:00,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:44:00,476 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:44:00,478 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:44:00,820 INFO L? ?]: Removed 59 outVars from TransFormulas that were not future-live. [2024-11-13 12:44:00,821 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:44:00,839 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:44:00,839 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 12:44:00,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:44:00 BoogieIcfgContainer [2024-11-13 12:44:00,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:44:00,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:44:00,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:44:00,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:44:00,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:43:59" (1/3) ... [2024-11-13 12:44:00,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce5b25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:44:00, skipping insertion in model container [2024-11-13 12:44:00,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:00" (2/3) ... [2024-11-13 12:44:00,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce5b25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:44:00, skipping insertion in model container [2024-11-13 12:44:00,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:44:00" (3/3) ... [2024-11-13 12:44:00,854 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrcat-alloca-2.i [2024-11-13 12:44:00,874 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:44:00,877 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG cstrcat-alloca-2.i that has 1 procedures, 43 locations, 1 initial locations, 4 loop locations, and 15 error locations. [2024-11-13 12:44:00,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:44:00,951 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@6970ed86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:44:00,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-13 12:44:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 27 states have (on average 2.0) internal successors, (54), 42 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 12:44:00,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:00,966 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:00,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:00,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:00,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1805031093, now seen corresponding path program 1 times [2024-11-13 12:44:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:00,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206627446] [2024-11-13 12:44:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:00,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:01,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:01,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206627446] [2024-11-13 12:44:01,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206627446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:01,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:01,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:44:01,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845031568] [2024-11-13 12:44:01,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:01,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:44:01,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:01,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:44:01,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:44:01,397 INFO L87 Difference]: Start difference. First operand has 43 states, 27 states have (on average 2.0) internal successors, (54), 42 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-11-13 12:44:01,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:01,609 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2024-11-13 12:44:01,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:44:01,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2024-11-13 12:44:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:01,624 INFO L225 Difference]: With dead ends: 72 [2024-11-13 12:44:01,624 INFO L226 Difference]: Without dead ends: 70 [2024-11-13 12:44:01,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:44:01,630 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 75 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:01,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 150 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-13 12:44:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 44. [2024-11-13 12:44:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 43 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) [2024-11-13 12:44:01,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-11-13 12:44:01,671 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 7 [2024-11-13 12:44:01,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:01,673 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-11-13 12:44:01,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-11-13 12:44:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-11-13 12:44:01,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 12:44:01,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:01,676 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:01,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 12:44:01,677 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:01,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:01,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1805033015, now seen corresponding path program 1 times [2024-11-13 12:44:01,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:01,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736214673] [2024-11-13 12:44:01,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:01,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:01,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:01,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736214673] [2024-11-13 12:44:01,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736214673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:01,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:01,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:44:01,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905002292] [2024-11-13 12:44:01,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:01,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:44:01,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:01,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:44:01,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:44:01,751 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-13 12:44:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:01,821 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2024-11-13 12:44:01,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:44:01,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-11-13 12:44:01,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:01,824 INFO L225 Difference]: With dead ends: 45 [2024-11-13 12:44:01,824 INFO L226 Difference]: Without dead ends: 44 [2024-11-13 12:44:01,824 INFO L431 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 [2024-11-13 12:44:01,825 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:01,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 69 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:01,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-13 12:44:01,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2024-11-13 12:44:01,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 40 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) [2024-11-13 12:44:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-11-13 12:44:01,835 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 7 [2024-11-13 12:44:01,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:01,835 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-11-13 12:44:01,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-13 12:44:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-11-13 12:44:01,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 12:44:01,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:01,836 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:01,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 12:44:01,837 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:01,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:01,842 INFO L85 PathProgramCache]: Analyzing trace with hash 121388915, now seen corresponding path program 1 times [2024-11-13 12:44:01,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:01,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069356402] [2024-11-13 12:44:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:01,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:01,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:01,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069356402] [2024-11-13 12:44:01,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069356402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:01,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:01,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:44:01,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373324287] [2024-11-13 12:44:01,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:01,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:44:01,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:01,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:44:01,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:01,992 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-13 12:44:02,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:02,035 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2024-11-13 12:44:02,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:44:02,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2024-11-13 12:44:02,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:02,038 INFO L225 Difference]: With dead ends: 54 [2024-11-13 12:44:02,038 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 12:44:02,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:02,040 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:02,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 94 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:44:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 12:44:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2024-11-13 12:44:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 44 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) [2024-11-13 12:44:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-11-13 12:44:02,046 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 8 [2024-11-13 12:44:02,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:02,046 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-11-13 12:44:02,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-13 12:44:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-11-13 12:44:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 12:44:02,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:02,047 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:02,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 12:44:02,047 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:02,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 178647217, now seen corresponding path program 1 times [2024-11-13 12:44:02,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:02,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132289673] [2024-11-13 12:44:02,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:02,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:02,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:02,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132289673] [2024-11-13 12:44:02,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132289673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:02,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:02,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:44:02,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556061133] [2024-11-13 12:44:02,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:02,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:44:02,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:02,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:44:02,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:44:02,216 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-11-13 12:44:02,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:02,319 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2024-11-13 12:44:02,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:44:02,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2024-11-13 12:44:02,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:02,321 INFO L225 Difference]: With dead ends: 57 [2024-11-13 12:44:02,323 INFO L226 Difference]: Without dead ends: 57 [2024-11-13 12:44:02,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:44:02,325 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 18 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:02,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 154 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:02,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-13 12:44:02,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2024-11-13 12:44:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 44 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) [2024-11-13 12:44:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-11-13 12:44:02,333 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 8 [2024-11-13 12:44:02,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:02,335 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-11-13 12:44:02,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-11-13 12:44:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-11-13 12:44:02,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 12:44:02,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:02,338 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:02,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 12:44:02,338 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:02,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:02,339 INFO L85 PathProgramCache]: Analyzing trace with hash 180494259, now seen corresponding path program 1 times [2024-11-13 12:44:02,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:02,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896345290] [2024-11-13 12:44:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:02,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:02,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:02,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:02,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896345290] [2024-11-13 12:44:02,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896345290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:02,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:02,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:44:02,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161028644] [2024-11-13 12:44:02,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:02,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:44:02,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:44:02,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:44:02,518 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-13 12:44:02,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:02,572 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2024-11-13 12:44:02,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:44:02,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-13 12:44:02,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:02,573 INFO L225 Difference]: With dead ends: 43 [2024-11-13 12:44:02,573 INFO L226 Difference]: Without dead ends: 43 [2024-11-13 12:44:02,574 INFO L431 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 [2024-11-13 12:44:02,575 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 15 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:02,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:44:02,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-13 12:44:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-13 12:44:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.7) internal successors, (51), 42 states have internal predecessors, (51), 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) [2024-11-13 12:44:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-11-13 12:44:02,586 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 8 [2024-11-13 12:44:02,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:02,586 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-11-13 12:44:02,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-13 12:44:02,587 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-11-13 12:44:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 12:44:02,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:02,587 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:02,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 12:44:02,587 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:02,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:02,588 INFO L85 PathProgramCache]: Analyzing trace with hash 180494260, now seen corresponding path program 1 times [2024-11-13 12:44:02,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:02,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207918901] [2024-11-13 12:44:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:02,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:02,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:02,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:02,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207918901] [2024-11-13 12:44:02,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207918901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:02,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:02,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:44:02,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770359301] [2024-11-13 12:44:02,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:02,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:44:02,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:02,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:44:02,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:44:02,997 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2024-11-13 12:44:03,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:03,204 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2024-11-13 12:44:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:44:03,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2024-11-13 12:44:03,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:03,208 INFO L225 Difference]: With dead ends: 47 [2024-11-13 12:44:03,209 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 12:44:03,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:44:03,211 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 35 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:03,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 100 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:03,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 12:44:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2024-11-13 12:44:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.6875) internal successors, (54), 44 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-11-13 12:44:03,221 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 8 [2024-11-13 12:44:03,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:03,222 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-11-13 12:44:03,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2024-11-13 12:44:03,222 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-11-13 12:44:03,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 12:44:03,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:03,223 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:03,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 12:44:03,223 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:03,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:03,225 INFO L85 PathProgramCache]: Analyzing trace with hash 690578077, now seen corresponding path program 1 times [2024-11-13 12:44:03,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:03,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131524300] [2024-11-13 12:44:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:03,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:03,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131524300] [2024-11-13 12:44:03,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131524300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:03,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:44:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989436707] [2024-11-13 12:44:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:03,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:44:03,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:03,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:44:03,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:44:03,502 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2024-11-13 12:44:03,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:03,604 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2024-11-13 12:44:03,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:44:03,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2024-11-13 12:44:03,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:03,605 INFO L225 Difference]: With dead ends: 53 [2024-11-13 12:44:03,605 INFO L226 Difference]: Without dead ends: 53 [2024-11-13 12:44:03,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:44:03,606 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 32 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:03,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 97 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:03,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-13 12:44:03,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2024-11-13 12:44:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.625) internal successors, (52), 42 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2024-11-13 12:44:03,614 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 10 [2024-11-13 12:44:03,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:03,614 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2024-11-13 12:44:03,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2024-11-13 12:44:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2024-11-13 12:44:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 12:44:03,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:03,615 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:03,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 12:44:03,616 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:03,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:03,616 INFO L85 PathProgramCache]: Analyzing trace with hash 690578078, now seen corresponding path program 1 times [2024-11-13 12:44:03,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:03,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431320919] [2024-11-13 12:44:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:03,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:03,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431320919] [2024-11-13 12:44:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431320919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:03,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:44:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122281150] [2024-11-13 12:44:03,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:03,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:44:03,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:03,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:44:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:44:03,888 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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) [2024-11-13 12:44:04,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:04,030 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-11-13 12:44:04,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:44:04,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2024-11-13 12:44:04,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:04,031 INFO L225 Difference]: With dead ends: 54 [2024-11-13 12:44:04,031 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 12:44:04,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:44:04,032 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:04,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 119 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 12:44:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2024-11-13 12:44:04,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 48 states have internal predecessors, (59), 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) [2024-11-13 12:44:04,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2024-11-13 12:44:04,036 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 10 [2024-11-13 12:44:04,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:04,036 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2024-11-13 12:44:04,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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) [2024-11-13 12:44:04,037 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-11-13 12:44:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 12:44:04,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:04,038 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:04,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 12:44:04,038 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:04,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:04,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1829381856, now seen corresponding path program 1 times [2024-11-13 12:44:04,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:04,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909353163] [2024-11-13 12:44:04,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:04,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:04,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:04,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909353163] [2024-11-13 12:44:04,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909353163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:04,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:04,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 12:44:04,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969414534] [2024-11-13 12:44:04,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:04,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 12:44:04,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:04,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 12:44:04,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:44:04,250 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2024-11-13 12:44:04,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:04,316 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2024-11-13 12:44:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:44:04,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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 10 [2024-11-13 12:44:04,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:04,318 INFO L225 Difference]: With dead ends: 52 [2024-11-13 12:44:04,318 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 12:44:04,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:44:04,319 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:04,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 104 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 12:44:04,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2024-11-13 12:44:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 34 states have (on average 1.588235294117647) internal successors, (54), 44 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-11-13 12:44:04,323 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 10 [2024-11-13 12:44:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:04,324 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-11-13 12:44:04,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2024-11-13 12:44:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-11-13 12:44:04,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 12:44:04,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:04,325 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:04,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 12:44:04,325 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:04,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:04,325 INFO L85 PathProgramCache]: Analyzing trace with hash -194577898, now seen corresponding path program 1 times [2024-11-13 12:44:04,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:04,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876077663] [2024-11-13 12:44:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:04,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:04,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:04,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876077663] [2024-11-13 12:44:04,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876077663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:04,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198330617] [2024-11-13 12:44:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:04,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:04,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:04,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:04,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 12:44:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:04,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 12:44:04,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:05,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 12:44:05,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-13 12:44:05,022 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 10 treesize of output 8 [2024-11-13 12:44:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:05,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:05,660 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 12:44:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:05,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198330617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:05,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:05,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-13 12:44:05,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859308105] [2024-11-13 12:44:05,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:05,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 12:44:05,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:05,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 12:44:05,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2024-11-13 12:44:05,742 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 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) [2024-11-13 12:44:06,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:06,256 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2024-11-13 12:44:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 12:44:06,257 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 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 11 [2024-11-13 12:44:06,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:06,258 INFO L225 Difference]: With dead ends: 47 [2024-11-13 12:44:06,258 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 12:44:06,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2024-11-13 12:44:06,259 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 47 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:06,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 239 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 12:44:06,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 12:44:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2024-11-13 12:44:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.5625) internal successors, (50), 41 states have internal predecessors, (50), 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) [2024-11-13 12:44:06,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-13 12:44:06,263 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 11 [2024-11-13 12:44:06,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:06,263 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-13 12:44:06,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 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) [2024-11-13 12:44:06,264 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-13 12:44:06,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 12:44:06,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:06,264 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:06,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 12:44:06,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 12:44:06,466 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:06,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:06,466 INFO L85 PathProgramCache]: Analyzing trace with hash 118166780, now seen corresponding path program 1 times [2024-11-13 12:44:06,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:06,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426411372] [2024-11-13 12:44:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:06,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:06,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426411372] [2024-11-13 12:44:06,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426411372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:06,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979652432] [2024-11-13 12:44:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:06,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:06,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:06,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:06,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 12:44:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:06,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 12:44:06,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:06,665 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:44:06,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979652432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:06,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:44:06,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 12:44:06,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651732593] [2024-11-13 12:44:06,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:06,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:44:06,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:06,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:44:06,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:44:06,668 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2024-11-13 12:44:06,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:06,710 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2024-11-13 12:44:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:44:06,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 [2024-11-13 12:44:06,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:06,712 INFO L225 Difference]: With dead ends: 50 [2024-11-13 12:44:06,712 INFO L226 Difference]: Without dead ends: 50 [2024-11-13 12:44:06,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:44:06,713 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:06,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 135 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:44:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-13 12:44:06,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-13 12:44:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.475) internal successors, (59), 49 states have internal predecessors, (59), 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) [2024-11-13 12:44:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2024-11-13 12:44:06,721 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 13 [2024-11-13 12:44:06,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:06,721 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2024-11-13 12:44:06,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2024-11-13 12:44:06,721 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2024-11-13 12:44:06,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 12:44:06,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:06,725 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:06,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 12:44:06,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:06,926 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:06,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:06,926 INFO L85 PathProgramCache]: Analyzing trace with hash -274860230, now seen corresponding path program 1 times [2024-11-13 12:44:06,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:06,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201813902] [2024-11-13 12:44:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:06,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:07,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:07,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201813902] [2024-11-13 12:44:07,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201813902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:07,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146220763] [2024-11-13 12:44:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:07,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:07,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:07,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:07,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 12:44:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:07,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 12:44:07,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:07,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-13 12:44:07,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 12:44:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:07,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:08,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146220763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:08,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:08,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-13 12:44:08,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31502598] [2024-11-13 12:44:08,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:08,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 12:44:08,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:08,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 12:44:08,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2024-11-13 12:44:08,042 