./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-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_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/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_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/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_2c0d2732-62f7-4844-aeb4-5d470fa932c1/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 e0283c4a072a13e5b82b0728b718582152e385c6ee1404b3ed9be4e37b84a0b2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:18:54,184 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:18:54,269 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 16:18:54,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:18:54,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:18:54,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:18:54,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:18:54,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:18:54,300 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:18:54,301 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:18:54,301 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:18:54,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:18:54,301 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:18:54,301 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:18:54,301 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:18:54,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:18:54,302 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:18:54,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:18:54,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:18:54,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:18:54,302 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:18:54,302 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:18:54,302 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:18:54,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:18:54,303 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:18:54,303 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:18:54,303 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:18:54,303 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:18:54,303 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:18:54,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:18:54,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:18:54,303 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:18:54,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:18:54,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:18:54,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:18:54,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:18:54,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:18:54,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:18:54,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:18:54,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:18:54,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:18:54,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:18:54,305 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_2c0d2732-62f7-4844-aeb4-5d470fa932c1/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 -> e0283c4a072a13e5b82b0728b718582152e385c6ee1404b3ed9be4e37b84a0b2 [2024-11-13 16:18:54,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:18:54,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:18:54,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:18:54,612 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:18:54,613 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:18:54,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i Unable to find full path for "g++" [2024-11-13 16:18:56,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:18:56,786 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:18:56,786 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i [2024-11-13 16:18:56,802 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/data/387b8d02b/85f43499c4a743688c2c8592b2adad84/FLAGa797a0a84 [2024-11-13 16:18:57,042 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/data/387b8d02b/85f43499c4a743688c2c8592b2adad84 [2024-11-13 16:18:57,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:18:57,046 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:18:57,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:18:57,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:18:57,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:18:57,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d77ef4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57, skipping insertion in model container [2024-11-13 16:18:57,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,080 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:18:57,360 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 16:18:57,361 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 16:18:57,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:18:57,384 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:18:57,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:18:57,458 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:18:57,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57 WrapperNode [2024-11-13 16:18:57,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:18:57,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:18:57,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:18:57,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:18:57,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,477 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,502 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2024-11-13 16:18:57,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:18:57,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:18:57,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:18:57,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:18:57,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,515 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,538 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [4, 5]. 56 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2024-11-13 16:18:57,539 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,554 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:18:57,564 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:18:57,564 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:18:57,564 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:18:57,565 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (1/1) ... [2024-11-13 16:18:57,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:18:57,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:57,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:18:57,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:18:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:18:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:18:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:18:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:18:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 16:18:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:18:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:18:57,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:18:57,755 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:18:57,757 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:18:58,047 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2024-11-13 16:18:58,047 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:18:58,063 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:18:58,063 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 16:18:58,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:18:58 BoogieIcfgContainer [2024-11-13 16:18:58,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:18:58,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:18:58,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:18:58,073 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:18:58,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:18:57" (1/3) ... [2024-11-13 16:18:58,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65622e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:18:58, skipping insertion in model container [2024-11-13 16:18:58,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:57" (2/3) ... [2024-11-13 16:18:58,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65622e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:18:58, skipping insertion in model container [2024-11-13 16:18:58,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:18:58" (3/3) ... [2024-11-13 16:18:58,077 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncmp-alloca-2.i [2024-11-13 16:18:58,094 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:18:58,097 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG openbsd_cstrncmp-alloca-2.i that has 1 procedures, 52 locations, 1 initial locations, 3 loop locations, and 19 error locations. [2024-11-13 16:18:58,152 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:18:58,167 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;@38b96e1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:18:58,168 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-13 16:18:58,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 32 states have (on average 1.9375) internal successors, (62), 51 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 16:18:58,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 16:18:58,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:58,180 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:58,181 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:18:58,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:58,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2024-11-13 16:18:58,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:58,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007433415] [2024-11-13 16:18:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:58,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:58,517 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 16:18:58,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:58,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007433415] [2024-11-13 16:18:58,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007433415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:18:58,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:18:58,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:18:58,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306390899] [2024-11-13 16:18:58,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:18:58,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:18:58,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:58,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:18:58,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:18:58,580 INFO L87 Difference]: Start difference. First operand has 52 states, 32 states have (on average 1.9375) internal successors, (62), 51 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) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 16:18:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:58,635 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2024-11-13 16:18:58,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:18:58,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 16:18:58,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:58,647 INFO L225 Difference]: With dead ends: 64 [2024-11-13 16:18:58,647 INFO L226 Difference]: Without dead ends: 62 [2024-11-13 16:18:58,649 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 16:18:58,653 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 11 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:58,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 115 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:18:58,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-13 16:18:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 53. [2024-11-13 16:18:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 52 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 16:18:58,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2024-11-13 16:18:58,694 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 7 [2024-11-13 16:18:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:58,694 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2024-11-13 16:18:58,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 16:18:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-11-13 16:18:58,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 16:18:58,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:58,695 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:58,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:18:58,696 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:18:58,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:58,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2024-11-13 16:18:58,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:58,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395222253] [2024-11-13 16:18:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:58,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:58,885 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 16:18:58,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:58,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395222253] [2024-11-13 16:18:58,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395222253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:18:58,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:18:58,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:18:58,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747672038] [2024-11-13 16:18:58,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:18:58,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:18:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:58,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:18:58,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:18:58,892 INFO L87 Difference]: Start difference. First operand 53 states and 61 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 16:18:58,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:58,969 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2024-11-13 16:18:58,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:18:58,969 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 16:18:58,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:58,970 INFO L225 Difference]: With dead ends: 51 [2024-11-13 16:18:58,972 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 16:18:58,972 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 16:18:58,973 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 15 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:58,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 67 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:18:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 16:18:58,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-13 16:18:58,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 50 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 16:18:58,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2024-11-13 16:18:58,983 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 7 [2024-11-13 16:18:58,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:58,983 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2024-11-13 16:18:58,983 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 16:18:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2024-11-13 16:18:58,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 16:18:58,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:58,984 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:58,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:18:58,985 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:18:58,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:58,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2024-11-13 16:18:58,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:58,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497938708] [2024-11-13 16:18:58,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:58,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:59,384 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 16:18:59,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:59,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497938708] [2024-11-13 16:18:59,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497938708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:18:59,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:18:59,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:18:59,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148752095] [2024-11-13 16:18:59,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:18:59,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:18:59,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:59,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:18:59,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:18:59,386 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 5 states, 4 states have (on average 1.75) 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 16:18:59,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:59,543 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2024-11-13 16:18:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:18:59,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) 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 16:18:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:59,544 INFO L225 Difference]: With dead ends: 54 [2024-11-13 16:18:59,544 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 16:18:59,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:18:59,545 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 21 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 115 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 16:18:59,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 115 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:18:59,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 16:18:59,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-11-13 16:18:59,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 52 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 16:18:59,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-11-13 16:18:59,552 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 7 [2024-11-13 16:18:59,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:59,555 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-11-13 16:18:59,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) 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 16:18:59,555 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-11-13 16:18:59,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 16:18:59,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:59,556 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:59,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:18:59,557 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:18:59,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:59,561 INFO L85 PathProgramCache]: Analyzing trace with hash -533878894, now seen corresponding path program 1 times [2024-11-13 16:18:59,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:59,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027484680] [2024-11-13 16:18:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:59,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:59,642 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 16:18:59,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:59,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027484680] [2024-11-13 16:18:59,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027484680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:18:59,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:18:59,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:18:59,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155554645] [2024-11-13 16:18:59,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:18:59,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:18:59,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:59,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:18:59,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:18:59,644 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:18:59,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:59,681 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2024-11-13 16:18:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:18:59,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 16:18:59,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:59,685 INFO L225 Difference]: With dead ends: 69 [2024-11-13 16:18:59,685 INFO L226 Difference]: Without dead ends: 69 [2024-11-13 16:18:59,685 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 16:18:59,686 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 9 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:59,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 106 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:18:59,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-13 16:18:59,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2024-11-13 16:18:59,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 62 states have internal predecessors, (75), 0 states have call successors, (0), 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 16:18:59,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2024-11-13 16:18:59,694 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 9 [2024-11-13 16:18:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:59,697 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2024-11-13 16:18:59,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:18:59,697 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2024-11-13 16:18:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 16:18:59,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:59,697 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:59,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:18:59,698 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:18:59,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:59,698 INFO L85 PathProgramCache]: Analyzing trace with hash -476620592, now seen corresponding path program 1 times [2024-11-13 16:18:59,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:59,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500538149] [2024-11-13 16:18:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:59,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:59,762 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 16:18:59,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500538149] [2024-11-13 16:18:59,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500538149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:18:59,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:18:59,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:18:59,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111843779] [2024-11-13 16:18:59,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:18:59,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:18:59,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:18:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:18:59,764 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:18:59,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:59,868 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2024-11-13 16:18:59,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:18:59,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 16:18:59,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:59,870 INFO L225 Difference]: With dead ends: 61 [2024-11-13 16:18:59,870 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 16:18:59,871 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 16:18:59,874 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 11 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:59,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 67 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:18:59,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 16:18:59,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-13 16:18:59,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 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 16:18:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2024-11-13 16:18:59,887 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 9 [2024-11-13 16:18:59,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:59,888 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2024-11-13 16:18:59,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:18:59,888 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2024-11-13 16:18:59,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 16:18:59,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:59,889 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:59,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:18:59,890 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:18:59,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:59,890 INFO L85 PathProgramCache]: Analyzing trace with hash -476620591, now seen corresponding path program 1 times [2024-11-13 16:18:59,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:59,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087812680] [2024-11-13 16:18:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:59,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:00,167 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 16:19:00,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:00,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087812680] [2024-11-13 16:19:00,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087812680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:00,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:00,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:19:00,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564049246] [2024-11-13 16:19:00,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:00,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:19:00,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:00,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:19:00,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:19:00,171 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:00,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:00,296 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2024-11-13 16:19:00,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:19:00,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 16:19:00,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:00,300 INFO L225 Difference]: With dead ends: 64 [2024-11-13 16:19:00,300 INFO L226 Difference]: Without dead ends: 64 [2024-11-13 16:19:00,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:19:00,301 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 35 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:00,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 100 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:00,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-13 16:19:00,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-11-13 16:19:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 62 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 16:19:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-13 16:19:00,306 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 9 [2024-11-13 16:19:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:00,306 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-13 16:19:00,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-13 16:19:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 16:19:00,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:00,307 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:00,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:19:00,307 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:00,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:00,308 INFO L85 PathProgramCache]: Analyzing trace with hash 629621784, now seen corresponding path program 1 times [2024-11-13 16:19:00,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:00,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763714719] [2024-11-13 16:19:00,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:00,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:00,477 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 16:19:00,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:00,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763714719] [2024-11-13 16:19:00,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763714719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:00,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:00,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:19:00,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141385467] [2024-11-13 16:19:00,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:00,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:19:00,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:00,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:19:00,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:19:00,478 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 16:19:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:00,541 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2024-11-13 16:19:00,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:19:00,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 16:19:00,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:00,542 INFO L225 Difference]: With dead ends: 74 [2024-11-13 16:19:00,542 INFO L226 Difference]: Without dead ends: 74 [2024-11-13 16:19:00,543 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 16:19:00,544 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 5 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:00,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 121 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:00,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-13 16:19:00,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2024-11-13 16:19:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 72 states have internal predecessors, (89), 0 states have call successors, (0), 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 16:19:00,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2024-11-13 16:19:00,555 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 10 [2024-11-13 16:19:00,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:00,555 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2024-11-13 16:19:00,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 16:19:00,559 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2024-11-13 16:19:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 16:19:00,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:00,559 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:00,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 16:19:00,560 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:00,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:00,560 INFO L85 PathProgramCache]: Analyzing trace with hash -179724842, now seen corresponding path program 1 times [2024-11-13 16:19:00,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:00,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085699815] [2024-11-13 16:19:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:00,831 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 16:19:00,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:00,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085699815] [2024-11-13 16:19:00,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085699815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:00,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:00,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:19:00,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030847958] [2024-11-13 16:19:00,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:00,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:19:00,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:19:00,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:19:00,833 INFO L87 Difference]: Start difference. First operand 73 states and 89 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 16:19:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:00,918 INFO L93 Difference]: Finished difference Result 86 states and 104 transitions. [2024-11-13 16:19:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:19:00,919 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 16:19:00,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:00,919 INFO L225 Difference]: With dead ends: 86 [2024-11-13 16:19:00,920 INFO L226 Difference]: Without dead ends: 86 [2024-11-13 16:19:00,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:19:00,920 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 24 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:00,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 103 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:00,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-13 16:19:00,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 73. [2024-11-13 16:19:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 72 states have internal predecessors, (89), 0 states have call successors, (0), 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 16:19:00,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2024-11-13 16:19:00,928 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 10 [2024-11-13 16:19:00,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:00,929 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2024-11-13 16:19:00,929 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 16:19:00,929 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2024-11-13 16:19:00,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 16:19:00,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:00,929 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:00,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 16:19:00,932 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:00,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:00,933 INFO L85 PathProgramCache]: Analyzing trace with hash -178096715, now seen corresponding path program 1 times [2024-11-13 16:19:00,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:00,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444690094] [2024-11-13 16:19:00,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:00,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:01,287 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 16:19:01,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:01,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444690094] [2024-11-13 16:19:01,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444690094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:01,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945259140] [2024-11-13 16:19:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:01,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:01,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:01,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:01,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:19:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:01,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 16:19:01,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:01,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:19:01,481 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 16:19:01,493 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 10 treesize of output 8 [2024-11-13 16:19:01,763 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 16:19:01,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:02,007 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:19:02,099 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 16:19:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945259140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:02,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:02,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-13 16:19:02,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598730918] [2024-11-13 16:19:02,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:02,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 16:19:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:02,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 16:19:02,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:19:02,103 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:02,418 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2024-11-13 16:19:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:19:02,419 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-13 16:19:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:02,420 INFO L225 Difference]: With dead ends: 76 [2024-11-13 16:19:02,421 INFO L226 Difference]: Without dead ends: 76 [2024-11-13 16:19:02,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:19:02,422 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 16 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:02,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 272 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:02,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-13 16:19:02,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2024-11-13 16:19:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 56 states have (on average 1.5178571428571428) internal successors, (85), 69 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 16:19:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2024-11-13 16:19:02,430 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 10 [2024-11-13 16:19:02,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:02,431 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2024-11-13 16:19:02,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2024-11-13 16:19:02,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 16:19:02,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:02,434 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:02,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:19:02,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:02,636 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:02,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1956561185, now seen corresponding path program 1 times [2024-11-13 16:19:02,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:02,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516612004] [2024-11-13 16:19:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:02,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:02,777 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 16:19:02,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:02,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516612004] [2024-11-13 16:19:02,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516612004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:02,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:02,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:19:02,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377689785] [2024-11-13 16:19:02,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:02,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:19:02,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:02,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:19:02,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:19:02,779 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:19:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:02,840 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2024-11-13 