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:08,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:08,314 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-11-13 12:44:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 12:44:08,315 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 12:44:08,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:08,316 INFO L225 Difference]: With dead ends: 51 [2024-11-13 12:44:08,316 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 12:44:08,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2024-11-13 12:44:08,317 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 24 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:08,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 159 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:08,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 12:44:08,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2024-11-13 12:44:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 47 states have internal predecessors, (57), 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) [2024-11-13 12:44:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2024-11-13 12:44:08,321 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 13 [2024-11-13 12:44:08,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:08,322 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2024-11-13 12:44:08,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2024-11-13 12:44:08,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 12:44:08,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:08,323 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:08,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 12:44:08,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 12:44:08,527 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:08,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:08,527 INFO L85 PathProgramCache]: Analyzing trace with hash -631798823, now seen corresponding path program 1 times [2024-11-13 12:44:08,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:08,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291715561] [2024-11-13 12:44:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:08,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:08,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:08,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291715561] [2024-11-13 12:44:08,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291715561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:08,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:08,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:44:08,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654614029] [2024-11-13 12:44:08,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:08,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:44:08,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:08,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:44:08,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:08,697 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-13 12:44:08,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:08,722 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2024-11-13 12:44:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:44:08,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2024-11-13 12:44:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:08,723 INFO L225 Difference]: With dead ends: 63 [2024-11-13 12:44:08,723 INFO L226 Difference]: Without dead ends: 63 [2024-11-13 12:44:08,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:08,724 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:08,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:44:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-13 12:44:08,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-13 12:44:08,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 62 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) [2024-11-13 12:44:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2024-11-13 12:44:08,732 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 14 [2024-11-13 12:44:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:08,732 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2024-11-13 12:44:08,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-13 12:44:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2024-11-13 12:44:08,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 12:44:08,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:08,733 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:08,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 12:44:08,733 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:08,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:08,733 INFO L85 PathProgramCache]: Analyzing trace with hash -373633385, now seen corresponding path program 1 times [2024-11-13 12:44:08,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:08,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688726190] [2024-11-13 12:44:08,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:08,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:08,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:08,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688726190] [2024-11-13 12:44:08,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688726190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:08,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:08,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:44:08,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268893326] [2024-11-13 12:44:08,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:08,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:44:08,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:08,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:44:08,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:44:08,933 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-11-13 12:44:08,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:08,978 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2024-11-13 12:44:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:44:08,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2024-11-13 12:44:08,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:08,979 INFO L225 Difference]: With dead ends: 62 [2024-11-13 12:44:08,979 INFO L226 Difference]: Without dead ends: 62 [2024-11-13 12:44:08,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:44:08,980 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:08,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 69 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:44:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-13 12:44:08,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 47. [2024-11-13 12:44:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.435897435897436) internal successors, (56), 46 states have internal predecessors, (56), 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) [2024-11-13 12:44:08,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2024-11-13 12:44:08,984 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 14 [2024-11-13 12:44:08,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:08,985 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2024-11-13 12:44:08,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-11-13 12:44:08,985 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2024-11-13 12:44:08,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 12:44:08,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:08,985 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:08,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 12:44:08,986 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:08,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:08,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1889072968, now seen corresponding path program 1 times [2024-11-13 12:44:08,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:08,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023910501] [2024-11-13 12:44:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:08,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:09,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:09,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023910501] [2024-11-13 12:44:09,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023910501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:09,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382344197] [2024-11-13 12:44:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:09,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:09,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:09,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:09,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 12:44:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:09,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 12:44:09,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:09,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:09,474 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 22 treesize of output 18 [2024-11-13 12:44:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:09,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382344197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:09,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:09,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-13 12:44:09,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991213863] [2024-11-13 12:44:09,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:09,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 12:44:09,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:09,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 12:44:09,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-13 12:44:09,555 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:09,746 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2024-11-13 12:44:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 12:44:09,747 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-13 12:44:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:09,747 INFO L225 Difference]: With dead ends: 70 [2024-11-13 12:44:09,747 INFO L226 Difference]: Without dead ends: 70 [2024-11-13 12:44:09,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2024-11-13 12:44:09,748 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 24 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:09,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 194 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:09,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-13 12:44:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2024-11-13 12:44:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 67 states have internal predecessors, (79), 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) [2024-11-13 12:44:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2024-11-13 12:44:09,751 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 15 [2024-11-13 12:44:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:09,752 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2024-11-13 12:44:09,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:09,752 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2024-11-13 12:44:09,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 12:44:09,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:09,752 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:09,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 12:44:09,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 12:44:09,953 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:09,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:09,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1704829750, now seen corresponding path program 1 times [2024-11-13 12:44:09,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:09,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723735952] [2024-11-13 12:44:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:09,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:10,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:10,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723735952] [2024-11-13 12:44:10,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723735952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:10,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570199949] [2024-11-13 12:44:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:10,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:10,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:10,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:10,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 12:44:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:10,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 12:44:10,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:10,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:10,605 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 22 treesize of output 18 [2024-11-13 12:44:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:10,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570199949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:10,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:10,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-13 12:44:10,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663176886] [2024-11-13 12:44:10,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:10,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 12:44:10,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 12:44:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-13 12:44:10,760 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 18 states have internal predecessors, (38), 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) [2024-11-13 12:44:11,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:11,188 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2024-11-13 12:44:11,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 12:44:11,188 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 18 states have internal predecessors, (38), 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 15 [2024-11-13 12:44:11,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:11,189 INFO L225 Difference]: With dead ends: 73 [2024-11-13 12:44:11,189 INFO L226 Difference]: Without dead ends: 73 [2024-11-13 12:44:11,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2024-11-13 12:44:11,191 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 80 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:11,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 265 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 12:44:11,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-13 12:44:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2024-11-13 12:44:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 60 states have internal predecessors, (72), 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) [2024-11-13 12:44:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2024-11-13 12:44:11,194 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 15 [2024-11-13 12:44:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:11,195 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2024-11-13 12:44:11,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 18 states have internal predecessors, (38), 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) [2024-11-13 12:44:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2024-11-13 12:44:11,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 12:44:11,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:11,195 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:11,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 12:44:11,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 12:44:11,399 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:11,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:11,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1446664312, now seen corresponding path program 1 times [2024-11-13 12:44:11,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:11,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418350443] [2024-11-13 12:44:11,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:11,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:11,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:11,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418350443] [2024-11-13 12:44:11,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418350443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:11,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786808525] [2024-11-13 12:44:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:11,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:11,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:11,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:11,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 12:44:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:11,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 12:44:11,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:11,816 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:44:11,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786808525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:11,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:44:11,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2024-11-13 12:44:11,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164362856] [2024-11-13 12:44:11,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:11,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 12:44:11,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 12:44:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-13 12:44:11,817 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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) [2024-11-13 12:44:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:11,985 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2024-11-13 12:44:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 12:44:11,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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 15 [2024-11-13 12:44:11,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:11,987 INFO L225 Difference]: With dead ends: 62 [2024-11-13 12:44:11,987 INFO L226 Difference]: Without dead ends: 62 [2024-11-13 12:44:11,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-13 12:44:11,987 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:11,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 124 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-13 12:44:11,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2024-11-13 12:44:11,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 45 states have internal predecessors, (55), 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) [2024-11-13 12:44:11,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2024-11-13 12:44:11,990 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 15 [2024-11-13 12:44:11,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:11,990 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2024-11-13 12:44:11,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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) [2024-11-13 12:44:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2024-11-13 12:44:11,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 12:44:11,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:11,991 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:12,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 12:44:12,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 12:44:12,192 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:12,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:12,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1372043829, now seen corresponding path program 1 times [2024-11-13 12:44:12,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:12,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290162494] [2024-11-13 12:44:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:12,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:12,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:12,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290162494] [2024-11-13 12:44:12,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290162494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:12,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:12,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:44:12,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396266432] [2024-11-13 12:44:12,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:12,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:44:12,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:12,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:44:12,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:12,246 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) [2024-11-13 12:44:12,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:12,291 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2024-11-13 12:44:12,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:44:12,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 [2024-11-13 12:44:12,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:12,292 INFO L225 Difference]: With dead ends: 45 [2024-11-13 12:44:12,292 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 12:44:12,292 INFO L431 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 [2024-11-13 12:44:12,293 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:12,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 50 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:44:12,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 12:44:12,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-13 12:44:12,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 44 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:12,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-11-13 12:44:12,295 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 17 [2024-11-13 12:44:12,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:12,295 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-11-13 12:44:12,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) [2024-11-13 12:44:12,296 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-11-13 12:44:12,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 12:44:12,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:12,296 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:12,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 12:44:12,296 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:12,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:12,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1372043828, now seen corresponding path program 1 times [2024-11-13 12:44:12,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:12,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243962378] [2024-11-13 12:44:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:12,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:12,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:12,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243962378] [2024-11-13 12:44:12,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243962378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:12,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468895545] [2024-11-13 12:44:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:12,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:12,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:12,559 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:12,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 12:44:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:12,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 12:44:12,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:12,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-13 12:44:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:12,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:12,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468895545] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:12,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 12:44:12,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2024-11-13 12:44:12,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021901958] [2024-11-13 12:44:12,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:12,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:44:12,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:12,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:44:12,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-13 12:44:12,867 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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) [2024-11-13 12:44:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:12,958 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2024-11-13 12:44:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:44:12,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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 [2024-11-13 12:44:12,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:12,959 INFO L225 Difference]: With dead ends: 48 [2024-11-13 12:44:12,959 INFO L226 Difference]: Without dead ends: 48 [2024-11-13 12:44:12,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-11-13 12:44:12,960 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:12,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 89 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:12,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-13 12:44:12,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2024-11-13 12:44:12,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.375) internal successors, (55), 45 states have internal predecessors, (55), 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) [2024-11-13 12:44:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2024-11-13 12:44:12,966 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 17 [2024-11-13 12:44:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:12,966 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2024-11-13 12:44:12,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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) [2024-11-13 12:44:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2024-11-13 12:44:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 12:44:12,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:12,967 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:12,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 12:44:13,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:13,168 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:13,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash 20841637, now seen corresponding path program 1 times [2024-11-13 12:44:13,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:13,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121925435] [2024-11-13 12:44:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:13,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:13,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:13,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121925435] [2024-11-13 12:44:13,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121925435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:13,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314096235] [2024-11-13 12:44:13,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:13,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:13,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:13,600 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:13,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 12:44:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:13,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 12:44:13,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:13,717 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 11 treesize of output 7 [2024-11-13 12:44:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:13,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:44:13,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314096235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:13,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:44:13,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-13 12:44:13,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799462065] [2024-11-13 12:44:13,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:13,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:44:13,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:44:13,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-13 12:44:13,764 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-13 12:44:13,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:13,818 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2024-11-13 12:44:13,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:44:13,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2024-11-13 12:44:13,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:13,819 INFO L225 Difference]: With dead ends: 71 [2024-11-13 12:44:13,819 INFO L226 Difference]: Without dead ends: 71 [2024-11-13 12:44:13,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 12:44:13,820 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:13,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 148 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:44:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-13 12:44:13,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-11-13 12:44:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 64 states have (on average 1.265625) internal successors, (81), 69 states have internal predecessors, (81), 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) [2024-11-13 12:44:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2024-11-13 12:44:13,823 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 19 [2024-11-13 12:44:13,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:13,823 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2024-11-13 12:44:13,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-13 12:44:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2024-11-13 12:44:13,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 12:44:13,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:13,824 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:13,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 12:44:14,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:14,025 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:14,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1259022041, now seen corresponding path program 1 times [2024-11-13 12:44:14,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:14,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581698019] [2024-11-13 12:44:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:14,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:14,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:14,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581698019] [2024-11-13 12:44:14,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581698019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:14,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314151247] [2024-11-13 12:44:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:14,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:14,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:14,402 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:14,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 12:44:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:14,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 12:44:14,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:14,586 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 11 treesize of output 7 [2024-11-13 12:44:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:14,649 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:44:14,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314151247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:14,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:44:14,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 15 [2024-11-13 12:44:14,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196039686] [2024-11-13 12:44:14,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:14,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 12:44:14,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:14,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 12:44:14,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-13 12:44:14,651 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2024-11-13 12:44:14,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:14,772 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2024-11-13 12:44:14,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 12:44:14,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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 19 [2024-11-13 12:44:14,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:14,773 INFO L225 Difference]: With dead ends: 77 [2024-11-13 12:44:14,773 INFO L226 Difference]: Without dead ends: 77 [2024-11-13 12:44:14,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-13 12:44:14,774 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 47 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:14,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 161 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-13 12:44:14,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2024-11-13 12:44:14,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.2982456140350878) internal successors, (74), 62 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) [2024-11-13 12:44:14,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2024-11-13 12:44:14,778 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 19 [2024-11-13 12:44:14,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:14,778 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2024-11-13 12:44:14,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2024-11-13 12:44:14,779 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2024-11-13 12:44:14,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 12:44:14,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:14,780 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:14,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 12:44:14,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 12:44:14,985 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:14,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:14,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2014876901, now seen corresponding path program 1 times [2024-11-13 12:44:14,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:14,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566432402] [2024-11-13 12:44:14,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:14,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:15,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:15,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566432402] [2024-11-13 12:44:15,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566432402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:15,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235502765] [2024-11-13 12:44:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:15,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:15,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:15,449 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:15,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 12:44:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:15,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 12:44:15,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:15,713 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 11 treesize of output 7 [2024-11-13 12:44:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:15,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:15,798 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 13 treesize of output 11 [2024-11-13 12:44:15,802 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 14 treesize of output 12 [2024-11-13 12:44:15,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:15,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235502765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:15,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:15,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2024-11-13 12:44:15,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568745092] [2024-11-13 12:44:15,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:15,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 12:44:15,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:15,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 12:44:15,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-13 12:44:15,967 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 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) [2024-11-13 12:44:16,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:16,716 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2024-11-13 12:44:16,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 12:44:16,719 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 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 19 [2024-11-13 12:44:16,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:16,720 INFO L225 Difference]: With dead ends: 101 [2024-11-13 12:44:16,720 INFO L226 Difference]: Without dead ends: 101 [2024-11-13 12:44:16,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 12:44:16,723 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 215 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:16,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 205 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 12:44:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-13 12:44:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 68. [2024-11-13 12:44:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 67 states have internal predecessors, (81), 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) [2024-11-13 12:44:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2024-11-13 12:44:16,727 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 19 [2024-11-13 12:44:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:16,728 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2024-11-13 12:44:16,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 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) [2024-11-13 12:44:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2024-11-13 12:44:16,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 12:44:16,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:16,730 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:16,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 12:44:16,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 12:44:16,934 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:16,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:16,935 INFO L85 PathProgramCache]: Analyzing trace with hash 646089249, now seen corresponding path program 1 times [2024-11-13 