16:19:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:19:02,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:19:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:02,841 INFO L225 Difference]: With dead ends: 76 [2024-11-13 16:19:02,841 INFO L226 Difference]: Without dead ends: 76 [2024-11-13 16:19:02,842 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 16:19:02,842 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 4 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:02,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 118 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-13 16:19:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-11-13 16:19:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 74 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 16:19:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2024-11-13 16:19:02,846 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 11 [2024-11-13 16:19:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:02,846 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2024-11-13 16:19:02,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:19:02,847 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2024-11-13 16:19:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 16:19:02,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:02,847 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:02,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 16:19:02,848 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:02,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1529059485, now seen corresponding path program 1 times [2024-11-13 16:19:02,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:02,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074394133] [2024-11-13 16:19:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:02,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:03,055 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 16:19:03,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:03,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074394133] [2024-11-13 16:19:03,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074394133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:03,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:03,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:19:03,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798619675] [2024-11-13 16:19:03,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:03,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:19:03,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:03,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:19:03,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:19:03,058 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:19:03,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:03,149 INFO L93 Difference]: Finished difference Result 83 states and 99 transitions. [2024-11-13 16:19:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:19:03,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:19:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:03,150 INFO L225 Difference]: With dead ends: 83 [2024-11-13 16:19:03,150 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 16:19:03,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:19:03,152 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:03,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 126 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:03,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 16:19:03,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2024-11-13 16:19:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 74 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 16:19:03,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2024-11-13 16:19:03,159 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 11 [2024-11-13 16:19:03,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:03,159 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2024-11-13 16:19:03,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:19:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2024-11-13 16:19:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 16:19:03,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:03,160 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:03,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 16:19:03,160 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:03,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:03,161 INFO L85 PathProgramCache]: Analyzing trace with hash 157837087, now seen corresponding path program 1 times [2024-11-13 16:19:03,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:03,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136890130] [2024-11-13 16:19:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:03,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:03,409 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 16:19:03,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:03,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136890130] [2024-11-13 16:19:03,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136890130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:03,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219451602] [2024-11-13 16:19:03,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:03,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:03,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:03,414 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:03,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:19:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:03,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:19:03,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:03,519 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 16:19:03,530 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 16:19:03,749 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 16:19:03,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:04,029 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 16:19:04,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219451602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:04,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:04,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-13 16:19:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057971889] [2024-11-13 16:19:04,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:04,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 16:19:04,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:04,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 16:19:04,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:19:04,032 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 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 16:19:04,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:04,331 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2024-11-13 16:19:04,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:19:04,331 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 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 12 [2024-11-13 16:19:04,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:04,332 INFO L225 Difference]: With dead ends: 78 [2024-11-13 16:19:04,332 INFO L226 Difference]: Without dead ends: 78 [2024-11-13 16:19:04,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:19:04,333 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 39 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:04,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 182 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:04,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-13 16:19:04,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2024-11-13 16:19:04,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 71 states have internal predecessors, (87), 0 states have call successors, (0), 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 16:19:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2024-11-13 16:19:04,337 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 12 [2024-11-13 16:19:04,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:04,337 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2024-11-13 16:19:04,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 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 16:19:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2024-11-13 16:19:04,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 16:19:04,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:04,338 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:04,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:19:04,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:04,539 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:04,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:04,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1396287028, now seen corresponding path program 1 times [2024-11-13 16:19:04,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:04,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604071113] [2024-11-13 16:19:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:04,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:04,794 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 16:19:04,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:04,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604071113] [2024-11-13 16:19:04,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604071113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:04,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:04,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:19:04,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985685795] [2024-11-13 16:19:04,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:04,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:19:04,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:04,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:19:04,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:19:04,796 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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 16:19:04,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:04,829 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2024-11-13 16:19:04,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:19:04,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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 16:19:04,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:04,830 INFO L225 Difference]: With dead ends: 71 [2024-11-13 16:19:04,831 INFO L226 Difference]: Without dead ends: 71 [2024-11-13 16:19:04,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:19:04,832 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:04,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 82 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:19:04,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-13 16:19:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2024-11-13 16:19:04,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 57 states have internal predecessors, (68), 0 states have call successors, (0), 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 16:19:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-11-13 16:19:04,835 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 13 [2024-11-13 16:19:04,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:04,835 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-11-13 16:19:04,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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 16:19:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-11-13 16:19:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 16:19:04,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:04,836 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:04,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 16:19:04,837 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:04,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:04,837 INFO L85 PathProgramCache]: Analyzing trace with hash -913094114, now seen corresponding path program 1 times [2024-11-13 16:19:04,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:04,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632330088] [2024-11-13 16:19:04,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:04,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:04,892 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 16:19:04,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:04,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632330088] [2024-11-13 16:19:04,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632330088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:04,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:04,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:19:04,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963440394] [2024-11-13 16:19:04,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:04,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:19:04,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:04,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:19:04,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:19:04,895 INFO L87 Difference]: Start difference. First operand 58 states and 68 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 16:19:04,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:04,945 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2024-11-13 16:19:04,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:19:04,945 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 16:19:04,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:04,946 INFO L225 Difference]: With dead ends: 57 [2024-11-13 16:19:04,946 INFO L226 Difference]: Without dead ends: 57 [2024-11-13 16:19:04,946 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 16:19:04,947 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:04,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 67 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:19:04,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-13 16:19:04,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2024-11-13 16:19:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.434782608695652) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 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 16:19:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-11-13 16:19:04,949 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 14 [2024-11-13 16:19:04,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:04,950 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-11-13 16:19:04,950 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 16:19:04,950 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-11-13 16:19:04,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 16:19:04,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:04,950 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:04,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 16:19:04,951 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:04,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:04,951 INFO L85 PathProgramCache]: Analyzing trace with hash -913094113, now seen corresponding path program 1 times [2024-11-13 16:19:04,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:04,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544538451] [2024-11-13 16:19:04,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:04,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:05,063 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 16:19:05,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:05,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544538451] [2024-11-13 16:19:05,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544538451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:05,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:05,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:19:05,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644759727] [2024-11-13 16:19:05,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:05,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:19:05,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:05,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:19:05,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:19:05,066 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 16:19:05,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:05,172 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2024-11-13 16:19:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:19:05,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 16:19:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:05,173 INFO L225 Difference]: With dead ends: 79 [2024-11-13 16:19:05,173 INFO L226 Difference]: Without dead ends: 79 [2024-11-13 16:19:05,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:19:05,175 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:05,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 144 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:05,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-13 16:19:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 61. [2024-11-13 16:19:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 60 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 16:19:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2024-11-13 16:19:05,178 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 14 [2024-11-13 16:19:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:05,178 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2024-11-13 16:19:05,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 16:19:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2024-11-13 16:19:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 16:19:05,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:05,179 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:05,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 16:19:05,179 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:05,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:05,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1357532011, now seen corresponding path program 1 times [2024-11-13 16:19:05,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:05,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649522528] [2024-11-13 16:19:05,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:05,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:05,421 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 16:19:05,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:05,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649522528] [2024-11-13 16:19:05,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649522528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:05,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:05,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:19:05,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215413223] [2024-11-13 16:19:05,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:05,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:19:05,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:05,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:19:05,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:19:05,423 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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 16:19:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:05,479 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2024-11-13 16:19:05,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:19:05,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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 16:19:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:05,480 INFO L225 Difference]: With dead ends: 60 [2024-11-13 16:19:05,480 INFO L226 Difference]: Without dead ends: 60 [2024-11-13 16:19:05,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:19:05,480 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:05,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 100 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:19:05,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-13 16:19:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2024-11-13 16:19:05,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.446808510638298) internal successors, (68), 55 states have internal predecessors, (68), 0 states have call successors, (0), 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 16:19:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2024-11-13 16:19:05,483 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 14 [2024-11-13 16:19:05,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:05,483 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2024-11-13 16:19:05,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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 16:19:05,483 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2024-11-13 16:19:05,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 16:19:05,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:05,484 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:05,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 16:19:05,484 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:05,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1758852866, now seen corresponding path program 1 times [2024-11-13 16:19:05,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:05,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373817649] [2024-11-13 16:19:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:05,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:05,668 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 16:19:05,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:05,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373817649] [2024-11-13 16:19:05,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373817649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:05,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:05,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:19:05,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002952270] [2024-11-13 16:19:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:05,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:19:05,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:05,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:19:05,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:19:05,670 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 16:19:05,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:05,703 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2024-11-13 16:19:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:19:05,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 16:19:05,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:05,704 INFO L225 Difference]: With dead ends: 55 [2024-11-13 16:19:05,704 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 16:19:05,704 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 16:19:05,705 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 32 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:05,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 62 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:19:05,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 16:19:05,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-13 16:19:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 50 states have internal predecessors, (60), 0 states have call successors, (0), 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 16:19:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2024-11-13 16:19:05,707 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 15 [2024-11-13 16:19:05,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:05,707 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2024-11-13 16:19:05,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 16:19:05,708 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2024-11-13 16:19:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 16:19:05,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:05,711 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:05,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 16:19:05,711 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:05,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1310114017, now seen corresponding path program 1 times [2024-11-13 16:19:05,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:05,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503867396] [2024-11-13 16:19:05,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:05,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:05,774 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 16:19:05,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:05,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503867396] [2024-11-13 16:19:05,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503867396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:05,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:05,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:19:05,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262289576] [2024-11-13 16:19:05,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:05,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:19:05,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:05,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:19:05,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:19:05,776 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:05,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:05,833 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2024-11-13 16:19:05,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:19:05,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-13 16:19:05,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:05,834 INFO L225 Difference]: With dead ends: 50 [2024-11-13 16:19:05,834 INFO L226 Difference]: Without dead ends: 50 [2024-11-13 16:19:05,834 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 16:19:05,835 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:05,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 70 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:19:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-13 16:19:05,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-13 16:19:05,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2024-11-13 16:19:05,837 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 16 [2024-11-13 16:19:05,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:05,840 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2024-11-13 16:19:05,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:05,840 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2024-11-13 16:19:05,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 16:19:05,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:05,841 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:05,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 16:19:05,841 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:05,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:05,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1310114016, now seen corresponding path program 1 times [2024-11-13 16:19:05,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:05,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266786555] [2024-11-13 16:19:05,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:05,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:06,045 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 16:19:06,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:06,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266786555] [2024-11-13 16:19:06,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266786555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:06,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:06,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:19:06,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762519611] [2024-11-13 16:19:06,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:06,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:19:06,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:06,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:19:06,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:19:06,049 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:06,162 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-13 16:19:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:19:06,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-13 16:19:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:06,163 INFO L225 Difference]: With dead ends: 55 [2024-11-13 16:19:06,163 INFO L226 Difference]: Without dead ends: 55 [2024-11-13 16:19:06,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:19:06,164 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:06,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 102 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:06,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-13 16:19:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2024-11-13 16:19:06,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 49 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 16:19:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-11-13 16:19:06,167 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 16 [2024-11-13 16:19:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:06,167 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-11-13 16:19:06,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-11-13 16:19:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 16:19:06,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:06,168 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:06,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 16:19:06,168 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:06,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:06,169 INFO L85 PathProgramCache]: Analyzing trace with hash -594150944, now seen corresponding path program 1 times [2024-11-13 16:19:06,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:06,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75975569] [2024-11-13 16:19:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:06,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:06,261 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 16:19:06,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:06,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75975569] [2024-11-13 16:19:06,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75975569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:06,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:06,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:19:06,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552304093] [2024-11-13 16:19:06,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:06,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:19:06,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:06,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:19:06,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:19:06,263 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:06,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:06,320 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2024-11-13 16:19:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:19:06,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-13 16:19:06,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:06,321 INFO L225 Difference]: With dead ends: 49 [2024-11-13 16:19:06,321 INFO L226 Difference]: Without dead ends: 49 [2024-11-13 16:19:06,321 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 16:19:06,322 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:06,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 69 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:19:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-13 16:19:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-13 16:19:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.302325581395349) internal successors, (56), 48 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 16:19:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-11-13 16:19:06,330 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 18 [2024-11-13 16:19:06,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:06,330 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-11-13 16:19:06,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-11-13 16:19:06,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 16:19:06,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:06,331 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:06,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 16:19:06,331 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:06,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:06,331 INFO L85 PathProgramCache]: Analyzing trace with hash -594150943, now seen corresponding path program 1 times [2024-11-13 16:19:06,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:06,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589863710] [2024-11-13 16:19:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:06,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:06,512 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 16:19:06,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:06,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589863710] [2024-11-13 16:19:06,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589863710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:06,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:06,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:19:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644436953] [2024-11-13 16:19:06,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:06,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:19:06,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:19:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:19:06,514 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:06,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:06,611 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-11-13 16:19:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:19:06,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-13 16:19:06,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:06,612 INFO L225 Difference]: With dead ends: 62 [2024-11-13 16:19:06,612 INFO L226 Difference]: Without dead ends: 62 [2024-11-13 16:19:06,612 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 16:19:06,613 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:06,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 108 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:06,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-13 16:19:06,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2024-11-13 16:19:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 49 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 16:19:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-11-13 16:19:06,616 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 18 [2024-11-13 16:19:06,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:06,616 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-11-13 16:19:06,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:06,616 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-11-13 16:19:06,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 16:19:06,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:06,617 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 16:19:06,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 16:19:06,617 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:06,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:06,618 INFO L85 PathProgramCache]: Analyzing trace with hash 251287137, now seen corresponding path program 1 times [2024-11-13 16:19:06,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:06,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96867850] [2024-11-13 16:19:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:06,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:06,705 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 16:19:06,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:06,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96867850] [2024-11-13 16:19:06,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96867850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:06,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:06,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:19:06,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708384621] [2024-11-13 16:19:06,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:06,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:19:06,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:06,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:19:06,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:19:06,707 INFO L87 Difference]: Start difference. First operand 50 states and 57 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 16:19:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:06,748 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2024-11-13 16:19:06,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:19:06,751 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 16:19:06,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:06,752 INFO L225 Difference]: With dead ends: 49 [2024-11-13 16:19:06,752 INFO L226 Difference]: Without dead ends: 49 [2024-11-13 16:19:06,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:19:06,753 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:06,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 70 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:19:06,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-13 16:19:06,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-13 16:19:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 48 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 16:19:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-11-13 16:19:06,757 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 20 [2024-11-13 16:19:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:06,758 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-11-13 16:19:06,758 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 16:19:06,758 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-11-13 16:19:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 16:19:06,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:06,759 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 16:19:06,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 16:19:06,760 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:06,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:06,760 INFO L85 PathProgramCache]: Analyzing trace with hash 251287138, now seen corresponding path program 1 times [2024-11-13 16:19:06,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:06,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707688183] [2024-11-13 16:19:06,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:06,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:07,008 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 16:19:07,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:07,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707688183] [2024-11-13 16:19:07,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707688183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:07,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:07,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:19:07,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442510686] [2024-11-13 