12:44:16,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:16,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926766213] [2024-11-13 12:44:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:16,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926766213] [2024-11-13 12:44:16,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926766213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:16,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:16,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:44:16,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850768191] [2024-11-13 12:44:16,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:16,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:44:16,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:16,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:44:16,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:44:16,999 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:17,055 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-11-13 12:44:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:44:17,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 12:44:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:17,056 INFO L225 Difference]: With dead ends: 67 [2024-11-13 12:44:17,057 INFO L226 Difference]: Without dead ends: 67 [2024-11-13 12:44:17,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:44:17,057 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 20 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:17,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 71 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:44:17,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-13 12:44:17,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-13 12:44:17,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 66 states have internal predecessors, (80), 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) [2024-11-13 12:44:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2024-11-13 12:44:17,060 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 20 [2024-11-13 12:44:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:17,060 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2024-11-13 12:44:17,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2024-11-13 12:44:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 12:44:17,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:17,061 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:17,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-13 12:44:17,061 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:17,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:17,062 INFO L85 PathProgramCache]: Analyzing trace with hash 646089250, now seen corresponding path program 1 times [2024-11-13 12:44:17,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:17,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455729101] [2024-11-13 12:44:17,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:17,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:17,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:17,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455729101] [2024-11-13 12:44:17,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455729101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:17,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:17,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 12:44:17,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133763846] [2024-11-13 12:44:17,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:17,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 12:44:17,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:17,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 12:44:17,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:44:17,222 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:17,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:17,317 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2024-11-13 12:44:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 12:44:17,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 12:44:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:17,318 INFO L225 Difference]: With dead ends: 90 [2024-11-13 12:44:17,318 INFO L226 Difference]: Without dead ends: 90 [2024-11-13 12:44:17,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:44:17,319 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 19 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:17,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 115 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:17,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-13 12:44:17,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 69. [2024-11-13 12:44:17,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.28125) internal successors, (82), 68 states have internal predecessors, (82), 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) [2024-11-13 12:44:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2024-11-13 12:44:17,324 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 20 [2024-11-13 12:44:17,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:17,324 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2024-11-13 12:44:17,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:17,325 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2024-11-13 12:44:17,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 12:44:17,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:17,325 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:17,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 12:44:17,325 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:17,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1446069706, now seen corresponding path program 1 times [2024-11-13 12:44:17,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:17,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362537460] [2024-11-13 12:44:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:17,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:17,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362537460] [2024-11-13 12:44:17,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362537460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:17,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:17,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:44:17,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886675234] [2024-11-13 12:44:17,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:17,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:44:17,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:17,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:44:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:44:17,395 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2024-11-13 12:44:17,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:17,459 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2024-11-13 12:44:17,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:44:17,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2024-11-13 12:44:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:17,460 INFO L225 Difference]: With dead ends: 68 [2024-11-13 12:44:17,460 INFO L226 Difference]: Without dead ends: 68 [2024-11-13 12:44:17,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:44:17,461 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:17,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 64 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-13 12:44:17,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-13 12:44:17,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.265625) internal successors, (81), 67 states have internal predecessors, (81), 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) [2024-11-13 12:44:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2024-11-13 12:44:17,467 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 21 [2024-11-13 12:44:17,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:17,467 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2024-11-13 12:44:17,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2024-11-13 12:44:17,467 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2024-11-13 12:44:17,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 12:44:17,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:17,468 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:17,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 12:44:17,468 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:17,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:17,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1446069705, now seen corresponding path program 1 times [2024-11-13 12:44:17,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:17,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414281253] [2024-11-13 12:44:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:17,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:17,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:17,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414281253] [2024-11-13 12:44:17,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414281253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:17,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370823032] [2024-11-13 12:44:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:17,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:17,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:17,670 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:17,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 12:44:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:17,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 12:44:17,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:17,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:17,972 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 7 treesize of output 5 [2024-11-13 12:44:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:17,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370823032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:17,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:17,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-13 12:44:17,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659068015] [2024-11-13 12:44:17,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:17,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 12:44:17,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:17,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 12:44:17,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-13 12:44:17,987 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 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) [2024-11-13 12:44:18,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:18,124 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2024-11-13 12:44:18,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 12:44:18,125 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 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) Word has length 21 [2024-11-13 12:44:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:18,125 INFO L225 Difference]: With dead ends: 72 [2024-11-13 12:44:18,125 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 12:44:18,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-13 12:44:18,126 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:18,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 150 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 12:44:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2024-11-13 12:44:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 68 states have internal predecessors, (82), 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) [2024-11-13 12:44:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2024-11-13 12:44:18,129 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 21 [2024-11-13 12:44:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:18,130 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2024-11-13 12:44:18,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 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) [2024-11-13 12:44:18,130 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2024-11-13 12:44:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 12:44:18,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:18,130 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:18,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 12:44:18,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 12:44:18,335 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:18,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1340571350, now seen corresponding path program 1 times [2024-11-13 12:44:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:18,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839367678] [2024-11-13 12:44:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:18,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:18,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:18,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839367678] [2024-11-13 12:44:18,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839367678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:18,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:18,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 12:44:18,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745853303] [2024-11-13 12:44:18,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:18,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 12:44:18,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:18,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 12:44:18,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:44:18,562 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:18,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:18,620 INFO L93 Difference]: Finished difference Result 110 states and 129 transitions. [2024-11-13 12:44:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 12:44:18,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-13 12:44:18,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:18,621 INFO L225 Difference]: With dead ends: 110 [2024-11-13 12:44:18,621 INFO L226 Difference]: Without dead ends: 110 [2024-11-13 12:44:18,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:44:18,622 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:18,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 158 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-13 12:44:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2024-11-13 12:44:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.2285714285714286) internal successors, (129), 108 states have internal predecessors, (129), 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) [2024-11-13 12:44:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 129 transitions. [2024-11-13 12:44:18,627 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 129 transitions. Word has length 24 [2024-11-13 12:44:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:18,627 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 129 transitions. [2024-11-13 12:44:18,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 129 transitions. [2024-11-13 12:44:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 12:44:18,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:18,628 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:18,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-13 12:44:18,628 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:18,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:18,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1174065120, now seen corresponding path program 2 times [2024-11-13 12:44:18,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:18,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816688827] [2024-11-13 12:44:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:18,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:19,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816688827] [2024-11-13 12:44:19,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816688827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357572372] [2024-11-13 12:44:19,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:44:19,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:19,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:19,205 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:19,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 12:44:19,310 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:44:19,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:19,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 12:44:19,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:19,577 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 [2024-11-13 12:44:19,925 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2024-11-13 12:44:19,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2024-11-13 12:44:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:19,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:20,166 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 29 treesize of output 25 [2024-11-13 12:44:20,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:44:20,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2024-11-13 12:44:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:20,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357572372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:20,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:20,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 33 [2024-11-13 12:44:20,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954718321] [2024-11-13 12:44:20,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:20,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 12:44:20,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 12:44:20,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 12:44:20,665 INFO L87 Difference]: Start difference. First operand 109 states and 129 transitions. Second operand has 33 states, 33 states have (on average 1.878787878787879) internal successors, (62), 33 states have internal predecessors, (62), 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) [2024-11-13 12:44:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:23,821 INFO L93 Difference]: Finished difference Result 217 states and 251 transitions. [2024-11-13 12:44:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 12:44:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.878787878787879) internal successors, (62), 33 states have internal predecessors, (62), 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 24 [2024-11-13 12:44:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:23,823 INFO L225 Difference]: With dead ends: 217 [2024-11-13 12:44:23,823 INFO L226 Difference]: Without dead ends: 217 [2024-11-13 12:44:23,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=545, Invalid=3237, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 12:44:23,826 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 166 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:23,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 498 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 12:44:23,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-13 12:44:23,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 131. [2024-11-13 12:44:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 1.236220472440945) internal successors, (157), 130 states have internal predecessors, (157), 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) [2024-11-13 12:44:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2024-11-13 12:44:23,832 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 24 [2024-11-13 12:44:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:23,832 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2024-11-13 12:44:23,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.878787878787879) internal successors, (62), 33 states have internal predecessors, (62), 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) [2024-11-13 12:44:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2024-11-13 12:44:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 12:44:23,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:23,833 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:23,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 12:44:24,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 12:44:24,041 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:24,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1121716632, now seen corresponding path program 1 times [2024-11-13 12:44:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:24,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790812504] [2024-11-13 12:44:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:24,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:24,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790812504] [2024-11-13 12:44:24,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790812504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:24,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:24,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 12:44:24,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111886400] [2024-11-13 12:44:24,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:24,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 12:44:24,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:24,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 12:44:24,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-13 12:44:24,275 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:24,427 INFO L93 Difference]: Finished difference Result 151 states and 177 transitions. [2024-11-13 12:44:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 12:44:24,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-13 12:44:24,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:24,428 INFO L225 Difference]: With dead ends: 151 [2024-11-13 12:44:24,429 INFO L226 Difference]: Without dead ends: 151 [2024-11-13 12:44:24,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-13 12:44:24,429 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:24,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 164 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:24,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-13 12:44:24,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 123. [2024-11-13 12:44:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 119 states have (on average 1.2436974789915967) internal successors, (148), 122 states have internal predecessors, (148), 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) [2024-11-13 12:44:24,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2024-11-13 12:44:24,437 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 24 [2024-11-13 12:44:24,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:24,437 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2024-11-13 12:44:24,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:24,437 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2024-11-13 12:44:24,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 12:44:24,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:24,438 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:24,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-13 12:44:24,438 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:24,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:24,438 INFO L85 PathProgramCache]: Analyzing trace with hash -699014806, now seen corresponding path program 1 times [2024-11-13 12:44:24,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:24,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379105572] [2024-11-13 12:44:24,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:24,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:24,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:24,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379105572] [2024-11-13 12:44:24,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379105572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:24,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:24,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 12:44:24,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081756393] [2024-11-13 12:44:24,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:24,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 12:44:24,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:24,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 12:44:24,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 12:44:24,662 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:24,743 INFO L93 Difference]: Finished difference Result 173 states and 208 transitions. [2024-11-13 12:44:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 12:44:24,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-13 12:44:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:24,744 INFO L225 Difference]: With dead ends: 173 [2024-11-13 12:44:24,744 INFO L226 Difference]: Without dead ends: 173 [2024-11-13 12:44:24,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 12:44:24,745 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:24,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 161 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-13 12:44:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 125. [2024-11-13 12:44:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 121 states have (on average 1.256198347107438) internal successors, (152), 124 states have internal predecessors, (152), 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) [2024-11-13 12:44:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 152 transitions. [2024-11-13 12:44:24,750 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 152 transitions. Word has length 24 [2024-11-13 12:44:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:24,750 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 152 transitions. [2024-11-13 12:44:24,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 152 transitions. [2024-11-13 12:44:24,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 12:44:24,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:24,751 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:24,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-13 12:44:24,752 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:24,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:24,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1391916477, now seen corresponding path program 1 times [2024-11-13 12:44:24,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:24,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545573198] [2024-11-13 12:44:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:24,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:24,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:24,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545573198] [2024-11-13 12:44:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545573198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:24,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:24,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:44:24,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467443954] [2024-11-13 12:44:24,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:24,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:44:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:24,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:44:24,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:24,909 INFO L87 Difference]: Start difference. First operand 125 states and 152 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-11-13 12:44:24,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:24,935 INFO L93 Difference]: Finished difference Result 124 states and 151 transitions. [2024-11-13 12:44:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:44:24,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2024-11-13 12:44:24,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:24,937 INFO L225 Difference]: With dead ends: 124 [2024-11-13 12:44:24,937 INFO L226 Difference]: Without dead ends: 90 [2024-11-13 12:44:24,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:24,938 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:24,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 50 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:44:24,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-13 12:44:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-13 12:44:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 87 states have (on average 1.206896551724138) internal successors, (105), 89 states have internal predecessors, (105), 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) [2024-11-13 12:44:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2024-11-13 12:44:24,941 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 25 [2024-11-13 12:44:24,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:24,941 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2024-11-13 12:44:24,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-11-13 12:44:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2024-11-13 12:44:24,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 12:44:24,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:24,942 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:24,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-13 12:44:24,942 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:24,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:24,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2146584628, now seen corresponding path program 1 times [2024-11-13 12:44:24,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:24,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309462526] [2024-11-13 12:44:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:24,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:25,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:25,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309462526] [2024-11-13 12:44:25,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309462526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:25,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757411812] [2024-11-13 12:44:25,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:25,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:25,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:25,054 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:25,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 12:44:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:25,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 12:44:25,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:25,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:25,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757411812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:25,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:25,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-13 12:44:25,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991254317] [2024-11-13 12:44:25,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:25,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 12:44:25,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:25,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 12:44:25,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-13 12:44:25,320 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 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) [2024-11-13 12:44:25,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:25,514 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2024-11-13 12:44:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 12:44:25,514 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 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 27 [2024-11-13 12:44:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:25,515 INFO L225 Difference]: With dead ends: 99 [2024-11-13 12:44:25,515 INFO L226 Difference]: Without dead ends: 99 [2024-11-13 12:44:25,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2024-11-13 12:44:25,516 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 35 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:25,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 88 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-13 12:44:25,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2024-11-13 12:44:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 92 states have internal predecessors, (107), 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) [2024-11-13 12:44:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2024-11-13 12:44:25,521 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 27 [2024-11-13 12:44:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:25,521 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2024-11-13 12:44:25,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 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) [2024-11-13 12:44:25,521 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2024-11-13 12:44:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 12:44:25,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:25,522 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:25,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 12:44:25,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 12:44:25,723 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:25,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:25,723 INFO L85 PathProgramCache]: Analyzing trace with hash -741857129, now seen corresponding path program 3 times [2024-11-13 12:44:25,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:25,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596643660] [2024-11-13 12:44:25,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:25,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:26,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:26,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596643660] [2024-11-13 12:44:26,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596643660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:26,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095431875] [2024-11-13 12:44:26,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:44:26,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:26,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:26,797 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:26,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 12:44:26,917 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 12:44:26,917 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:26,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 12:44:26,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:27,296 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 [2024-11-13 12:44:27,806 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-13 12:44:27,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 26 [2024-11-13 12:44:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:27,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:28,209 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 44 treesize of output 38 [2024-11-13 12:44:28,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:44:28,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 34 [2024-11-13 12:44:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:28,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095431875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:28,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:28,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 43 [2024-11-13 12:44:28,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468074703] [2024-11-13 12:44:28,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:28,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 12:44:28,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:28,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 12:44:28,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1649, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 12:44:28,683 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand has 43 states, 43 states have (on average 1.7906976744186047) internal successors, (77), 43 states have internal predecessors, (77), 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) [2024-11-13 12:44:32,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:32,220 INFO L93 Difference]: Finished difference Result 180 states and 204 transitions. [2024-11-13 12:44:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 12:44:32,221 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.7906976744186047) internal successors, (77), 43 states have internal predecessors, (77), 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 29 [2024-11-13 12:44:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:32,221 INFO L225 Difference]: With dead ends: 180 [2024-11-13 12:44:32,221 INFO L226 Difference]: Without dead ends: 170 [2024-11-13 12:44:32,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=660, Invalid=4890, Unknown=0, NotChecked=0, Total=5550 [2024-11-13 12:44:32,223 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 245 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:32,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 358 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 12:44:32,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-13 12:44:32,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 109. [2024-11-13 12:44:32,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 108 states have internal predecessors, (126), 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) [2024-11-13 12:44:32,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 126 transitions. [2024-11-13 12:44:32,228 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 126 transitions. Word has length 29 [2024-11-13 12:44:32,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:32,229 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 126 transitions. [2024-11-13 12:44:32,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.7906976744186047) internal successors, (77), 43 states have internal predecessors, (77), 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) [2024-11-13 12:44:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 126 transitions. [2024-11-13 12:44:32,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 12:44:32,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:32,230 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:32,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 12:44:32,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 12:44:32,434 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:32,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash 124544294, now seen corresponding path program 2 times [2024-11-13 12:44:32,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:32,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40114116] [2024-11-13 12:44:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:32,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:32,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:44:32,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:32,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40114116] [2024-11-13 