16:19:07,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:07,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:19:07,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:07,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:19:07,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:19:07,010 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 16:19:07,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:07,149 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2024-11-13 16:19:07,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:19:07,150 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 16:19:07,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:07,150 INFO L225 Difference]: With dead ends: 61 [2024-11-13 16:19:07,150 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 16:19:07,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:19:07,151 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:07,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 120 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:07,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 16:19:07,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2024-11-13 16:19:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.255813953488372) internal successors, (54), 47 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 16:19:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-11-13 16:19:07,155 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 20 [2024-11-13 16:19:07,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:07,155 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-11-13 16:19:07,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 16:19:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-11-13 16:19:07,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 16:19:07,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:07,156 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 16:19:07,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-13 16:19:07,156 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:07,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:07,157 INFO L85 PathProgramCache]: Analyzing trace with hash -790486179, now seen corresponding path program 1 times [2024-11-13 16:19:07,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:07,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369006274] [2024-11-13 16:19:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:07,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:07,418 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 16:19:07,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:07,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369006274] [2024-11-13 16:19:07,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369006274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:07,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:07,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:19:07,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469312832] [2024-11-13 16:19:07,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:07,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:19:07,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:07,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:19:07,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:19:07,420 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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 16:19:07,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:07,486 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2024-11-13 16:19:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:19:07,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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 16:19:07,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:07,487 INFO L225 Difference]: With dead ends: 65 [2024-11-13 16:19:07,487 INFO L226 Difference]: Without dead ends: 43 [2024-11-13 16:19:07,487 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 16:19:07,487 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:07,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 182 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:07,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-13 16:19:07,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-13 16:19:07,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.236842105263158) internal successors, (47), 42 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 16:19:07,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-11-13 16:19:07,490 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 21 [2024-11-13 16:19:07,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:07,490 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-11-13 16:19:07,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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 16:19:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-11-13 16:19:07,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 16:19:07,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:07,491 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 16:19:07,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 16:19:07,491 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:07,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:07,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1815537375, now seen corresponding path program 1 times [2024-11-13 16:19:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:07,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071081385] [2024-11-13 16:19:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:07,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:07,759 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 16:19:07,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:07,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071081385] [2024-11-13 16:19:07,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071081385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:07,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:07,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:19:07,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268324430] [2024-11-13 16:19:07,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:07,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:19:07,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:07,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:19:07,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:19:07,761 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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 16:19:07,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:07,843 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2024-11-13 16:19:07,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:19:07,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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 16:19:07,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:07,844 INFO L225 Difference]: With dead ends: 66 [2024-11-13 16:19:07,844 INFO L226 Difference]: Without dead ends: 49 [2024-11-13 16:19:07,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:19:07,846 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:07,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 176 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:07,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-13 16:19:07,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-11-13 16:19:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.225) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:07,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-11-13 16:19:07,849 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 21 [2024-11-13 16:19:07,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:07,849 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-11-13 16:19:07,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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 16:19:07,850 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-11-13 16:19:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 16:19:07,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:07,850 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] [2024-11-13 16:19:07,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 16:19:07,850 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:07,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1749273303, now seen corresponding path program 1 times [2024-11-13 16:19:07,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:07,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935331238] [2024-11-13 16:19:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:07,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:08,081 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 16:19:08,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:08,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935331238] [2024-11-13 16:19:08,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935331238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:08,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106431607] [2024-11-13 16:19:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:08,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:08,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:08,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:08,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:19:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:08,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 16:19:08,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:08,334 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 16:19:08,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:08,481 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 16:19:08,517 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 16:19:08,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106431607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:08,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:08,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-13 16:19:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739611372] [2024-11-13 16:19:08,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:08,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 16:19:08,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:08,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 16:19:08,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:19:08,520 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 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 16:19:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:08,732 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2024-11-13 16:19:08,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:19:08,733 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 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) Word has length 24 [2024-11-13 16:19:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:08,733 INFO L225 Difference]: With dead ends: 56 [2024-11-13 16:19:08,733 INFO L226 Difference]: Without dead ends: 56 [2024-11-13 16:19:08,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:19:08,734 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:08,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 183 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:08,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-13 16:19:08,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2024-11-13 16:19:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.186046511627907) internal successors, (51), 46 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 16:19:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-11-13 16:19:08,737 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 24 [2024-11-13 16:19:08,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:08,737 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-11-13 16:19:08,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 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 16:19:08,738 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-11-13 16:19:08,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 16:19:08,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:08,738 INFO L215 NwaCegarLoop]: trace histogram [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 16:19:08,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 16:19:08,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:08,939 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:08,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:08,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1719431254, now seen corresponding path program 1 times [2024-11-13 16:19:08,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:08,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102146896] [2024-11-13 16:19:08,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:08,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:09,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:09,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102146896] [2024-11-13 16:19:09,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102146896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:09,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:09,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 16:19:09,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028444337] [2024-11-13 16:19:09,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:09,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:19:09,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:09,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:19:09,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:19:09,333 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:09,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:09,435 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2024-11-13 16:19:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:19:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-13 16:19:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:09,437 INFO L225 Difference]: With dead ends: 58 [2024-11-13 16:19:09,437 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 16:19:09,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:19:09,438 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:09,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 182 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:09,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 16:19:09,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-13 16:19:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2024-11-13 16:19:09,440 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 26 [2024-11-13 16:19:09,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:09,440 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2024-11-13 16:19:09,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2024-11-13 16:19:09,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 16:19:09,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:09,441 INFO L215 NwaCegarLoop]: trace histogram [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 16:19:09,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-13 16:19:09,441 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:09,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:09,442 INFO L85 PathProgramCache]: Analyzing trace with hash 770097708, now seen corresponding path program 1 times [2024-11-13 16:19:09,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:09,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185755900] [2024-11-13 16:19:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:09,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:10,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185755900] [2024-11-13 16:19:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185755900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:10,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013356981] [2024-11-13 16:19:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:10,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:10,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:10,173 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:10,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:19:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:10,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 16:19:10,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:10,363 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 16:19:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:10,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:19:10,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013356981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:10,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:19:10,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2024-11-13 16:19:10,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989108081] [2024-11-13 16:19:10,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:10,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:19:10,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:19:10,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:19:10,576 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:10,695 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-11-13 16:19:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:19:10,695 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-13 16:19:10,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:10,696 INFO L225 Difference]: With dead ends: 54 [2024-11-13 16:19:10,696 INFO L226 Difference]: Without dead ends: 43 [2024-11-13 16:19:10,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:19:10,697 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:10,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 185 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:10,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-13 16:19:10,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-11-13 16:19:10,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 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 16:19:10,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2024-11-13 16:19:10,699 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 26 [2024-11-13 16:19:10,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:10,699 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2024-11-13 16:19:10,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:10,699 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2024-11-13 16:19:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 16:19:10,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:10,700 INFO L215 NwaCegarLoop]: trace histogram [2, 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 16:19:10,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:19:10,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 16:19:10,904 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:10,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:10,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1273365286, now seen corresponding path program 1 times [2024-11-13 16:19:10,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:10,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500039412] [2024-11-13 16:19:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:10,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:11,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:11,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500039412] [2024-11-13 16:19:11,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500039412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:11,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182064625] [2024-11-13 16:19:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:11,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:11,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:11,226 