12:44:32,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40114116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:32,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802526426] [2024-11-13 12:44:32,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:44:32,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:32,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:32,687 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:32,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 12:44:32,809 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:44:32,809 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:32,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 12:44:32,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:44:32,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:33,136 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 [2024-11-13 12:44:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:44:33,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802526426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:33,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:33,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-13 12:44:33,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354215590] [2024-11-13 12:44:33,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:33,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 12:44:33,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:33,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 12:44:33,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-13 12:44:33,182 INFO L87 Difference]: Start difference. First operand 109 states and 126 transitions. Second operand has 20 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 20 states have internal predecessors, (56), 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) [2024-11-13 12:44:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:33,421 INFO L93 Difference]: Finished difference Result 117 states and 133 transitions. [2024-11-13 12:44:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 12:44:33,421 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 20 states have internal predecessors, (56), 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 30 [2024-11-13 12:44:33,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:33,422 INFO L225 Difference]: With dead ends: 117 [2024-11-13 12:44:33,422 INFO L226 Difference]: Without dead ends: 117 [2024-11-13 12:44:33,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-13 12:44:33,423 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:33,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 213 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 12:44:33,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-13 12:44:33,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 112. [2024-11-13 12:44:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.18348623853211) internal successors, (129), 111 states have internal predecessors, (129), 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) [2024-11-13 12:44:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2024-11-13 12:44:33,428 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 30 [2024-11-13 12:44:33,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:33,428 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2024-11-13 12:44:33,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 20 states have internal predecessors, (56), 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) [2024-11-13 12:44:33,428 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2024-11-13 12:44:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 12:44:33,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:33,429 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:33,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 12:44:33,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 12:44:33,633 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:33,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:33,634 INFO L85 PathProgramCache]: Analyzing trace with hash -434094157, now seen corresponding path program 1 times [2024-11-13 12:44:33,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:33,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087808945] [2024-11-13 12:44:33,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:33,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:33,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:33,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:33,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087808945] [2024-11-13 12:44:33,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087808945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:33,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507543085] [2024-11-13 12:44:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:33,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:33,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:33,983 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:33,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 12:44:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:34,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 12:44:34,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:34,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-13 12:44:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:34,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:34,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507543085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:34,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:34,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2024-11-13 12:44:34,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181177840] [2024-11-13 12:44:34,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:34,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 12:44:34,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:34,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 12:44:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-11-13 12:44:34,520 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand has 23 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 23 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) [2024-11-13 12:44:34,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:34,788 INFO L93 Difference]: Finished difference Result 129 states and 147 transitions. [2024-11-13 12:44:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 12:44:34,788 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 23 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 31 [2024-11-13 12:44:34,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:34,789 INFO L225 Difference]: With dead ends: 129 [2024-11-13 12:44:34,789 INFO L226 Difference]: Without dead ends: 129 [2024-11-13 12:44:34,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2024-11-13 12:44:34,790 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:34,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 166 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 12:44:34,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-13 12:44:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 123. [2024-11-13 12:44:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.175) internal successors, (141), 122 states have internal predecessors, (141), 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) [2024-11-13 12:44:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2024-11-13 12:44:34,798 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 31 [2024-11-13 12:44:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:34,798 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2024-11-13 12:44:34,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 23 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) [2024-11-13 12:44:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2024-11-13 12:44:34,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 12:44:34,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:34,799 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:34,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 12:44:34,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:35,000 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:35,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:35,001 INFO L85 PathProgramCache]: Analyzing trace with hash 124849550, now seen corresponding path program 1 times [2024-11-13 12:44:35,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:35,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384089208] [2024-11-13 12:44:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:35,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:35,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:35,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384089208] [2024-11-13 12:44:35,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384089208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:35,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760698437] [2024-11-13 12:44:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:35,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:35,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:35,510 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:35,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 12:44:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:35,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 12:44:35,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:35,845 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 11 treesize of output 7 [2024-11-13 12:44:35,886 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 7 treesize of output 3 [2024-11-13 12:44:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:44:35,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:35,922 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 13 treesize of output 11 [2024-11-13 12:44:35,924 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 14 treesize of output 12 [2024-11-13 12:44:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:44:36,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760698437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:36,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:36,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2024-11-13 12:44:36,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785332311] [2024-11-13 12:44:36,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:36,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 12:44:36,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:36,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 12:44:36,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-11-13 12:44:36,123 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 28 states have internal predecessors, (72), 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) [2024-11-13 12:44:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:37,524 INFO L93 Difference]: Finished difference Result 147 states and 165 transitions. [2024-11-13 12:44:37,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 12:44:37,526 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 28 states have internal predecessors, (72), 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 33 [2024-11-13 12:44:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:37,527 INFO L225 Difference]: With dead ends: 147 [2024-11-13 12:44:37,527 INFO L226 Difference]: Without dead ends: 147 [2024-11-13 12:44:37,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=610, Invalid=2812, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 12:44:37,528 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 88 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:37,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 252 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 12:44:37,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-13 12:44:37,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 127. [2024-11-13 12:44:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 124 states have (on average 1.1693548387096775) internal successors, (145), 126 states have internal predecessors, (145), 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) [2024-11-13 12:44:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2024-11-13 12:44:37,533 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 33 [2024-11-13 12:44:37,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:37,533 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2024-11-13 12:44:37,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 28 states have internal predecessors, (72), 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) [2024-11-13 12:44:37,533 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2024-11-13 12:44:37,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 12:44:37,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:37,534 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:37,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 12:44:37,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 12:44:37,735 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:37,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:37,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2099041134, now seen corresponding path program 4 times [2024-11-13 12:44:37,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:37,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516162170] [2024-11-13 12:44:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:37,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:38,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:38,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516162170] [2024-11-13 12:44:38,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516162170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:38,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17135337] [2024-11-13 12:44:38,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:44:38,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:38,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:38,370 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:38,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 12:44:38,496 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:44:38,496 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:38,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 12:44:38,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:38,564 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 [2024-11-13 12:44:39,340 INFO L349 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2024-11-13 12:44:39,340 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 [2024-11-13 12:44:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 12:44:39,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:40,251 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 [2024-11-13 12:44:40,263 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 [2024-11-13 12:44:40,273 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 [2024-11-13 12:44:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 12:44:40,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17135337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:40,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:40,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 35 [2024-11-13 12:44:40,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556194754] [2024-11-13 12:44:40,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:40,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 12:44:40,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:40,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 12:44:40,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 12:44:40,330 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 36 states have internal predecessors, (65), 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) [2024-11-13 12:44:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:42,196 INFO L93 Difference]: Finished difference Result 181 states and 201 transitions. [2024-11-13 12:44:42,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 12:44:42,197 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 36 states have internal predecessors, (65), 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 34 [2024-11-13 12:44:42,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:42,198 INFO L225 Difference]: With dead ends: 181 [2024-11-13 12:44:42,198 INFO L226 Difference]: Without dead ends: 148 [2024-11-13 12:44:42,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=438, Invalid=2754, Unknown=0, NotChecked=0, Total=3192 [2024-11-13 12:44:42,198 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 53 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:42,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 313 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 12:44:42,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-13 12:44:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 92. [2024-11-13 12:44:42,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.1666666666666667) internal successors, (105), 91 states have internal predecessors, (105), 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) [2024-11-13 12:44:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2024-11-13 12:44:42,202 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 34 [2024-11-13 12:44:42,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:42,203 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2024-11-13 12:44:42,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 36 states have internal predecessors, (65), 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) [2024-11-13 12:44:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2024-11-13 12:44:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 12:44:42,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:42,204 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:42,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 12:44:42,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 12:44:42,404 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:42,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:42,405 INFO L85 PathProgramCache]: Analyzing trace with hash 47528494, now seen corresponding path program 3 times [2024-11-13 12:44:42,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:42,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624743458] [2024-11-13 12:44:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:42,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:42,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:42,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624743458] [2024-11-13 12:44:42,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624743458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:42,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099441482] [2024-11-13 12:44:42,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:44:42,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:42,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:42,902 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:42,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 12:44:43,042 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 12:44:43,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:43,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 12:44:43,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:43,150 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 13 treesize of output 9 [2024-11-13 12:44:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:44:43,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:43,294 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 15 treesize of output 13 [2024-11-13 12:44:43,296 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 16 treesize of output 12 [2024-11-13 12:44:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:44:43,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099441482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:43,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:43,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 26 [2024-11-13 12:44:43,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007585318] [2024-11-13 12:44:43,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:43,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 12:44:43,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:43,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 12:44:43,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2024-11-13 12:44:43,390 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 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) [2024-11-13 12:44:43,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:43,874 INFO L93 Difference]: Finished difference Result 179 states and 202 transitions. [2024-11-13 12:44:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 12:44:43,874 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 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 34 [2024-11-13 12:44:43,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:43,875 INFO L225 Difference]: With dead ends: 179 [2024-11-13 12:44:43,875 INFO L226 Difference]: Without dead ends: 149 [2024-11-13 12:44:43,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 12:44:43,876 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 70 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:43,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 275 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 12:44:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-13 12:44:43,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 142. [2024-11-13 12:44:43,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 140 states have (on average 1.1285714285714286) internal successors, (158), 141 states have internal predecessors, (158), 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) [2024-11-13 12:44:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2024-11-13 12:44:43,880 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 34 [2024-11-13 12:44:43,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:43,881 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2024-11-13 12:44:43,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 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) [2024-11-13 12:44:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2024-11-13 12:44:43,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 12:44:43,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:43,882 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:43,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 12:44:44,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:44,086 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:44,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:44,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1106988355, now seen corresponding path program 2 times [2024-11-13 12:44:44,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:44,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140784489] [2024-11-13 12:44:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:44,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:44,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:44,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140784489] [2024-11-13 12:44:44,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140784489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:44,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470979395] [2024-11-13 12:44:44,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:44:44,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:44,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:44,642 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:44,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 12:44:44,788 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:44:44,788 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:44,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 12:44:44,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:45,107 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 [2024-11-13 12:44:45,395 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2024-11-13 12:44:45,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2024-11-13 12:44:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:44:45,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:45,606 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 29 treesize of output 25 [2024-11-13 12:44:45,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:44:45,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2024-11-13 12:44:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:44:46,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470979395] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:46,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:46,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 38 [2024-11-13 12:44:46,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107007054] [2024-11-13 12:44:46,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:46,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 12:44:46,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:46,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 12:44:46,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 12:44:46,048 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand has 38 states, 38 states have (on average 2.3947368421052633) internal successors, (91), 38 states have internal predecessors, (91), 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) [2024-11-13 12:44:48,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:48,148 INFO L93 Difference]: Finished difference Result 182 states and 199 transitions. [2024-11-13 12:44:48,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-13 12:44:48,149 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3947368421052633) internal successors, (91), 38 states have internal predecessors, (91), 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 38 [2024-11-13 12:44:48,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:48,150 INFO L225 Difference]: With dead ends: 182 [2024-11-13 12:44:48,150 INFO L226 Difference]: Without dead ends: 167 [2024-11-13 12:44:48,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=645, Invalid=4325, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 12:44:48,152 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 72 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:48,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 237 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 12:44:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-13 12:44:48,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 144. [2024-11-13 12:44:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 142 states have (on average 1.1267605633802817) internal successors, (160), 143 states have internal predecessors, (160), 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) [2024-11-13 12:44:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2024-11-13 12:44:48,156 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 38 [2024-11-13 12:44:48,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:48,156 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2024-11-13 12:44:48,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3947368421052633) internal successors, (91), 38 states have internal predecessors, (91), 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) [2024-11-13 12:44:48,157 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2024-11-13 12:44:48,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 12:44:48,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:48,157 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:48,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 12:44:48,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:48,358 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:48,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:48,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1152463758, now seen corresponding path program 4 times [2024-11-13 12:44:48,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:48,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775018076] [2024-11-13 12:44:48,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:48,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 12:44:48,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:48,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775018076] [2024-11-13 12:44:48,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775018076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:48,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703781139] [2024-11-13 12:44:48,658 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:44:48,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:48,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:48,660 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:48,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 12:44:48,810 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:44:48,810 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:48,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 12:44:48,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:48,868 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 [2024-11-13 12:44:49,366 INFO L349 Elim1Store]: treesize reduction 4, result has 81.8 percent of original size [2024-11-13 12:44:49,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2024-11-13 12:44:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 12:44:49,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:49,968 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 29 treesize of output 25 [2024-11-13 12:44:49,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2024-11-13 12:44:49,984 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 [2024-11-13 12:44:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 12:44:50,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703781139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:50,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:50,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 27 [2024-11-13 12:44:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186694270] [2024-11-13 12:44:50,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:50,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 12:44:50,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 12:44:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2024-11-13 12:44:50,033 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand has 28 states, 27 states have (on average 2.814814814814815) internal successors, (76), 28 states have internal predecessors, (76), 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) [2024-11-13 12:44:51,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:51,020 INFO L93 Difference]: Finished difference Result 149 states and 163 transitions. [2024-11-13 12:44:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 12:44:51,021 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.814814814814815) internal successors, (76), 28 states have internal predecessors, (76), 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 40 [2024-11-13 12:44:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:51,022 INFO L225 Difference]: With dead ends: 149 [2024-11-13 12:44:51,022 INFO L226 Difference]: Without dead ends: 149 [2024-11-13 12:44:51,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 12:44:51,023 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:51,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 317 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 12:44:51,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-13 12:44:51,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 125. [2024-11-13 12:44:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.1209677419354838) internal successors, (139), 124 states have internal predecessors, (139), 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) [2024-11-13 12:44:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 139 transitions. [2024-11-13 12:44:51,027 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 139 transitions. Word has length 40 [2024-11-13 12:44:51,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:51,027 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 139 transitions. [2024-11-13 12:44:51,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.814814814814815) internal successors, (76), 28 states have internal predecessors, (76), 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) [2024-11-13 12:44:51,027 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 139 transitions. [2024-11-13 12:44:51,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 12:44:51,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:51,028 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:51,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-13 12:44:51,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 12:44:51,232 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:51,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash -108793920, now seen corresponding path program 3 times [2024-11-13 12:44:51,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:51,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224888403] [2024-11-13 12:44:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:51,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:51,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:51,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224888403] [2024-11-13 12:44:51,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224888403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:51,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675152548] [2024-11-13 12:44:51,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:44:51,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:51,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:51,826 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:51,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 12:44:51,979 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 12:44:51,979 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:51,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-13 12:44:51,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:52,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-13 12:44:52,215 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 [2024-11-13 12:44:52,779 INFO L349 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2024-11-13 12:44:52,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 39 [2024-11-13 12:44:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 12:44:53,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:53,937 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 40 treesize of output 34 [2024-11-13 12:44:53,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:44:53,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 82 [2024-11-13 12:44:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 12:44:54,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675152548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:54,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:54,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 18] total 48 [2024-11-13 12:44:54,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919343781] [2024-11-13 12:44:54,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:54,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-13 12:44:54,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:54,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-13 12:44:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 12:44:54,737 INFO L87 Difference]: Start difference. First operand 125 states and 139 transitions. Second operand has 49 states, 48 states have (on average 2.2083333333333335) internal successors, (106), 49 states have internal predecessors, (106), 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) [2024-11-13 12:44:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:57,347 INFO L93 Difference]: Finished difference Result 173 states and 189 transitions. [2024-11-13 12:44:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 12:44:57,348 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.2083333333333335) internal successors, (106), 49 states have internal predecessors, (106), 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 43 [2024-11-13 12:44:57,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:57,349 INFO L225 Difference]: With dead ends: 173 [2024-11-13 12:44:57,349 INFO L226 Difference]: Without dead ends: 135 [2024-11-13 12:44:57,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1797 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=755, Invalid=6217, Unknown=0, NotChecked=0, Total=6972 [2024-11-13 12:44:57,351 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 51 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:57,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 197 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 12:44:57,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-13 12:44:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2024-11-13 12:44:57,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.125) internal successors, (117), 104 states have internal predecessors, (117), 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) [2024-11-13 12:44:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2024-11-13 12:44:57,355 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 43 [2024-11-13 12:44:57,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:57,355 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2024-11-13 12:44:57,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.2083333333333335) internal successors, (106), 49 states have internal predecessors, (106), 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) [2024-11-13 12:44:57,355 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2024-11-13 12:44:57,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 12:44:57,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:57,356 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:57,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 12:44:57,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:57,557 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:44:57,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:57,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1544367674, now seen corresponding path program 4 times [2024-11-13 12:44:57,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:57,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680565048] [2024-11-13 12:44:57,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:57,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:58,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:58,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680565048] [2024-11-13 12:44:58,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680565048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:58,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160032575] [2024-11-13 12:44:58,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:44:58,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:58,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:58,264 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:58,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 12:44:58,443 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:44:58,444 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:58,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 12:44:58,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:58,569 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 13 treesize of output 9 [2024-11-13 12:44:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 12:44:58,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:58,765 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 15 treesize of output 13 [2024-11-13 12:44:58,767 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 16 treesize of output 12 [2024-11-13 12:44:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 12:44:58,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160032575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:58,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:58,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 31 [2024-11-13 12:44:58,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450917976] [2024-11-13 12:44:58,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:58,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 12:44:58,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:58,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 12:44:58,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2024-11-13 12:44:58,866 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 31 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 31 states have internal predecessors, (85), 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) [2024-11-13 12:45:00,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:45:00,132 INFO L93 Difference]: Finished difference Result 255 states and 273 transitions. [2024-11-13 12:45:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 12:45:00,132 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 31 states have internal predecessors, (85), 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 47 [2024-11-13 12:45:00,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:45:00,133 INFO L225 Difference]: With dead ends: 255 [2024-11-13 12:45:00,133 INFO L226 Difference]: Without dead ends: 143 [2024-11-13 12:45:00,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=368, Invalid=3054, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 12:45:00,134 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 99 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:45:00,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 246 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 12:45:00,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-13 12:45:00,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 134. [2024-11-13 12:45:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0977443609022557) internal successors, (146), 133 states have internal predecessors, (146), 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) [2024-11-13 12:45:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2024-11-13 12:45:00,137 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 47 [2024-11-13 12:45:00,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:45:00,138 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2024-11-13 12:45:00,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 31 states have internal predecessors, (85), 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) [2024-11-13 12:45:00,138 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2024-11-13 12:45:00,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 12:45:00,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:45:00,138 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:45:00,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 12:45:00,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:00,339 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:45:00,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:45:00,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2037466706, now seen corresponding path program 5 times [2024-11-13 12:45:00,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:45:00,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455472117] [2024-11-13 12:45:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:45:00,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:45:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:45:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 8 proven. 