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:11,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:19:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:11,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 16:19:11,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:11,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:11,660 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 16:19:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:11,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182064625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:11,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:11,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2024-11-13 16:19:11,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664391600] [2024-11-13 16:19:11,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:11,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 16:19:11,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:11,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 16:19:11,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:19:11,701 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 21 states, 20 states have (on average 3.0) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 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 16:19:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:11,934 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-11-13 16:19:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:19:11,934 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 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 16:19:11,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:11,935 INFO L225 Difference]: With dead ends: 45 [2024-11-13 16:19:11,935 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 16:19:11,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:19:11,936 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:11,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 180 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:11,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 16:19:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-11-13 16:19:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 42 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 16:19:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2024-11-13 16:19:11,939 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 29 [2024-11-13 16:19:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:11,939 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2024-11-13 16:19:11,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 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 16:19:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2024-11-13 16:19:11,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 16:19:11,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:11,940 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, 1] [2024-11-13 16:19:11,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:19:12,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 16:19:12,141 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:12,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash 361640219, now seen corresponding path program 1 times [2024-11-13 16:19:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:12,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77586219] [2024-11-13 16:19:12,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:12,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:12,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:12,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77586219] [2024-11-13 16:19:12,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77586219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:12,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878054258] [2024-11-13 16:19:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:12,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:12,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:12,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:12,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:19:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:12,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 16:19:12,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:12,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:12,896 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 16:19:12,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:12,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878054258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:12,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:12,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-13 16:19:12,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742315653] [2024-11-13 16:19:12,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:12,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 16:19:12,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 16:19:12,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:19:12,935 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 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 16:19:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:13,137 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2024-11-13 16:19:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:19:13,137 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 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 16:19:13,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:13,138 INFO L225 Difference]: With dead ends: 47 [2024-11-13 16:19:13,138 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 16:19:13,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:19:13,139 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:13,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 163 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:13,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 16:19:13,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2024-11-13 16:19:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-11-13 16:19:13,141 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 31 [2024-11-13 16:19:13,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:13,141 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-11-13 16:19:13,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 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 16:19:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-11-13 16:19:13,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 16:19:13,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:13,142 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-13 16:19:13,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 16:19:13,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:13,343 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:13,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:13,343 INFO L85 PathProgramCache]: Analyzing trace with hash -356407524, now seen corresponding path program 1 times [2024-11-13 16:19:13,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:13,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856337731] [2024-11-13 16:19:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:13,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:13,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:13,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856337731] [2024-11-13 16:19:13,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856337731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:13,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735937056] [2024-11-13 16:19:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:13,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:13,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:13,767 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:13,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:19:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:13,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 16:19:13,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:14,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:14,265 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 16:19:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:14,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735937056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:14,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:14,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2024-11-13 16:19:14,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478479036] [2024-11-13 16:19:14,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:14,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:19:14,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:14,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:19:14,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:19:14,306 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 23 states, 22 states have (on average 3.090909090909091) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 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 16:19:14,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:14,547 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-11-13 16:19:14,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:19:14,547 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.090909090909091) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 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 16:19:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:14,548 INFO L225 Difference]: With dead ends: 54 [2024-11-13 16:19:14,548 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 16:19:14,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2024-11-13 16:19:14,548 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:14,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 172 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:14,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 16:19:14,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2024-11-13 16:19:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.125) internal successors, (45), 42 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 16:19:14,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2024-11-13 16:19:14,551 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 33 [2024-11-13 16:19:14,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:14,551 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2024-11-13 16:19:14,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.090909090909091) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 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 16:19:14,551 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2024-11-13 16:19:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 16:19:14,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:14,552 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-11-13 16:19:14,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:19:14,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:14,754 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:14,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:14,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1845815779, now seen corresponding path program 1 times [2024-11-13 16:19:14,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:14,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361003696] [2024-11-13 16:19:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:14,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:15,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:15,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361003696] [2024-11-13 16:19:15,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361003696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:15,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650823750] [2024-11-13 16:19:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:15,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:15,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:15,163 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:15,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:19:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:15,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 16:19:15,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:15,361 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 16:19:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:15,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:15,493 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 16:19:15,496 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 16:19:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:15,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650823750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:15,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:15,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2024-11-13 16:19:15,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321257597] [2024-11-13 16:19:15,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:15,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 16:19:15,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:15,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 16:19:15,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:19:15,571 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 16:19:15,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:15,784 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2024-11-13 16:19:15,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:19:15,784 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 16:19:15,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:15,785 INFO L225 Difference]: With dead ends: 71 [2024-11-13 16:19:15,785 INFO L226 Difference]: Without dead ends: 48 [2024-11-13 16:19:15,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-11-13 16:19:15,786 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:15,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 375 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:15,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-13 16:19:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2024-11-13 16:19:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2024-11-13 16:19:15,793 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 34 [2024-11-13 16:19:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:15,793 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2024-11-13 16:19:15,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 16:19:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2024-11-13 16:19:15,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 16:19:15,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:15,794 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:15,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:19:15,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:15,996 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:15,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:15,996 INFO L85 PathProgramCache]: Analyzing trace with hash 278436757, now seen corresponding path program 2 times [2024-11-13 16:19:15,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:15,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331265544] [2024-11-13 16:19:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:15,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:16,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:16,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331265544] [2024-11-13 16:19:16,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331265544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:16,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095425949] [2024-11-13 16:19:16,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:19:16,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:16,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:16,312 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:16,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:19:16,455 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:19:16,455 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:16,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 16:19:16,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:16,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:16,861 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 16:19:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:16,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095425949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:16,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:16,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-13 16:19:16,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816224293] [2024-11-13 16:19:16,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:16,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 16:19:16,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 16:19:16,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:19:16,922 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 21 states, 20 states have (on average 3.95) internal successors, (79), 21 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 16:19:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:17,213 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2024-11-13 16:19:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:19:17,213 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.95) internal successors, (79), 21 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) Word has length 37 [2024-11-13 16:19:17,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:17,214 INFO L225 Difference]: With dead ends: 55 [2024-11-13 16:19:17,214 INFO L226 Difference]: Without dead ends: 55 [2024-11-13 16:19:17,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:19:17,214 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:17,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 266 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:17,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-13 16:19:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2024-11-13 16:19:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 49 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 16:19:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2024-11-13 16:19:17,217 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 37 [2024-11-13 16:19:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:17,217 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2024-11-13 16:19:17,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.95) internal successors, (79), 21 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 16:19:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2024-11-13 16:19:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:19:17,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:17,218 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:17,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 16:19:17,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 16:19:17,422 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:17,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:17,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1289751318, now seen corresponding path program 2 times [2024-11-13 16:19:17,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:17,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694733421] [2024-11-13 16:19:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:17,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:19:18,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:18,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694733421] [2024-11-13 16:19:18,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694733421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:18,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321394515] [2024-11-13 