29 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 12:45:01,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:45:01,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455472117] [2024-11-13 12:45:01,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455472117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:45:01,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525604317] [2024-11-13 12:45:01,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 12:45:01,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:01,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:45:01,093 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:45:01,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 12:45:01,312 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-13 12:45:01,312 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:45:01,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 12:45:01,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:45:01,698 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 [2024-11-13 12:45:01,916 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2024-11-13 12:45:01,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2024-11-13 12:45:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 12:45:01,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:45:02,045 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 29 treesize of output 25 [2024-11-13 12:45:02,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:45:02,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2024-11-13 12:45:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 12:45:02,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525604317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:45:02,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:45:02,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2024-11-13 12:45:02,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794360906] [2024-11-13 12:45:02,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:45:02,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 12:45:02,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:45:02,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 12:45:02,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1558, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 12:45:02,419 INFO L87 Difference]: Start difference. First operand 134 states and 146 transitions. Second operand has 43 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 43 states have internal predecessors, (100), 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) [2024-11-13 12:45:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:45:03,460 INFO L93 Difference]: Finished difference Result 167 states and 182 transitions. [2024-11-13 12:45:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 12:45:03,460 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 43 states have internal predecessors, (100), 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 50 [2024-11-13 12:45:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:45:03,461 INFO L225 Difference]: With dead ends: 167 [2024-11-13 12:45:03,461 INFO L226 Difference]: Without dead ends: 159 [2024-11-13 12:45:03,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=693, Invalid=3597, Unknown=0, NotChecked=0, Total=4290 [2024-11-13 12:45:03,462 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 131 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 12:45:03,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 150 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 12:45:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-13 12:45:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2024-11-13 12:45:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.1020408163265305) internal successors, (162), 147 states have internal predecessors, (162), 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) [2024-11-13 12:45:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 162 transitions. [2024-11-13 12:45:03,466 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 162 transitions. Word has length 50 [2024-11-13 12:45:03,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:45:03,467 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 162 transitions. [2024-11-13 12:45:03,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 43 states have internal predecessors, (100), 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) [2024-11-13 12:45:03,467 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 162 transitions. [2024-11-13 12:45:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 12:45:03,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:45:03,467 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:45:03,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 12:45:03,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:03,668 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:45:03,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:45:03,669 INFO L85 PathProgramCache]: Analyzing trace with hash -147685388, now seen corresponding path program 6 times [2024-11-13 12:45:03,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:45:03,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785746416] [2024-11-13 12:45:03,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:45:03,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:45:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:45:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:45:04,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:45:04,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785746416] [2024-11-13 12:45:04,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785746416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:45:04,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200548727] [2024-11-13 12:45:04,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 12:45:04,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:04,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:45:04,702 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:45:04,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 12:45:05,014 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-13 12:45:05,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:45:05,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-13 12:45:05,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:45:05,571 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 13 treesize of output 9 [2024-11-13 12:45:06,093 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-13 12:45:06,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 26 [2024-11-13 12:45:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 45 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:45:06,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:45:06,429 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 44 treesize of output 38 [2024-11-13 12:45:06,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:45:06,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 34 [2024-11-13 12:45:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 17 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:45:07,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200548727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:45:07,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:45:07,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 53 [2024-11-13 12:45:07,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503605945] [2024-11-13 12:45:07,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:45:07,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-13 12:45:07,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:45:07,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-13 12:45:07,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2512, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 12:45:07,377 INFO L87 Difference]: Start difference. First operand 148 states and 162 transitions. Second operand has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 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) [2024-11-13 12:45:12,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:45:12,141 INFO L93 Difference]: Finished difference Result 262 states and 286 transitions. [2024-11-13 12:45:12,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 12:45:12,142 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 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 53 [2024-11-13 12:45:12,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:45:12,143 INFO L225 Difference]: With dead ends: 262 [2024-11-13 12:45:12,143 INFO L226 Difference]: Without dead ends: 241 [2024-11-13 12:45:12,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1002, Invalid=8310, Unknown=0, NotChecked=0, Total=9312 [2024-11-13 12:45:12,144 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 150 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 12:45:12,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 461 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 12:45:12,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-13 12:45:12,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 177. [2024-11-13 12:45:12,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.1079545454545454) internal successors, (195), 176 states have internal predecessors, (195), 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) [2024-11-13 12:45:12,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 195 transitions. [2024-11-13 12:45:12,157 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 195 transitions. Word has length 53 [2024-11-13 12:45:12,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:45:12,157 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 195 transitions. [2024-11-13 12:45:12,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 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) [2024-11-13 12:45:12,158 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 195 transitions. [2024-11-13 12:45:12,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 12:45:12,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:45:12,158 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:45:12,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 12:45:12,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:12,362 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:45:12,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:45:12,362 INFO L85 PathProgramCache]: Analyzing trace with hash 847802102, now seen corresponding path program 7 times [2024-11-13 12:45:12,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:45:12,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758463311] [2024-11-13 12:45:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:45:12,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:45:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:45:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:45:13,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:45:13,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758463311] [2024-11-13 12:45:13,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758463311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:45:13,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638980626] [2024-11-13 12:45:13,272 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 12:45:13,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:13,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:45:13,275 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:45:13,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 12:45:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:45:13,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 12:45:13,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:45:13,834 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 13 treesize of output 9 [2024-11-13 12:45:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 53 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:45:14,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:45:14,088 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 15 treesize of output 13 [2024-11-13 12:45:14,091 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 16 treesize of output 12 [2024-11-13 12:45:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:45:14,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638980626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:45:14,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:45:14,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 48 [2024-11-13 12:45:14,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761320168] [2024-11-13 12:45:14,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:45:14,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-13 12:45:14,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:45:14,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-13 12:45:14,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 12:45:14,553 INFO L87 Difference]: Start difference. First operand 177 states and 195 transitions. Second operand has 48 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 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) [2024-11-13 12:45:16,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:45:16,315 INFO L93 Difference]: Finished difference Result 215 states and 232 transitions. [2024-11-13 12:45:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 12:45:16,315 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 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 57 [2024-11-13 12:45:16,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:45:16,316 INFO L225 Difference]: With dead ends: 215 [2024-11-13 12:45:16,316 INFO L226 Difference]: Without dead ends: 169 [2024-11-13 12:45:16,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1649 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=732, Invalid=5910, Unknown=0, NotChecked=0, Total=6642 [2024-11-13 12:45:16,317 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 65 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 12:45:16,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 325 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 12:45:16,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-13 12:45:16,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2024-11-13 12:45:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.1024096385542168) internal successors, (183), 166 states have internal predecessors, (183), 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) [2024-11-13 12:45:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 183 transitions. [2024-11-13 12:45:16,325 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 183 transitions. Word has length 57 [2024-11-13 12:45:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:45:16,325 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 183 transitions. [2024-11-13 12:45:16,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 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) [2024-11-13 12:45:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 183 transitions. [2024-11-13 12:45:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 12:45:16,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:45:16,327 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:45:16,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 12:45:16,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-13 12:45:16,528 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:45:16,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:45:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1056112043, now seen corresponding path program 8 times [2024-11-13 12:45:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:45:16,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300101691] [2024-11-13 12:45:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:45:16,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:45:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:45:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:45:17,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:45:17,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300101691] [2024-11-13 12:45:17,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300101691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:45:17,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022158274] [2024-11-13 12:45:17,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:45:17,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:17,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:45:17,362 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:45:17,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 12:45:17,552 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:45:17,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:45:17,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-13 12:45:17,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:45:18,004 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 [2024-11-13 12:45:20,583 INFO L349 Elim1Store]: treesize reduction 17, result has 48.5 percent of original size [2024-11-13 12:45:20,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 34 [2024-11-13 12:45:20,623 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 58 refuted. 4 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:45:20,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:45:21,263 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 [2024-11-13 12:45:21,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:45:21,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 45 [2024-11-13 12:45:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 51 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:45:22,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022158274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:45:22,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:45:22,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 23] total 60 [2024-11-13 12:45:22,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212022677] [2024-11-13 12:45:22,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:45:22,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-13 12:45:22,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:45:22,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-13 12:45:22,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=3217, Unknown=5, NotChecked=0, Total=3540 [2024-11-13 12:45:22,133 INFO L87 Difference]: Start difference. First operand 167 states and 183 transitions. Second operand has 60 states, 60 states have (on average 2.3333333333333335) internal successors, (140), 60 states have internal predecessors, (140), 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) [2024-11-13 12:45:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:45:28,181 INFO L93 Difference]: Finished difference Result 291 states and 318 transitions. [2024-11-13 12:45:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-13 12:45:28,181 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.3333333333333335) internal successors, (140), 60 states have internal predecessors, (140), 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 58 [2024-11-13 12:45:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:45:28,183 INFO L225 Difference]: With dead ends: 291 [2024-11-13 12:45:28,183 INFO L226 Difference]: Without dead ends: 268 [2024-11-13 12:45:28,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 3769 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1251, Invalid=10949, Unknown=10, NotChecked=0, Total=12210 [2024-11-13 12:45:28,184 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 100 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 2860 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 12:45:28,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 511 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2860 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 12:45:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-13 12:45:28,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 196. [2024-11-13 12:45:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.1076923076923078) internal successors, (216), 195 states have internal predecessors, (216), 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) [2024-11-13 12:45:28,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 216 transitions. [2024-11-13 12:45:28,188 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 216 transitions. Word has length 58 [2024-11-13 12:45:28,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:45:28,188 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 216 transitions. [2024-11-13 12:45:28,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.3333333333333335) internal successors, (140), 60 states have internal predecessors, (140), 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) [2024-11-13 12:45:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 216 transitions. [2024-11-13 12:45:28,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 12:45:28,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:45:28,190 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:45:28,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-13 12:45:28,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-13 12:45:28,390 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:45:28,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:45:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1334165925, now seen corresponding path program 9 times [2024-11-13 12:45:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:45:28,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017510849] [2024-11-13 12:45:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:45:28,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:45:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:45:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 23 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-13 12:45:29,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:45:29,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017510849] [2024-11-13 12:45:29,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017510849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:45:29,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366742405] [2024-11-13 12:45:29,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:45:29,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:29,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:45:29,180 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:45:29,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 12:45:29,537 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 12:45:29,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:45:29,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 12:45:29,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:45:29,756 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 13 treesize of output 9 [2024-11-13 12:45:29,950 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 7 treesize of output 3 [2024-11-13 12:45:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-13 12:45:29,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:45:30,055 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 15 treesize of output 13 [2024-11-13 12:45:30,057 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 16 treesize of output 12 [2024-11-13 12:45:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-13 12:45:30,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366742405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:45:30,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:45:30,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2024-11-13 12:45:30,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244179289] [2024-11-13 12:45:30,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:45:30,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 12:45:30,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:45:30,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 12:45:30,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=911, Unknown=0, NotChecked=0, Total=992 [2024-11-13 12:45:30,163 INFO L87 Difference]: Start difference. First operand 196 states and 216 transitions. Second operand has 32 states, 32 states have (on average 2.9375) internal successors, (94), 32 states have internal predecessors, (94), 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) [2024-11-13 12:45:30,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:45:30,959 INFO L93 Difference]: Finished difference Result 386 states and 417 transitions. [2024-11-13 12:45:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 12:45:30,960 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.9375) internal successors, (94), 32 states have internal predecessors, (94), 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 62 [2024-11-13 12:45:30,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:45:30,961 INFO L225 Difference]: With dead ends: 386 [2024-11-13 12:45:30,961 INFO L226 Difference]: Without dead ends: 274 [2024-11-13 12:45:30,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=180, Invalid=1982, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 12:45:30,962 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:45:30,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 415 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 12:45:30,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-13 12:45:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 256. [2024-11-13 12:45:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.1019607843137256) internal successors, (281), 255 states have internal predecessors, (281), 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) [2024-11-13 12:45:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 281 transitions. [2024-11-13 12:45:30,967 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 281 transitions. Word has length 62 [2024-11-13 12:45:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:45:30,968 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 281 transitions. [2024-11-13 12:45:30,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.9375) internal successors, (94), 32 states have internal predecessors, (94), 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) [2024-11-13 12:45:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 281 transitions. [2024-11-13 12:45:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 12:45:30,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:45:30,969 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:45:30,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 12:45:31,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:31,169 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:45:31,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:45:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1913029926, now seen corresponding path program 10 times [2024-11-13 12:45:31,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:45:31,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324223760] [2024-11-13 12:45:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:45:31,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:45:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:45:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 35 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:45:32,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:45:32,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324223760] [2024-11-13 12:45:32,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324223760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:45:32,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561102079] [2024-11-13 12:45:32,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:45:32,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:32,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:45:32,418 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:45:32,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 12:45:32,792 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:45:32,792 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:45:32,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-13 12:45:32,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:45:33,779 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 13 treesize of output 9 [2024-11-13 12:45:34,691 INFO L349 Elim1Store]: treesize reduction 21, result has 48.8 percent of original size [2024-11-13 12:45:34,691 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 15 case distinctions, treesize of input 49 treesize of output 42 [2024-11-13 12:45:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 95 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:45:34,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:45:35,469 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 [2024-11-13 12:45:35,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:45:35,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 74 treesize of output 56 [2024-11-13 12:45:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 35 proven. 70 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:45:36,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561102079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:45:36,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:45:36,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26, 26] total 70 [2024-11-13 12:45:36,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125325700] [2024-11-13 12:45:36,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:45:36,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-13 12:45:36,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:45:36,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-13 12:45:36,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=4442, Unknown=0, NotChecked=0, Total=4830 [2024-11-13 12:45:36,804 INFO L87 Difference]: Start difference. First operand 256 states and 281 transitions. Second operand has 70 states, 70 states have (on average 2.257142857142857) internal successors, (158), 70 states have internal predecessors, (158), 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) [2024-11-13 12:45:43,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:45:43,929 INFO L93 Difference]: Finished difference Result 446 states and 489 transitions. [2024-11-13 12:45:43,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-13 12:45:43,929 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.257142857142857) internal successors, (158), 70 states have internal predecessors, (158), 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 63 [2024-11-13 12:45:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:45:43,931 INFO L225 Difference]: With dead ends: 446 [2024-11-13 12:45:43,931 INFO L226 Difference]: Without dead ends: 402 [2024-11-13 12:45:43,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3810 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1421, Invalid=14329, Unknown=0, NotChecked=0, Total=15750 [2024-11-13 12:45:43,933 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 154 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 3852 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 3877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 12:45:43,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 720 Invalid, 3877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3852 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 12:45:43,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-13 12:45:43,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 290. [2024-11-13 12:45:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.1038062283737025) internal successors, (319), 289 states have internal predecessors, (319), 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) [2024-11-13 12:45:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 319 transitions. [2024-11-13 12:45:43,943 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 319 transitions. Word has length 63 [2024-11-13 12:45:43,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:45:43,943 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 319 transitions. [2024-11-13 12:45:43,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.257142857142857) internal successors, (158), 70 states have internal predecessors, (158), 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) [2024-11-13 12:45:43,943 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 319 transitions. [2024-11-13 12:45:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 12:45:43,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:45:43,944 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:45:43,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 12:45:44,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-13 12:45:44,145 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:45:44,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:45:44,145 INFO L85 PathProgramCache]: Analyzing trace with hash 337432907, now seen corresponding path program 11 times [2024-11-13 12:45:44,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:45:44,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627032055] [2024-11-13 12:45:44,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:45:44,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:45:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:45:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 52 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 12:45:44,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:45:44,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627032055] [2024-11-13 12:45:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627032055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:45:44,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632748108] [2024-11-13 12:45:44,741 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 12:45:44,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:44,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:45:44,743 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:45:44,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 12:45:45,195 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 12:45:45,195 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:45:45,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-13 12:45:45,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:45:45,634 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 11 treesize of output 7 [2024-11-13 12:45:45,655 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 7 treesize of output 3 [2024-11-13 12:45:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 12:45:45,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:45:45,668 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 13 treesize of output 11 [2024-11-13 12:45:45,675 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 14 treesize of output 12 [2024-11-13 12:45:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 26 proven. 35 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 12:45:46,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632748108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:45:46,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:45:46,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 42 [2024-11-13 12:45:46,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12375635] [2024-11-13 12:45:46,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:45:46,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 12:45:46,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:45:46,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 12:45:46,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1404, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 12:45:46,058 INFO L87 Difference]: Start difference. First operand 290 states and 319 transitions. Second operand has 42 states, 42 states have (on average 2.761904761904762) internal successors, (116), 42 states have internal predecessors, (116), 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) [2024-11-13 12:45:46,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:45:46,908 INFO L93 Difference]: Finished difference Result 295 states and 324 transitions. [2024-11-13 12:45:46,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 12:45:46,908 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.761904761904762) internal successors, (116), 42 states have internal predecessors, (116), 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 65 [2024-11-13 12:45:46,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:45:46,910 INFO L225 Difference]: With dead ends: 295 [2024-11-13 12:45:46,910 INFO L226 Difference]: Without dead ends: 295 [2024-11-13 12:45:46,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1045, Invalid=3647, Unknown=0, NotChecked=0, Total=4692 [2024-11-13 12:45:46,911 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 176 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 12:45:46,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 123 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 12:45:46,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-13 12:45:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 286. [2024-11-13 12:45:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.105263157894737) internal successors, (315), 285 states have internal predecessors, (315), 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) [2024-11-13 12:45:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 315 transitions. [2024-11-13 12:45:46,917 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 315 transitions. Word has length 65 [2024-11-13 12:45:46,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:45:46,917 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 315 transitions. [2024-11-13 12:45:46,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.761904761904762) internal successors, (116), 42 states have internal predecessors, (116), 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) [2024-11-13 12:45:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 315 transitions. [2024-11-13 12:45:46,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 12:45:46,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:45:46,919 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 6, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:45:46,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-13 12:45:47,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-13 12:45:47,120 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:45:47,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:45:47,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1780682973, now seen corresponding path program 12 times [2024-11-13 12:45:47,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:45:47,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101166325] [2024-11-13 12:45:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:45:47,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:45:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:45:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 51 proven. 93 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:45:48,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:45:48,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101166325] [2024-11-13 12:45:48,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101166325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:45:48,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139778227] [2024-11-13 12:45:48,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 12:45:48,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:48,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:45:48,410 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:45:48,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 12:45:48,928 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-13 12:45:48,928 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:45:48,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-13 12:45:48,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:45:49,970 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 13 treesize of output 9 [2024-11-13 12:45:51,154 INFO L349 Elim1Store]: treesize reduction 25, result has 49.0 percent of original size [2024-11-13 12:45:51,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 57 treesize of output 50 [2024-11-13 12:45:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 12 proven. 127 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:45:51,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:45:52,223 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 89 treesize of output 77 [2024-11-13 12:45:52,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:45:52,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 67 [2024-11-13 12:45:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 47 proven. 92 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:45:53,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139778227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:45:53,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:45:53,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29, 29] total 78 [2024-11-13 12:45:53,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966527075] [2024-11-13 12:45:53,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:45:53,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-13 12:45:53,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:45:53,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-13 12:45:53,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=5546, Unknown=0, NotChecked=0, Total=6006 [2024-11-13 12:45:53,852 INFO L87 Difference]: Start difference. First operand 286 states and 315 transitions. Second operand has 78 states, 78 states have (on average 2.217948717948718) internal successors, (173), 78 states have internal predecessors, (173), 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) [2024-11-13 12:46:01,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:46:01,585 INFO L93 Difference]: Finished difference Result 492 states and 541 transitions. [2024-11-13 12:46:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-13 12:46:01,586 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.217948717948718) internal successors, (173), 78 states have internal predecessors, (173), 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 68 [2024-11-13 12:46:01,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:46:01,587 INFO L225 Difference]: With dead ends: 492 [2024-11-13 12:46:01,587 INFO L226 Difference]: Without dead ends: 444 [2024-11-13 12:46:01,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4738 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1633, Invalid=17827, Unknown=0, NotChecked=0, Total=19460 [2024-11-13 12:46:01,589 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 248 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 4340 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 4371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 12:46:01,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 711 Invalid, 4371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4340 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 12:46:01,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-13 12:46:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 320. [2024-11-13 12:46:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.1065830721003134) internal successors, (353), 319 states have internal predecessors, (353), 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) [2024-11-13 12:46:01,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 353 transitions. [2024-11-13 12:46:01,595 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 353 transitions. Word has length 68 [2024-11-13 12:46:01,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:46:01,596 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 353 transitions. [2024-11-13 12:46:01,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.217948717948718) internal successors, (173), 78 states have internal predecessors, (173), 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) [2024-11-13 12:46:01,596 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 353 transitions. [2024-11-13 12:46:01,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-13 12:46:01,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:46:01,597 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:46:01,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 12:46:01,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-13 12:46:01,798 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:46:01,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:46:01,798 INFO L85 PathProgramCache]: Analyzing trace with hash 532474311, now seen corresponding path program 2 times [2024-11-13 12:46:01,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:46:01,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176488071] [2024-11-13 12:46:01,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:46:01,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:46:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:46:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 76 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:46:02,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:46:02,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176488071] [2024-11-13 12:46:02,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176488071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:46:02,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358368886] [2024-11-13 12:46:02,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:46:02,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:46:02,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:46:02,979 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:46:02,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 12:46:03,195 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:46:03,195 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:46:03,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 12:46:03,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:46:03,397 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 13 treesize of output 9 [2024-11-13 12:46:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 35 proven. 62 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 12:46:03,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:46:03,748 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 15 treesize of output 13 [2024-11-13 12:46:03,750 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 16 treesize of output 12 [2024-11-13 12:46:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 35 proven. 62 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 12:46:03,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358368886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:46:03,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:46:03,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 17, 17] total 42 [2024-11-13 12:46:03,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323530725] [2024-11-13 12:46:03,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:46:03,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 12:46:03,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:46:03,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 12:46:03,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1589, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 12:46:03,909 INFO L87 Difference]: Start difference. First operand 320 states and 353 transitions. Second operand has 42 states, 42 states have (on average 2.9285714285714284) internal successors, (123), 42 states have internal predecessors, (123), 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) [2024-11-13 12:46:06,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:46:06,321 INFO L93 Difference]: Finished difference Result 640 states and 689 transitions. [2024-11-13 12:46:06,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-13 12:46:06,321 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.9285714285714284) internal successors, (123), 42 states have internal predecessors, (123), 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 69 [2024-11-13 12:46:06,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:46:06,323 INFO L225 Difference]: With dead ends: 640 [2024-11-13 12:46:06,323 INFO L226 Difference]: Without dead ends: 458 [2024-11-13 12:46:06,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1792 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=803, Invalid=6679, Unknown=0, NotChecked=0, Total=7482 [2024-11-13 12:46:06,324 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 268 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 12:46:06,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 440 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 12:46:06,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-13 12:46:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 412. [2024-11-13 12:46:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.099756690997567) internal successors, (452), 411 states have internal predecessors, (452), 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) [2024-11-13 12:46:06,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 452 transitions. [2024-11-13 12:46:06,334 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 452 transitions. Word has length 69 [2024-11-13 12:46:06,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:46:06,334 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 452 transitions. [2024-11-13 12:46:06,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9285714285714284) internal successors, (123), 42 states have internal predecessors, (123), 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) [2024-11-13 12:46:06,334 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 452 transitions. [2024-11-13 12:46:06,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 12:46:06,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:46:06,336 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:46:06,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 12:46:06,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:46:06,537 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:46:06,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:46:06,537 INFO L85 PathProgramCache]: Analyzing trace with hash 271310402, now seen corresponding path program 13 times [2024-11-13 12:46:06,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:46:06,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115608392] [2024-11-13 12:46:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:46:06,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:46:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:46:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 12:46:07,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:46:07,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115608392] [2024-11-13 12:46:07,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115608392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:46:07,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802548588] [2024-11-13 12:46:07,690 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 12:46:07,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:46:07,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:46:07,692 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:46:07,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 12:46:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:46:07,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 12:46:07,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:46:08,412 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 [2024-11-13 12:46:08,601 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2024-11-13 12:46:08,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2024-11-13 12:46:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 62 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 12:46:08,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:46:08,729 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 29 treesize of output 25 [2024-11-13 12:46:08,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:46:08,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2024-11-13 12:46:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 32 proven. 51 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 12:46:09,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802548588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:46:09,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:46:09,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 53 [2024-11-13 12:46:09,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592884712] [2024-11-13 12:46:09,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:46:09,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-13 12:46:09,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:46:09,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-13 12:46:09,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=2357, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 12:46:09,363 INFO L87 Difference]: Start difference. First operand 412 states and 452 transitions. Second operand has 53 states, 53 states have (on average 2.5283018867924527) internal successors, (134), 53 states have internal predecessors, (134), 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) [2024-11-13 12:46:11,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:46:11,023 INFO L93 Difference]: Finished difference Result 424 states and 464 transitions. [2024-11-13 12:46:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 12:46:11,023 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.5283018867924527) internal successors, (134), 53 states have internal predecessors, (134), 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 70 [2024-11-13 12:46:11,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:46:11,025 INFO L225 Difference]: With dead ends: 424 [2024-11-13 12:46:11,025 INFO L226 Difference]: Without dead ends: 416 [2024-11-13 12:46:11,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 2142 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1253, Invalid=5719, Unknown=0, NotChecked=0, Total=6972 [2024-11-13 12:46:11,026 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 175 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 12:46:11,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 191 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 12:46:11,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-13 12:46:11,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 412. [2024-11-13 12:46:11,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.099756690997567) internal successors, (452), 411 states have internal predecessors, (452), 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) [2024-11-13 12:46:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 452 transitions. [2024-11-13 12:46:11,032 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 452 transitions. Word has length 70 [2024-11-13 12:46:11,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:46:11,032 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 452 transitions. [2024-11-13 12:46:11,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.5283018867924527) internal successors, (134), 53 states have internal predecessors, (134), 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) [2024-11-13 12:46:11,032 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 452 transitions. [2024-11-13 12:46:11,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 12:46:11,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:46:11,034 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 7, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:46:11,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 12:46:11,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:46:11,234 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:46:11,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:46:11,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2027056808, now seen corresponding path program 14 times [2024-11-13 12:46:11,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:46:11,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35627307] [2024-11-13 12:46:11,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:46:11,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:46:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:46:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 70 proven. 113 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:46:12,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:46:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35627307] [2024-11-13 12:46:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35627307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:46:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575066655] [2024-11-13 12:46:12,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:46:12,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:46:12,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:46:12,783 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:46:12,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 12:46:13,042 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:46:13,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:46:13,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-13 12:46:13,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:46:13,847 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 [2024-11-13 12:46:28,954 INFO L349 Elim1Store]: treesize reduction 29, result has 49.1 percent of original size [2024-11-13 12:46:28,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 78 treesize of output 58 [2024-11-13 12:46:28,958 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-13 12:46:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 28 proven. 127 refuted. 23 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:46:29,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:46:31,192 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 104 treesize of output 90 [2024-11-13 12:46:31,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:46:31,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 104 treesize of output 78 [2024-11-13 12:46:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 61 proven. 117 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:46:32,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575066655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:46:32,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:46:32,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 32, 32] total 84 [2024-11-13 12:46:32,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635587958] [2024-11-13 12:46:32,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:46:32,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-13 12:46:32,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:46:32,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-13 12:46:32,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=562, Invalid=6376, Unknown=34, NotChecked=0, Total=6972 [2024-11-13 12:46:32,387 INFO L87 Difference]: Start difference. First operand 412 states and 452 transitions. Second operand has 84 states, 84 states have (on average 2.2023809523809526) internal successors, (185), 84 states have internal predecessors, (185), 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) [2024-11-13 12:47:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:47:16,424 INFO L93 Difference]: Finished difference Result 705 states and 772 transitions. [2024-11-13 12:47:16,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-13 12:47:16,425 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.2023809523809526) internal successors, (185), 84 states have internal predecessors, (185), 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 73 [2024-11-13 12:47:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:47:16,426 INFO L225 Difference]: With dead ends: 705 [2024-11-13 12:47:16,426 INFO L226 Difference]: Without dead ends: 648 [2024-11-13 12:47:16,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 7215 ImplicationChecksByTransitivity, 56.2s TimeCoverageRelationStatistics Valid=2155, Invalid=22252, Unknown=85, NotChecked=0, Total=24492 [2024-11-13 12:47:16,428 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 176 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 47 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 5159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 5107 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-13 12:47:16,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 724 Invalid, 5159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 5107 Invalid, 5 Unknown, 0 Unchecked, 6.8s Time] [2024-11-13 12:47:16,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-11-13 12:47:16,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 457. [2024-11-13 12:47:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.1008771929824561) internal successors, (502), 456 states have internal predecessors, (502), 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) [2024-11-13 12:47:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 502 transitions. [2024-11-13 12:47:16,437 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 502 transitions. Word has length 73 [2024-11-13 12:47:16,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:47:16,437 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 502 transitions. [2024-11-13 12:47:16,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.2023809523809526) internal successors, (185), 84 states have internal predecessors, (185), 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) [2024-11-13 12:47:16,438 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 502 transitions. [2024-11-13 12:47:16,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 12:47:16,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:47:16,439 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:47:16,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 12:47:16,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-13 12:47:16,640 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:47:16,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:47:16,640 INFO L85 PathProgramCache]: Analyzing trace with hash -204113667, now seen corresponding path program 15 times [2024-11-13 12:47:16,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:47:16,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485184573] [2024-11-13 12:47:16,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:47:16,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:47:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:47:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 98 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 12:47:18,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:47:18,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485184573] [2024-11-13 12:47:18,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485184573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:47:18,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3148080] [2024-11-13 12:47:18,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:47:18,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:47:18,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:47:18,559 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:47:18,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 12:47:18,908 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 12:47:18,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:47:18,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-13 12:47:18,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:47:18,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-13 12:47:19,343 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 [2024-11-13 12:47:20,125 INFO L349 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2024-11-13 12:47:20,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 39 [2024-11-13 12:47:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 30 proven. 57 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-13 12:47:20,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:47:22,243 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 53 treesize of output 45 [2024-11-13 12:47:22,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:47:22,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 125 [2024-11-13 12:47:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 22 proven. 69 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 12:47:23,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3148080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:47:23,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:47:23,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 26] total 69 [2024-11-13 12:47:23,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034520185] [2024-11-13 12:47:23,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:47:23,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-13 12:47:23,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:47:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-13 12:47:23,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=4330, Unknown=0, NotChecked=0, Total=4692 [2024-11-13 12:47:23,930 INFO L87 Difference]: Start difference. First operand 457 states and 502 transitions. Second operand has 69 states, 69 states have (on average 2.4057971014492754) internal successors, (166), 69 states have internal predecessors, (166), 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) [2024-11-13 12:47:28,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 12:47:29,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:47:29,699 INFO L93 Difference]: Finished difference Result 653 states and 698 transitions. [2024-11-13 12:47:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 12:47:29,700 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.4057971014492754) internal successors, (166), 69 states have internal predecessors, (166), 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 75 [2024-11-13 12:47:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:47:29,701 INFO L225 Difference]: With dead ends: 653 [2024-11-13 12:47:29,702 INFO L226 Difference]: Without dead ends: 520 [2024-11-13 12:47:29,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3534 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1274, Invalid=11382, Unknown=0, NotChecked=0, Total=12656 [2024-11-13 12:47:29,703 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 78 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 12:47:29,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 253 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1317 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 12:47:29,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-13 12:47:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 354. [2024-11-13 12:47:29,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 1.0991501416430596) internal successors, (388), 353 states have internal predecessors, (388), 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) [2024-11-13 12:47:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 388 transitions. [2024-11-13 12:47:29,711 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 388 transitions. Word has length 75 [2024-11-13 12:47:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:47:29,711 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 388 transitions. [2024-11-13 12:47:29,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.4057971014492754) internal successors, (166), 69 states have internal predecessors, (166), 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) [2024-11-13 12:47:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 388 transitions. [2024-11-13 12:47:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 12:47:29,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:47:29,713 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:47:29,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 12:47:29,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-13 12:47:29,914 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:47:29,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:47:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1091806746, now seen corresponding path program 16 times [2024-11-13 12:47:29,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:47:29,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682916889] [2024-11-13 12:47:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:47:29,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:47:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:47:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 86 proven. 78 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:47:31,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:47:31,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682916889] [2024-11-13 12:47:31,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682916889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:47:31,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985962296] [2024-11-13 12:47:31,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:47:31,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:47:31,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:47:31,511 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:47:31,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 12:47:31,989 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:47:31,989 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:47:31,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-13 12:47:31,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:47:32,298 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 13 treesize of output 9 [2024-11-13 12:47:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 18 proven. 95 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-13 12:47:32,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:47:32,776 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 15 treesize of output 13 [2024-11-13 12:47:32,778 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 16 treesize of output 12 [2024-11-13 12:47:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 18 proven. 95 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-13 12:47:32,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985962296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:47:32,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:47:32,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 19, 19] total 46 [2024-11-13 12:47:32,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614020270] [2024-11-13 12:47:32,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:47:32,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 12:47:32,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:47:32,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 12:47:32,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1918, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 12:47:32,949 INFO L87 Difference]: Start difference. First operand 354 states and 388 transitions. Second operand has 46 states, 46 states have (on average 2.9565217391304346) internal successors, (136), 46 states have internal predecessors, (136), 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) [2024-11-13 12:47:35,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:47:35,801 INFO L93 Difference]: Finished difference Result 753 states and 805 transitions. [2024-11-13 12:47:35,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-13 12:47:35,802 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9565217391304346) internal successors, (136), 46 states have internal predecessors, (136), 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 77 [2024-11-13 12:47:35,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:47:35,803 INFO L225 Difference]: With dead ends: 753 [2024-11-13 12:47:35,804 INFO L226 Difference]: Without dead ends: 448 [2024-11-13 12:47:35,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1862 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=741, Invalid=7449, Unknown=0, NotChecked=0, Total=8190 [2024-11-13 12:47:35,805 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 135 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:47:35,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 452 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 12:47:35,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-11-13 12:47:35,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 428. [2024-11-13 12:47:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.0913348946135832) internal successors, (466), 427 states have internal predecessors, (466), 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) [2024-11-13 12:47:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 466 transitions. [2024-11-13 12:47:35,813 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 466 transitions. Word has length 77 [2024-11-13 12:47:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:47:35,813 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 466 transitions. [2024-11-13 12:47:35,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9565217391304346) internal successors, (136), 46 states have internal predecessors, (136), 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) [2024-11-13 12:47:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 466 transitions. [2024-11-13 12:47:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 12:47:35,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:47:35,815 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 8, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:47:35,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 12:47:36,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-13 12:47:36,016 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:47:36,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:47:36,016 INFO L85 PathProgramCache]: Analyzing trace with hash -850703601, now seen corresponding path program 17 times [2024-11-13 12:47:36,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:47:36,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260975582] [2024-11-13 12:47:36,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:47:36,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:47:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:47:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 92 proven. 