16:19:18,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:19:18,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:18,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:18,348 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:18,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:19:18,494 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:19:18,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:18,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 16:19:18,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:18,615 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 16:19:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:19:18,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:18,956 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 20 treesize of output 12 [2024-11-13 16:19:18,981 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 16:19:18,984 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 16 treesize of output 12 [2024-11-13 16:19:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:19:19,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321394515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:19,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:19,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 34 [2024-11-13 16:19:19,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414544258] [2024-11-13 16:19:19,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:19,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 16:19:19,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:19,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 16:19:19,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 16:19:19,079 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 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 16:19:19,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:19,531 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2024-11-13 16:19:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:19:19,532 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 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 39 [2024-11-13 16:19:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:19,532 INFO L225 Difference]: With dead ends: 73 [2024-11-13 16:19:19,532 INFO L226 Difference]: Without dead ends: 55 [2024-11-13 16:19:19,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=1336, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 16:19:19,534 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:19,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 310 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:19:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-13 16:19:19,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-11-13 16:19:19,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 50 states have (on average 1.1) internal successors, (55), 52 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 16:19:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2024-11-13 16:19:19,536 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 39 [2024-11-13 16:19:19,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:19,537 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2024-11-13 16:19:19,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 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 16:19:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2024-11-13 16:19:19,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 16:19:19,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:19,537 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:19,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 16:19:19,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 16:19:19,738 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:19,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:19,739 INFO L85 PathProgramCache]: Analyzing trace with hash -509098848, now seen corresponding path program 3 times [2024-11-13 16:19:19,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:19,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710131687] [2024-11-13 16:19:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:19,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:19:20,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:20,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710131687] [2024-11-13 16:19:20,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710131687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:20,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90150970] [2024-11-13 16:19:20,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:19:20,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:20,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:20,155 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:20,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:19:20,387 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 16:19:20,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:20,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 16:19:20,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:19:20,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:20,908 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 16:19:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:19:20,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90150970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:20,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:20,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2024-11-13 16:19:20,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316545143] [2024-11-13 16:19:20,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:20,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 16:19:20,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:20,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 16:19:20,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2024-11-13 16:19:20,966 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 27 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 16:19:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:21,324 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2024-11-13 16:19:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:19:21,324 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 27 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 42 [2024-11-13 16:19:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:21,325 INFO L225 Difference]: With dead ends: 55 [2024-11-13 16:19:21,325 INFO L226 Difference]: Without dead ends: 55 [2024-11-13 16:19:21,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2024-11-13 16:19:21,326 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:21,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 290 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:19:21,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-13 16:19:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-13 16:19:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 54 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 16:19:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2024-11-13 16:19:21,329 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 42 [2024-11-13 16:19:21,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:21,329 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2024-11-13 16:19:21,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 27 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 16:19:21,329 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2024-11-13 16:19:21,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 16:19:21,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:21,330 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:21,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 16:19:21,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 16:19:21,534 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:21,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:21,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1996874782, now seen corresponding path program 2 times [2024-11-13 16:19:21,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:21,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239261287] [2024-11-13 16:19:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:21,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:19:22,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:22,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239261287] [2024-11-13 16:19:22,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239261287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:22,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121215129] [2024-11-13 16:19:22,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:19:22,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:22,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:22,023 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:22,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 16:19:22,140 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 16:19:22,140 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:22,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 16:19:22,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 16:19:22,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:19:22,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121215129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:22,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:19:22,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-11-13 16:19:22,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206584179] [2024-11-13 16:19:22,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:22,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:19:22,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:22,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:19:22,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:19:22,236 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:22,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:22,284 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-11-13 16:19:22,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:19:22,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-13 16:19:22,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:22,285 INFO L225 Difference]: With dead ends: 54 [2024-11-13 16:19:22,286 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 16:19:22,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:19:22,286 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:22,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:19:22,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 16:19:22,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-13 16:19:22,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 50 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 16:19:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-13 16:19:22,289 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 46 [2024-11-13 16:19:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:22,289 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-13 16:19:22,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-13 16:19:22,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 16:19:22,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:22,290 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:22,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 16:19:22,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 16:19:22,494 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:22,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:22,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1764028963, now seen corresponding path program 3 times [2024-11-13 16:19:22,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:22,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195688514] [2024-11-13 16:19:22,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:22,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:23,002 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:19:23,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:23,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195688514] [2024-11-13 16:19:23,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195688514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:23,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540609435] [2024-11-13 16:19:23,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:19:23,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:23,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:23,006 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:23,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:19:23,163 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 16:19:23,164 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:23,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-13 16:19:23,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:23,356 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 16:19:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:19:23,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:23,908 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 20 treesize of output 12 [2024-11-13 16:19:24,080 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 16:19:24,082 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 16:19:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:19:24,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540609435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:24,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:24,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 16] total 42 [2024-11-13 16:19:24,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488971547] [2024-11-13 16:19:24,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:24,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 16:19:24,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:24,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 16:19:24,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1599, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 16:19:24,303 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 42 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 42 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 16:19:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:25,644 INFO L93 Difference]: Finished difference Result 146 states and 151 transitions. [2024-11-13 16:19:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-13 16:19:25,645 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 42 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) Word has length 47 [2024-11-13 16:19:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:25,645 INFO L225 Difference]: With dead ends: 146 [2024-11-13 16:19:25,645 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 16:19:25,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=283, Invalid=3749, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 16:19:25,647 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:25,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 340 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:19:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 16:19:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-11-13 16:19:25,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 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 16:19:25,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2024-11-13 16:19:25,651 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 47 [2024-11-13 16:19:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:25,651 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2024-11-13 16:19:25,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 42 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 16:19:25,652 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2024-11-13 16:19:25,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 16:19:25,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:25,652 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:25,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 16:19:25,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 16:19:25,853 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:25,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:25,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2062265113, now seen corresponding path program 4 times [2024-11-13 16:19:25,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:25,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612534256] [2024-11-13 16:19:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:25,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:26,274 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:26,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:26,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612534256] [2024-11-13 16:19:26,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612534256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:26,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564342799] [2024-11-13 16:19:26,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:19:26,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:26,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:26,277 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:26,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 16:19:26,455 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:19:26,455 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:26,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 16:19:26,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:26,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:27,032 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 21 treesize of output 17 [2024-11-13 16:19:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:27,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564342799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:27,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:27,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2024-11-13 16:19:27,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505719050] [2024-11-13 16:19:27,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:27,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 16:19:27,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 16:19:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2024-11-13 16:19:27,230 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 27 states, 26 states have (on average 4.461538461538462) internal successors, (116), 27 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 16:19:27,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:27,578 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2024-11-13 16:19:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:19:27,579 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.461538461538462) internal successors, (116), 27 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 53 [2024-11-13 16:19:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:27,580 INFO L225 Difference]: With dead ends: 66 [2024-11-13 16:19:27,580 INFO L226 Difference]: Without dead ends: 66 [2024-11-13 16:19:27,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2024-11-13 16:19:27,581 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:27,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 277 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:19:27,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-13 16:19:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2024-11-13 16:19:27,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 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 16:19:27,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2024-11-13 16:19:27,588 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 53 [2024-11-13 16:19:27,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:27,588 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2024-11-13 