135 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:47:37,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:47:37,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260975582] [2024-11-13 12:47:37,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260975582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:47:37,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460523723] [2024-11-13 12:47:37,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 12:47:37,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:47:37,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:47:37,922 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:47:37,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 12:47:38,474 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-13 12:47:38,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:47:38,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-13 12:47:38,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:47:39,548 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 [2024-11-13 12:48:13,073 INFO L349 Elim1Store]: treesize reduction 33, result has 49.2 percent of original size [2024-11-13 12:48:13,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 88 treesize of output 66 [2024-11-13 12:48:13,078 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-13 12:48:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 25 proven. 156 refuted. 41 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:48:13,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:48:15,190 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 119 treesize of output 103 [2024-11-13 12:48:15,204 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:48:15,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 119 treesize of output 89 [2024-11-13 12:48:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 77 proven. 145 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:48:16,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460523723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:48:16,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:48:16,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 35, 35] total 92 [2024-11-13 12:48:16,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860482018] [2024-11-13 12:48:16,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:48:16,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-13 12:48:16,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:16,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-13 12:48:16,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=7659, Unknown=55, NotChecked=0, Total=8372 [2024-11-13 12:48:16,807 INFO L87 Difference]: Start difference. First operand 428 states and 466 transitions. Second operand has 92 states, 92 states have (on average 2.1739130434782608) internal successors, (200), 92 states have internal predecessors, (200), 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) [2024-11-13 12:49:08,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:08,662 INFO L93 Difference]: Finished difference Result 828 states and 903 transitions. [2024-11-13 12:49:08,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-13 12:49:08,663 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.1739130434782608) internal successors, (200), 92 states have internal predecessors, (200), 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 78 [2024-11-13 12:49:08,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:08,664 INFO L225 Difference]: With dead ends: 828 [2024-11-13 12:49:08,664 INFO L226 Difference]: Without dead ends: 763 [2024-11-13 12:49:08,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 90 SyntacticMatches, 6 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8898 ImplicationChecksByTransitivity, 84.9s TimeCoverageRelationStatistics Valid=2570, Invalid=27077, Unknown=109, NotChecked=0, Total=29756 [2024-11-13 12:49:08,666 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 173 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 4863 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 4889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4863 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:08,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 673 Invalid, 4889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4863 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2024-11-13 12:49:08,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-11-13 12:49:08,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 473. [2024-11-13 12:49:08,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.0932203389830508) internal successors, (516), 472 states have internal predecessors, (516), 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) [2024-11-13 12:49:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 516 transitions. [2024-11-13 12:49:08,675 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 516 transitions. Word has length 78 [2024-11-13 12:49:08,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:08,675 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 516 transitions. [2024-11-13 12:49:08,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.1739130434782608) internal successors, (200), 92 states have internal predecessors, (200), 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) [2024-11-13 12:49:08,675 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 516 transitions. [2024-11-13 12:49:08,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 12:49:08,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:08,677 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 9, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:08,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 12:49:08,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:08,879 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:49:08,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:08,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1818240138, now seen corresponding path program 18 times [2024-11-13 12:49:08,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:08,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088208441] [2024-11-13 12:49:08,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:08,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 117 proven. 159 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:49:10,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:10,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088208441] [2024-11-13 12:49:10,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088208441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:10,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9984885] [2024-11-13 12:49:10,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 12:49:10,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:10,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:10,861 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:10,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 12:49:11,803 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-13 12:49:11,803 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:11,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-11-13 12:49:11,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:13,155 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 13 treesize of output 9 [2024-11-13 12:49:15,708 INFO L349 Elim1Store]: treesize reduction 37, result has 49.3 percent of original size [2024-11-13 12:49:15,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 81 treesize of output 74 [2024-11-13 12:49:15,711 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-13 12:49:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 19 proven. 252 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:49:15,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:18,225 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 134 treesize of output 116 [2024-11-13 12:49:18,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:49:18,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 134 treesize of output 100 [2024-11-13 12:49:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 95 proven. 176 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:49:21,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9984885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:21,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:21,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 38, 38] total 102 [2024-11-13 12:49:21,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995338927] [2024-11-13 12:49:21,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:21,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-11-13 12:49:21,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:21,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-11-13 12:49:21,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=761, Invalid=9541, Unknown=0, NotChecked=0, Total=10302 [2024-11-13 12:49:21,505 INFO L87 Difference]: Start difference. First operand 473 states and 516 transitions. Second operand has 102 states, 102 states have (on average 2.1372549019607843) internal successors, (218), 102 states have internal predecessors, (218), 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) [2024-11-13 12:49:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:36,589 INFO L93 Difference]: Finished difference Result 922 states and 1010 transitions. [2024-11-13 12:49:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-13 12:49:36,589 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.1372549019607843) internal successors, (218), 102 states have internal predecessors, (218), 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 83 [2024-11-13 12:49:36,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:36,591 INFO L225 Difference]: With dead ends: 922 [2024-11-13 12:49:36,591 INFO L226 Difference]: Without dead ends: 853 [2024-11-13 12:49:36,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8604 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=2508, Invalid=30434, Unknown=0, NotChecked=0, Total=32942 [2024-11-13 12:49:36,594 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 239 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 8002 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 8049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 8002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:36,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1022 Invalid, 8049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 8002 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-13 12:49:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2024-11-13 12:49:36,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 518. [2024-11-13 12:49:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.0947775628626693) internal successors, (566), 517 states have internal predecessors, (566), 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) [2024-11-13 12:49:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 566 transitions. [2024-11-13 12:49:36,603 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 566 transitions. Word has length 83 [2024-11-13 12:49:36,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:36,603 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 566 transitions. [2024-11-13 12:49:36,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.1372549019607843) internal successors, (218), 102 states have internal predecessors, (218), 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) [2024-11-13 12:49:36,603 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 566 transitions. [2024-11-13 12:49:36,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-13 12:49:36,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:36,605 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:36,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 12:49:36,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-13 12:49:36,805 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:49:36,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash 232753723, now seen corresponding path program 19 times [2024-11-13 12:49:36,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:36,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379758122] [2024-11-13 12:49:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:36,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 26 proven. 99 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-13 12:49:37,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:37,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379758122] [2024-11-13 12:49:37,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379758122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:37,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518585972] [2024-11-13 12:49:37,771 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 12:49:37,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:37,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:37,773 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:37,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-13 12:49:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:38,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-13 12:49:38,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:38,809 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 11 treesize of output 7 [2024-11-13 12:49:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 39 proven. 86 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-13 12:49:38,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:38,849 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 13 treesize of output 11 [2024-11-13 12:49:38,851 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 14 treesize of output 12 [2024-11-13 12:49:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 55 proven. 70 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-13 12:49:39,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518585972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:39,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:39,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 54 [2024-11-13 12:49:39,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138405934] [2024-11-13 12:49:39,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:39,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-13 12:49:39,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-13 12:49:39,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=2348, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 12:49:39,468 INFO L87 Difference]: Start difference. First operand 518 states and 566 transitions. Second operand has 54 states, 54 states have (on average 2.814814814814815) internal successors, (152), 54 states have internal predecessors, (152), 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) [2024-11-13 12:49:40,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:40,987 INFO L93 Difference]: Finished difference Result 519 states and 565 transitions. [2024-11-13 12:49:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 12:49:40,988 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.814814814814815) internal successors, (152), 54 states have internal predecessors, (152), 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 85 [2024-11-13 12:49:40,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:40,990 INFO L225 Difference]: With dead ends: 519 [2024-11-13 12:49:40,990 INFO L226 Difference]: Without dead ends: 519 [2024-11-13 12:49:40,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2255 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1729, Invalid=6103, Unknown=0, NotChecked=0, Total=7832 [2024-11-13 12:49:40,991 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 94 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:40,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 148 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 12:49:40,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-11-13 12:49:40,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 508. [2024-11-13 12:49:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.0927021696252466) internal successors, (554), 507 states have internal predecessors, (554), 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) [2024-11-13 12:49:40,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 554 transitions. [2024-11-13 12:49:40,999 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 554 transitions. Word has length 85 [2024-11-13 12:49:41,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:41,000 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 554 transitions. [2024-11-13 12:49:41,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.814814814814815) internal successors, (152), 54 states have internal predecessors, (152), 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) [2024-11-13 12:49:41,000 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 554 transitions. [2024-11-13 12:49:41,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-13 12:49:41,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:41,002 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:41,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-13 12:49:41,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:41,203 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:49:41,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:41,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1008731449, now seen corresponding path program 20 times [2024-11-13 12:49:41,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:41,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720092989] [2024-11-13 12:49:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:41,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 13 proven. 132 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 12:49:43,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:43,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720092989] [2024-11-13 12:49:43,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720092989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:43,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984935509] [2024-11-13 12:49:43,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:49:43,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:43,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:43,158 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:43,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 12:49:43,433 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:49:43,433 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:43,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 12:49:43,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:44,343 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 [2024-11-13 12:49:44,800 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-13 12:49:44,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 26 [2024-11-13 12:49:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 38 proven. 107 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 12:49:44,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:45,078 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 44 treesize of output 38 [2024-11-13 12:49:45,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:49:45,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 34 [2024-11-13 12:49:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 53 proven. 92 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 12:49:46,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984935509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:46,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:46,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 68 [2024-11-13 12:49:46,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010828676] [2024-11-13 12:49:46,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:46,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-13 12:49:46,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:46,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-13 12:49:46,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=3980, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 12:49:46,271 INFO L87 Difference]: Start difference. First operand 508 states and 554 transitions. Second operand has 68 states, 68 states have (on average 2.4558823529411766) internal successors, (167), 68 states have internal predecessors, (167), 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) [2024-11-13 12:49:49,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:49,149 INFO L93 Difference]: Finished difference Result 527 states and 574 transitions. [2024-11-13 12:49:49,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 12:49:49,149 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.4558823529411766) internal successors, (167), 68 states have internal predecessors, (167), 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 85 [2024-11-13 12:49:49,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:49,152 INFO L225 Difference]: With dead ends: 527 [2024-11-13 12:49:49,152 INFO L226 Difference]: Without dead ends: 517 [2024-11-13 12:49:49,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 3325 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1727, Invalid=9403, Unknown=0, NotChecked=0, Total=11130 [2024-11-13 12:49:49,153 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 268 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:49,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 229 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 12:49:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-13 12:49:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 510. [2024-11-13 12:49:49,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.0943025540275049) internal successors, (557), 509 states have internal predecessors, (557), 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) [2024-11-13 12:49:49,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 557 transitions. [2024-11-13 12:49:49,160 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 557 transitions. Word has length 85 [2024-11-13 12:49:49,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:49,160 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 557 transitions. [2024-11-13 12:49:49,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.4558823529411766) internal successors, (167), 68 states have internal predecessors, (167), 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) [2024-11-13 12:49:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 557 transitions. [2024-11-13 12:49:49,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-13 12:49:49,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:49,163 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:49,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-13 12:49:49,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:49,363 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:49:49,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:49,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1508650049, now seen corresponding path program 21 times [2024-11-13 12:49:49,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:49,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599207017] [2024-11-13 12:49:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:49,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 145 proven. 185 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 12:49:51,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:51,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599207017] [2024-11-13 12:49:51,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599207017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:51,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664455915] [2024-11-13 12:49:51,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:49:51,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:51,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:51,400 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:51,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-13 12:49:52,227 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-13 12:49:52,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:52,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 182 conjuncts are in the unsatisfiable core [2024-11-13 12:49:52,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:52,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-13 12:49:52,819 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 13 treesize of output 9 [2024-11-13 12:49:55,462 INFO L349 Elim1Store]: treesize reduction 36, result has 55.6 percent of original size [2024-11-13 12:49:55,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 87 [2024-11-13 12:49:55,467 WARN L672 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2024-11-13 12:49:55,514 WARN L672 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2024-11-13 12:49:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 24 proven. 124 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-13 12:49:55,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:59,889 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 149 treesize of output 129 [2024-11-13 12:49:59,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 111 [2024-11-13 12:50:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 5 proven. 246 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 12:50:03,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664455915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:50:03,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:50:03,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 37] total 99 [2024-11-13 12:50:03,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970097202] [2024-11-13 12:50:03,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:50:03,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-11-13 12:50:03,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:03,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-11-13 12:50:03,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=864, Invalid=9036, Unknown=0, NotChecked=0, Total=9900 [2024-11-13 12:50:03,830 INFO L87 Difference]: Start difference. First operand 510 states and 557 transitions. Second operand has 100 states, 99 states have (on average 2.0303030303030303) internal successors, (201), 100 states have internal predecessors, (201), 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) [2024-11-13 12:50:22,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:22,845 INFO L93 Difference]: Finished difference Result 1141 states and 1256 transitions. [2024-11-13 12:50:22,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-11-13 12:50:22,845 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.0303030303030303) internal successors, (201), 100 states have internal predecessors, (201), 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 88 [2024-11-13 12:50:22,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:22,848 INFO L225 Difference]: With dead ends: 1141 [2024-11-13 12:50:22,848 INFO L226 Difference]: Without dead ends: 1079 [2024-11-13 12:50:22,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10038 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=3065, Invalid=36337, Unknown=0, NotChecked=0, Total=39402 [2024-11-13 12:50:22,851 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 421 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 7130 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 7389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 7130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:22,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 839 Invalid, 7389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 7130 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-13 12:50:22,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-13 12:50:22,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 567. [2024-11-13 12:50:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.1042402826855124) internal successors, (625), 566 states have internal predecessors, (625), 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) [2024-11-13 12:50:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 625 transitions. [2024-11-13 12:50:22,864 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 625 transitions. Word has length 88 [2024-11-13 12:50:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:22,864 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 625 transitions. [2024-11-13 12:50:22,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 2.0303030303030303) internal successors, (201), 100 states have internal predecessors, (201), 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) [2024-11-13 12:50:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 625 transitions. [2024-11-13 12:50:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-13 12:50:22,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:22,866 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:50:22,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-13 12:50:23,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:23,067 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:50:23,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1513498185, now seen corresponding path program 3 times [2024-11-13 12:50:23,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:23,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153773865] [2024-11-13 12:50:23,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:23,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 151 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:24,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:24,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153773865] [2024-11-13 12:50:24,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153773865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:50:24,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841633109] [2024-11-13 12:50:24,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:50:24,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:24,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:50:24,681 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:50:24,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-13 12:50:27,955 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-13 12:50:27,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:50:27,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-13 12:50:27,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:50:29,137 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 11 treesize of output 7 [2024-11-13 12:50:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 49 proven. 205 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:50:29,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:50:30,491 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 15 treesize of output 13 [2024-11-13 12:50:30,497 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 16 treesize of output 12 [2024-11-13 12:50:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 100 proven. 154 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:50:31,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841633109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:50:31,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:50:31,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 29] total 84 [2024-11-13 12:50:31,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732263420] [2024-11-13 12:50:31,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:50:31,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-13 12:50:31,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-13 12:50:31,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=6492, Unknown=0, NotChecked=0, Total=6972 [2024-11-13 12:50:31,913 INFO L87 Difference]: Start difference. First operand 567 states and 625 transitions. Second operand has 84 states, 84 states have (on average 2.9285714285714284) internal successors, (246), 84 states have internal predecessors, (246), 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) [2024-11-13 12:50:36,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:36,571 INFO L93 Difference]: Finished difference Result 628 states and 682 transitions. [2024-11-13 12:50:36,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-13 12:50:36,571 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.9285714285714284) internal successors, (246), 84 states have internal predecessors, (246), 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 89 [2024-11-13 12:50:36,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:36,572 INFO L225 Difference]: With dead ends: 628 [2024-11-13 12:50:36,572 INFO L226 Difference]: Without dead ends: 594 [2024-11-13 12:50:36,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4452 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1452, Invalid=16104, Unknown=0, NotChecked=0, Total=17556 [2024-11-13 12:50:36,573 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 272 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 3254 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:36,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 697 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3254 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 12:50:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-13 12:50:36,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 561. [2024-11-13 12:50:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 560 states have (on average 1.1017857142857144) internal successors, (617), 560 states have internal predecessors, (617), 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) [2024-11-13 12:50:36,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 617 transitions. [2024-11-13 12:50:36,581 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 617 transitions. Word has length 89 [2024-11-13 12:50:36,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:36,581 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 617 transitions. [2024-11-13 12:50:36,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.9285714285714284) internal successors, (246), 84 states have internal predecessors, (246), 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) [2024-11-13 12:50:36,581 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 617 transitions. [2024-11-13 12:50:36,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 12:50:36,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:36,583 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:50:36,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-13 12:50:36,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:36,783 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:50:36,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:36,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2080533672, now seen corresponding path program 22 times [2024-11-13 12:50:36,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:36,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384367339] [2024-11-13 12:50:36,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:36,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 24 proven. 156 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 12:50:39,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:39,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384367339] [2024-11-13 12:50:39,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384367339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:50:39,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184381232] [2024-11-13 12:50:39,519 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:50:39,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:39,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:50:39,521 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:50:39,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-13 12:50:40,238 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:50:40,239 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:50:40,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-13 12:50:40,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:50:41,226 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 [2024-11-13 12:50:43,765 INFO L349 Elim1Store]: treesize reduction 17, result has 48.5 percent of original size [2024-11-13 12:50:43,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 34 [2024-11-13 12:50:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 43 proven. 133 refuted. 4 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 12:50:43,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:50:43,957 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 [2024-11-13 12:50:43,962 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:50:43,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 45 [2024-11-13 12:50:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 63 proven. 117 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 12:50:45,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184381232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:50:45,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:50:45,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 73 [2024-11-13 12:50:45,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725309320] [2024-11-13 12:50:45,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:50:45,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-13 12:50:45,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:45,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-13 12:50:45,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=4581, Unknown=5, NotChecked=0, Total=5256 [2024-11-13 12:50:45,083 INFO L87 Difference]: Start difference. First operand 561 states and 617 transitions. Second operand has 73 states, 73 states have (on average 2.4383561643835616) internal successors, (178), 73 states have internal predecessors, (178), 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) [2024-11-13 12:50:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:50,996 INFO L93 Difference]: Finished difference Result 587 states and 645 transitions. [2024-11-13 12:50:50,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 12:50:50,996 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.4383561643835616) internal successors, (178), 73 states have internal predecessors, (178), 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 90 [2024-11-13 12:50:50,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:50,998 INFO L225 Difference]: With dead ends: 587 [2024-11-13 12:50:50,998 INFO L226 Difference]: Without dead ends: 575 [2024-11-13 12:50:50,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 134 SyntacticMatches, 3 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 4558 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=1990, Invalid=11339, Unknown=11, NotChecked=0, Total=13340 [2024-11-13 12:50:50,999 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 181 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:50,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 176 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 12:50:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-13 12:50:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 559. [2024-11-13 12:50:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 1.1021505376344085) internal successors, (615), 558 states have internal predecessors, (615), 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) [2024-11-13 12:50:51,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 615 transitions. [2024-11-13 12:50:51,004 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 615 transitions. Word has length 90 [2024-11-13 12:50:51,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:51,005 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 615 transitions. [2024-11-13 12:50:51,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.4383561643835616) internal successors, (178), 73 states have internal predecessors, (178), 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) [2024-11-13 12:50:51,005 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 615 transitions. [2024-11-13 12:50:51,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 12:50:51,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:51,006 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:50:51,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-13 12:50:51,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:51,207 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:50:51,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1815737263, now seen corresponding path program 23 times [2024-11-13 12:50:51,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:51,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662441168] [2024-11-13 12:50:51,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:51,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 85 proven. 71 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-13 12:50:52,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662441168] [2024-11-13 12:50:52,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662441168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:50:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193919168] [2024-11-13 12:50:52,258 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 12:50:52,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:52,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:50:52,260 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:50:52,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 12:50:53,659 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-13 12:50:53,660 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:50:53,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-13 12:50:53,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:50:53,933 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 13 treesize of output 9 [2024-11-13 12:50:54,340 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 9 treesize of output 3 [2024-11-13 12:50:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 21 proven. 135 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-13 12:50:54,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:50:54,491 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 15 treesize of output 13 [2024-11-13 12:50:54,493 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 16 treesize of output 12 [2024-11-13 12:50:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 21 proven. 135 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-13 12:50:54,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193919168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:50:54,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:50:54,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 44 [2024-11-13 12:50:54,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684520774] [2024-11-13 12:50:54,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:50:54,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 12:50:54,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:54,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 12:50:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1772, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 12:50:54,656 INFO L87 Difference]: Start difference. First operand 559 states and 615 transitions. Second operand has 44 states, 44 states have (on average 3.090909090909091) internal successors, (136), 44 states have internal predecessors, (136), 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) [2024-11-13 12:50:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:56,506 INFO L93 Difference]: Finished difference Result 1016 states and 1094 transitions. [2024-11-13 12:50:56,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 12:50:56,506 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.090909090909091) internal successors, (136), 44 states have internal predecessors, (136), 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 92 [2024-11-13 12:50:56,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:56,508 INFO L225 Difference]: With dead ends: 1016 [2024-11-13 12:50:56,508 INFO L226 Difference]: Without dead ends: 736 [2024-11-13 12:50:56,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=312, Invalid=4244, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 12:50:56,509 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:56,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 664 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 12:50:56,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-13 12:50:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 667. [2024-11-13 12:50:56,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 666 states have (on average 1.0975975975975976) internal successors, (731), 666 states have internal predecessors, (731), 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) [2024-11-13 12:50:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 731 transitions. [2024-11-13 12:50:56,517 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 731 transitions. Word has length 92 [2024-11-13 12:50:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:56,518 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 731 transitions. [2024-11-13 12:50:56,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.090909090909091) internal successors, (136), 44 states have internal predecessors, (136), 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) [2024-11-13 12:50:56,518 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 731 transitions. [2024-11-13 12:50:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 12:50:56,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:56,520 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:50:56,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-13 12:50:56,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:56,721 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:50:56,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1463110281, now seen corresponding path program 24 times [2024-11-13 12:50:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:56,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287646776] [2024-11-13 12:50:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:56,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 39 proven. 127 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-13 12:50:57,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:57,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287646776] [2024-11-13 12:50:57,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287646776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:50:57,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243292999] [2024-11-13 12:50:57,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 12:50:57,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:57,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:50:57,626 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:50:57,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-13 12:50:59,919 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-13 12:50:59,919 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:50:59,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-13 12:50:59,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:51:00,769 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 11 treesize of output 7 [2024-11-13 12:51:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 55 proven. 111 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-13 12:51:00,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:51:00,817 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 13 treesize of output 11 [2024-11-13 12:51:00,819 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 14 treesize of output 12 [2024-11-13 12:51:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 74 proven. 92 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-13 12:51:01,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243292999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:51:01,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:51:01,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 60 [2024-11-13 12:51:01,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568282953] [2024-11-13 12:51:01,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:51:01,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-13 12:51:01,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:51:01,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-13 12:51:01,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=2910, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 12:51:01,519 INFO L87 Difference]: Start difference. First operand 667 states and 731 transitions. Second operand has 60 states, 60 states have (on average 2.8333333333333335) internal successors, (170), 60 states have internal predecessors, (170), 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) [2024-11-13 12:51:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:51:03,038 INFO L93 Difference]: Finished difference Result 674 states and 738 transitions. [2024-11-13 12:51:03,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-13 12:51:03,038 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.8333333333333335) internal successors, (170), 60 states have internal predecessors, (170), 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 95 [2024-11-13 12:51:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:51:03,041 INFO L225 Difference]: With dead ends: 674 [2024-11-13 12:51:03,041 INFO L226 Difference]: Without dead ends: 674 [2024-11-13 12:51:03,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2858 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2137, Invalid=7565, Unknown=0, NotChecked=0, Total=9702 [2024-11-13 12:51:03,042 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 279 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 12:51:03,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 186 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 12:51:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-13 12:51:03,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 663. [2024-11-13 12:51:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.0981873111782476) internal successors, (727), 662 states have internal predecessors, (727), 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) [2024-11-13 12:51:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 727 transitions. [2024-11-13 12:51:03,050 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 727 transitions. Word has length 95 [2024-11-13 12:51:03,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:51:03,050 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 727 transitions. [2024-11-13 12:51:03,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.8333333333333335) internal successors, (170), 60 states have internal predecessors, (170), 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) [2024-11-13 12:51:03,051 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 727 transitions. [2024-11-13 12:51:03,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 12:51:03,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:51:03,052 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:51:03,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-13 12:51:03,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:51:03,253 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:51:03,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:51:03,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1453131243, now seen corresponding path program 25 times [2024-11-13 12:51:03,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:51:03,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360696528] [2024-11-13 12:51:03,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:51:03,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:51:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 32 proven. 188 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 12:51:06,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:51:06,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360696528] [2024-11-13 12:51:06,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360696528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:51:06,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145764565] [2024-11-13 12:51:06,911 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 12:51:06,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:51:06,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:51:06,913 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:51:06,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-13 12:51:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:07,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-13 12:51:07,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:51:08,455 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 [2024-11-13 12:51:15,444 INFO L349 Elim1Store]: treesize reduction 21, result has 48.8 percent of original size [2024-11-13 12:51:15,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 42 [2024-11-13 12:51:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 48 proven. 162 refuted. 10 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 12:51:15,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:51:15,774 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 [2024-11-13 12:51:15,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:51:15,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 74 treesize of output 56 [2024-11-13 12:51:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 75 proven. 145 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 12:51:17,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145764565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:51:17,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:51:17,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 81 [2024-11-13 12:51:17,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605246560] [2024-11-13 12:51:17,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:51:17,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-13 12:51:17,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:51:17,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-13 12:51:17,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=774, Invalid=5693, Unknown=13, NotChecked=0, Total=6480 [2024-11-13 12:51:17,411 INFO L87 Difference]: Start difference. First operand 663 states and 727 transitions. Second operand has 81 states, 81 states have (on average 2.3580246913580245) internal successors, (191), 81 states have internal predecessors, (191), 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) [2024-11-13 12:51:27,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:51:27,781 INFO L93 Difference]: Finished difference Result 705 states and 771 transitions. [2024-11-13 12:51:27,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-13 12:51:27,782 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.3580246913580245) internal successors, (191), 81 states have internal predecessors, (191), 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 95 [2024-11-13 12:51:27,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:51:27,783 INFO L225 Difference]: With dead ends: 705 [2024-11-13 12:51:27,783 INFO L226 Difference]: Without dead ends: 677 [2024-11-13 12:51:27,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 5725 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=2346, Invalid=15183, Unknown=27, NotChecked=0, Total=17556 [2024-11-13 12:51:27,784 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 181 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:51:27,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 288 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 12:51:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-13 12:51:27,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 657. [2024-11-13 12:51:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 1.0975609756097562) internal successors, (720), 656 states have internal predecessors, (720), 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) [2024-11-13 12:51:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 720 transitions. [2024-11-13 12:51:27,790 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 720 transitions. Word has length 95 [2024-11-13 12:51:27,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:51:27,790 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 720 transitions. [2024-11-13 12:51:27,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.3580246913580245) internal successors, (191), 81 states have internal predecessors, (191), 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) [2024-11-13 12:51:27,791 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 720 transitions. [2024-11-13 12:51:27,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 12:51:27,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:51:27,793 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 10, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:51:27,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-13 12:51:27,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:51:27,994 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:51:27,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:51:27,994 INFO L85 PathProgramCache]: Analyzing trace with hash 144550495, now seen corresponding path program 26 times [2024-11-13 12:51:27,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:51:27,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131254004] [2024-11-13 12:51:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:51:27,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:51:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:35,557 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 87 proven. 264 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:51:35,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:51:35,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131254004] [2024-11-13 12:51:35,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131254004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:51:35,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634330092] [2024-11-13 12:51:35,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:51:35,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:51:35,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:51:35,559 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:51:35,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-13 12:51:35,938 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:51:35,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:51:35,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-13 12:51:35,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:51:37,753 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 [2024-11-13 12:52:23,429 INFO L349 Elim1Store]: treesize reduction 37, result has 49.3 percent of original size [2024-11-13 12:52:23,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 98 treesize of output 74 [2024-11-13 12:52:23,433 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-13 12:52:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 56 proven. 225 refuted. 49 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 12:52:23,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:52:27,307 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 134 treesize of output 116 [2024-11-13 12:52:27,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:52:27,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 134 treesize of output 100 [2024-11-13 12:52:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 120 proven. 210 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 12:52:29,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634330092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:52:29,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:52:29,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 40, 40] total 122 [2024-11-13 12:52:29,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795937954] [2024-11-13 12:52:29,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:52:29,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-11-13 12:52:29,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:52:29,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-11-13 12:52:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1199, Invalid=13491, Unknown=72, NotChecked=0, Total=14762 [2024-11-13 12:52:29,581 INFO L87 Difference]: Start difference. First operand 657 states and 720 transitions. Second operand has 122 states, 122 states have (on average 1.9754098360655739) internal successors, (241), 122 states have internal predecessors, (241), 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) [2024-11-13 12:53:44,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:53:44,731 INFO L93 Difference]: Finished difference Result 822 states and 901 transitions. [2024-11-13 12:53:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-13 12:53:44,731 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 1.9754098360655739) internal successors, (241), 122 states have internal predecessors, (241), 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 95 [2024-11-13 12:53:44,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:53:44,733 INFO L225 Difference]: With dead ends: 822 [2024-11-13 12:53:44,733 INFO L226 Difference]: Without dead ends: 800 [2024-11-13 12:53:44,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 13268 ImplicationChecksByTransitivity, 126.9s TimeCoverageRelationStatistics Valid=3298, Invalid=33593, Unknown=165, NotChecked=0, Total=37056 [2024-11-13 12:53:44,734 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 273 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 3306 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:53:44,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 482 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3306 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-13 12:53:44,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-13 12:53:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 729. [2024-11-13 12:53:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.1043956043956045) internal successors, (804), 728 states have internal predecessors, (804), 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) [2024-11-13 12:53:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 804 transitions. [2024-11-13 12:53:44,744 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 804 transitions. Word has length 95 [2024-11-13 12:53:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:53:44,745 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 804 transitions. [2024-11-13 12:53:44,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 1.9754098360655739) internal successors, (241), 122 states have internal predecessors, (241), 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) [2024-11-13 12:53:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 804 transitions. [2024-11-13 12:53:44,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-13 12:53:44,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:53:44,747 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 10, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:53:44,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-13 12:53:44,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:53:44,948 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 12:53:44,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:53:44,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1049300341, now seen corresponding path program 27 times [2024-11-13 12:53:44,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:53:44,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152361671] [2024-11-13 12:53:44,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:53:44,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:53:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:53:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 176 proven. 202 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 12:53:46,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:53:46,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152361671] [2024-11-13 12:53:46,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152361671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:53:46,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011674837] [2024-11-13 12:53:46,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:53:46,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:53:46,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:53:46,637 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:53:46,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6447da5d-dcab-49e4-8afa-491f2ac2c26a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-13 12:53:48,104 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-13 12:53:48,104 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:53:48,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 184 conjuncts are in the unsatisfiable core [2024-11-13 12:53:48,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:53:49,096 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 13 treesize of output 9 [2024-11-13 12:53:54,286 INFO L349 Elim1Store]: treesize reduction 36, result has 91.1 percent of original size [2024-11-13 12:53:54,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 6 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 49 case distinctions, treesize of input 89 treesize of output 411 [2024-11-13 12:54:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 25 proven. 143 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-13 12:54:04,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:54:27,596 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 137 treesize of output 117 [2024-11-13 12:54:28,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 12:54:28,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 39 case distinctions, treesize of input 185 treesize of output 507 [2024-11-13 12:54:30,527 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 53 treesize of output 45 [2024-11-13 12:54:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-13 12:54:34,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011674837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:54:34,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:54:34,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 38, 41] total 110 [2024-11-13 12:54:34,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930903080] [2024-11-13 12:54:34,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:54:34,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-11-13 12:54:34,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:54:34,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-11-13 12:54:34,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1049, Invalid=11159, Unknown=2, NotChecked=0, Total=12210 [2024-11-13 12:54:34,098 INFO L87 Difference]: Start difference. First operand 729 states and 804 transitions. Second operand has 111 states, 110 states have (on average 1.990909090909091) internal successors, (219), 111 states have internal predecessors, (219), 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) [2024-11-13 12:55:02,072 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#length| |c_ULTIMATE.start_cstrcat_~s~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_cstrcat_~s~0#1.offset| 1)) (.cse3 (select |c_#memory_int#0| |c_ULTIMATE.start_cstrcat_~s~0#1.base|)) (.cse9 (+ 2 |c_ULTIMATE.start_cstrcat_~s~0#1.offset|))) (let ((.cse4 (+ 3 |c_ULTIMATE.start_cstrcat_~s~0#1.offset|)) (.cse6 (= (select .cse3 .cse9) 0)) (.cse5 (= 0 (select .cse3 .cse1))) (.cse8 (<= (+ 5 |c_ULTIMATE.start_cstrcat_~s~0#1.offset|) .cse2)) (.cse0 (= |c_ULTIMATE.start_cstrcat_#t~mem2#1| 0)) (.cse7 (+ |c_ULTIMATE.start_cstrcat_~s~0#1.offset| 4))) (and (or .cse0 (forall ((|v_ULTIMATE.start_cstrcat_~s~0#1.offset_415| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_417| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_416| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_419| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_418| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_420| Int)) (or (< .cse1 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_420|) (< (+ 4 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|) .cse2) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|) 0) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_419| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_418|) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_420| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_419|) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_417|) 0) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_416|) 0) (< (+ 3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|) 0) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_419|) 0) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_420|) 0) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_417| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_416|) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_418| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_417|) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_418|) 0) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_416| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|)))) (or .cse0 (forall ((|v_ULTIMATE.start_cstrcat_~s~0#1.offset_415| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_417| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_416| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_419| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_418| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_420| Int)) (or (< (+ 4 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|) .cse2) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|) 0) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_419| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_418|) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_420| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_419|) (< .cse4 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_420|) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_417|) 0) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_416|) 0) (< (+ 3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|) 0) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_419|) 0) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_420|) 0) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_417| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_416|) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_418| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_417|) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_418|) 0) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_416| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|))) .cse5 .cse6) (exists ((|v_ULTIMATE.start_cstrcat_~s~0#1.offset_402| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_401| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_404| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_403| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_405| Int)) (and (<= |v_ULTIMATE.start_cstrcat_~s~0#1.offset_402| (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_401| 1)) (<= |v_ULTIMATE.start_cstrcat_~s~0#1.offset_401| 4) (not (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_405|) 0)) (not (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_403|) 0)) (not (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_404|) 0)) (<= |v_ULTIMATE.start_cstrcat_~s~0#1.offset_405| (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_404| 1)) (<= |c_ULTIMATE.start_cstrcat_~s~0#1.offset| (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_405| 1)) (not (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_402|) 0)) (not (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_401|) 0)) (<= |v_ULTIMATE.start_cstrcat_~s~0#1.offset_403| (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_402| 1)) (<= |v_ULTIMATE.start_cstrcat_~s~0#1.offset_404| (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_403| 1)))) (= 0 |c_ULTIMATE.start_cstrcat_~s2#1.offset|) (or .cse0 (= (select .cse3 .cse4) 0) (forall ((|v_ULTIMATE.start_cstrcat_~s~0#1.offset_415| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_417| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_416| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_419| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_418| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_420| Int)) (or (< (+ 4 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|) .cse2) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|) 0) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_419| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_418|) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_420| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_419|) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_417|) 0) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_416|) 0) (< (+ 3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|) 0) (< .cse7 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_420|) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_419|) 0) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_420|) 0) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_417| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_416|) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_418| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_417|) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_418|) 0) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_416| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|))) .cse5 .cse6) (not (= (select .cse3 0) 0)) (exists ((|v_ULTIMATE.start_main_~length3~0#1_46| Int)) (and (<= 1 |v_ULTIMATE.start_main_~length3~0#1_46|) (= (select .cse3 (+ (- 1) |v_ULTIMATE.start_main_~length3~0#1_46|)) 0) (<= (+ 3 |v_ULTIMATE.start_main_~length3~0#1_46|) .cse2))) (not (= (select .cse3 1) 0)) .cse8 (or .cse0 .cse5 (forall ((|v_ULTIMATE.start_cstrcat_~s~0#1.offset_415| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_417| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_416| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_419| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_418| Int) (|v_ULTIMATE.start_cstrcat_~s~0#1.offset_420| Int)) (or (< (+ 4 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|) .cse2) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|) 0) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_419| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_418|) (< .cse9 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_420|) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_420| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_419|) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_417|) 0) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_416|) 0) (< (+ 3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|) 0) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_419|) 0) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_420|) 0) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_417| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_416|) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_418| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_417|) (= (select .cse3 |v_ULTIMATE.start_cstrcat_~s~0#1.offset_418|) 0) (< (+ |v_ULTIMATE.start_cstrcat_~s~0#1.offset_416| 1) |v_ULTIMATE.start_cstrcat_~s~0#1.offset_415|)))) (not (= (select .cse3 3) 0)) (not (= (select .cse3 2) 0)) (let ((.cse10 (<= 8 .cse2)) (.cse11 (not (= |c_ULTIMATE.start_cstrcat_~s~0#1.offset| 1))) (.cse12 (<= |c_ULTIMATE.start_cstrcat_~s~0#1.offset| 9)) (.cse13 (not (= |c_ULTIMATE.start_cstrcat_~s~0#1.offset| 0))) (.cse14 (not (= 3 |c_ULTIMATE.start_cstrcat_~s~0#1.offset|))) (.cse15 (not (= 2 |c_ULTIMATE.start_cstrcat_~s~0#1.offset|)))) (or (and .cse10 .cse11 .cse12 .cse8 .cse13 .cse14 .cse15) (and .cse10 (not .cse0) .cse8 (<= |c_ULTIMATE.start_cstrcat_~s~0#1.offset| 6)) (and .cse10 .cse0 .cse11 .cse12 (<= .cse7 .cse2) .cse13 .cse14 .cse15))) (<= 9 |c_ULTIMATE.start_cstrcat_~s~0#1.offset|)))) is different from false [2024-11-13 12:55:12,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:55:16,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:55:35,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:55:40,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:55:43,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:55:47,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:55:51,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:55:56,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:56:00,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:56:03,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:56:17,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:56:21,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:56:26,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:56:30,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:56:57,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:57:02,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:57:05,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:57:09,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:57:13,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:57:17,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:57:22,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:57:23,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:57:28,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:57:45,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:57:50,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:57:54,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:57:58,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:58:02,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 12:58:05,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]