16:19:27,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.461538461538462) internal successors, (116), 27 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 16:19:27,589 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2024-11-13 16:19:27,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 16:19:27,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:27,589 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:27,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 16:19:27,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 16:19:27,793 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:27,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:27,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1856850330, now seen corresponding path program 4 times [2024-11-13 16:19:27,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:27,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146078385] [2024-11-13 16:19:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:27,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:28,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:28,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146078385] [2024-11-13 16:19:28,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146078385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:28,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278813306] [2024-11-13 16:19:28,397 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:19:28,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:28,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:28,402 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:28,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 16:19:28,602 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:19:28,602 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:28,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-13 16:19:28,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:28,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-13 16:19:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:28,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:29,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278813306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:29,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:29,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2024-11-13 16:19:29,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564472822] [2024-11-13 16:19:29,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:29,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 16:19:29,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 16:19:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2024-11-13 16:19:29,578 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 32 states, 31 states have (on average 3.806451612903226) internal successors, (118), 32 states have internal predecessors, (118), 0 states have call successors, (0), 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 16:19:30,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:30,024 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2024-11-13 16:19:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:19:30,025 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.806451612903226) internal successors, (118), 32 states have internal predecessors, (118), 0 states have call successors, (0), 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 55 [2024-11-13 16:19:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:30,025 INFO L225 Difference]: With dead ends: 64 [2024-11-13 16:19:30,026 INFO L226 Difference]: Without dead ends: 64 [2024-11-13 16:19:30,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 16:19:30,027 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:30,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 247 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:19:30,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-13 16:19:30,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-13 16:19:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.064516129032258) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 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 16:19:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2024-11-13 16:19:30,029 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 55 [2024-11-13 16:19:30,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:30,030 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2024-11-13 16:19:30,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.806451612903226) internal successors, (118), 32 states have internal predecessors, (118), 0 states have call successors, (0), 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 16:19:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2024-11-13 16:19:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 16:19:30,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:30,030 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:30,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 16:19:30,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 16:19:30,231 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:30,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:30,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1329829155, now seen corresponding path program 5 times [2024-11-13 16:19:30,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:30,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29510190] [2024-11-13 16:19:30,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:30,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 51 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:30,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29510190] [2024-11-13 16:19:30,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29510190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366336532] [2024-11-13 16:19:30,861 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:19:30,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:30,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:30,863 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:30,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 16:19:31,074 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-13 16:19:31,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:31,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 16:19:31,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:31,218 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 16:19:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 51 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:31,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:31,578 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 16:19:31,580 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 16:19:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 51 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:31,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366336532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:31,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:31,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 31 [2024-11-13 16:19:31,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632930574] [2024-11-13 16:19:31,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:31,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 16:19:31,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:31,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 16:19:31,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2024-11-13 16:19:31,796 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 31 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 16:19:32,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:32,172 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2024-11-13 16:19:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 16:19:32,173 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 31 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) Word has length 60 [2024-11-13 16:19:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:32,173 INFO L225 Difference]: With dead ends: 112 [2024-11-13 16:19:32,173 INFO L226 Difference]: Without dead ends: 69 [2024-11-13 16:19:32,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 16:19:32,174 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 9 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:32,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 451 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:19:32,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-13 16:19:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2024-11-13 16:19:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 66 states have internal predecessors, (69), 0 states have call successors, (0), 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 16:19:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2024-11-13 16:19:32,180 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 60 [2024-11-13 16:19:32,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:32,181 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2024-11-13 16:19:32,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 31 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 16:19:32,181 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2024-11-13 16:19:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 16:19:32,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:32,182 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:32,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 16:19:32,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 16:19:32,382 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:32,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:32,383 INFO L85 PathProgramCache]: Analyzing trace with hash -150361003, now seen corresponding path program 6 times [2024-11-13 16:19:32,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:32,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834200495] [2024-11-13 16:19:32,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:32,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 5 proven. 63 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 16:19:32,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:32,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834200495] [2024-11-13 16:19:32,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834200495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:32,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652542522] [2024-11-13 16:19:32,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:19:32,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:32,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:32,862 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:32,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 16:19:33,337 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-13 16:19:33,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:33,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-13 16:19:33,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:33,745 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 16:19:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 7 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:19:34,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:34,531 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 20 treesize of output 12 [2024-11-13 16:19:34,767 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 16:19:34,769 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 16:19:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 7 proven. 51 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 16:19:34,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652542522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:34,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:34,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 25, 18] total 51 [2024-11-13 16:19:34,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113357825] [2024-11-13 16:19:35,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:35,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-13 16:19:35,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:35,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-13 16:19:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2405, Unknown=0, NotChecked=0, Total=2550 [2024-11-13 16:19:35,002 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 51 states, 51 states have (on average 3.196078431372549) internal successors, (163), 51 states have internal predecessors, (163), 0 states have call successors, (0), 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 16:19:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:36,899 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2024-11-13 16:19:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 16:19:36,900 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.196078431372549) internal successors, (163), 51 states have internal predecessors, (163), 0 states have call successors, (0), 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 16:19:36,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:36,900 INFO L225 Difference]: With dead ends: 113 [2024-11-13 16:19:36,900 INFO L226 Difference]: Without dead ends: 81 [2024-11-13 16:19:36,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=325, Invalid=5681, Unknown=0, NotChecked=0, Total=6006 [2024-11-13 16:19:36,902 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 19 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:36,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 599 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 16:19:36,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-13 16:19:36,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2024-11-13 16:19:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 74 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 16:19:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2024-11-13 16:19:36,909 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 63 [2024-11-13 16:19:36,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:36,909 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2024-11-13 16:19:36,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.196078431372549) internal successors, (163), 51 states have internal predecessors, (163), 0 states have call successors, (0), 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 16:19:36,910 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2024-11-13 16:19:36,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 16:19:36,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:36,910 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:36,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 16:19:37,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:37,111 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:37,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:37,111 INFO L85 PathProgramCache]: Analyzing trace with hash 248961504, now seen corresponding path program 5 times [2024-11-13 16:19:37,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:37,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058990885] [2024-11-13 16:19:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:37,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 5 proven. 71 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 16:19:37,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058990885] [2024-11-13 16:19:37,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058990885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236928095] [2024-11-13 16:19:37,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:19:37,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:37,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:37,729 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:37,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 16:19:37,918 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-13 16:19:37,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:37,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 16:19:37,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:37,934 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 16:19:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 64 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 16:19:38,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 64 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 16:19:38,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236928095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:38,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:38,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 36 [2024-11-13 16:19:38,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635223706] [2024-11-13 16:19:38,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:38,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 16:19:38,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:38,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 16:19:38,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 16:19:38,798 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 37 states, 36 states have (on average 3.9166666666666665) internal successors, (141), 37 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 16:19:39,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:39,257 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-11-13 16:19:39,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 16:19:39,258 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.9166666666666665) internal successors, (141), 37 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) Word has length 68 [2024-11-13 16:19:39,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:39,258 INFO L225 Difference]: With dead ends: 77 [2024-11-13 16:19:39,258 INFO L226 Difference]: Without dead ends: 77 [2024-11-13 16:19:39,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=244, Invalid=1478, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 16:19:39,259 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:39,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 347 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:19:39,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-13 16:19:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-13 16:19:39,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 76 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 16:19:39,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2024-11-13 16:19:39,262 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 68 [2024-11-13 16:19:39,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:39,263 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2024-11-13 16:19:39,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.9166666666666665) internal successors, (141), 37 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 16:19:39,263 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2024-11-13 16:19:39,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 16:19:39,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:39,264 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:39,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 16:19:39,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-13 16:19:39,465 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:39,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:39,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1845018467, now seen corresponding path program 7 times [2024-11-13 16:19:39,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:39,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428607845] [2024-11-13 16:19:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:39,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 9 proven. 88 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 16:19:40,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428607845] [2024-11-13 16:19:40,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428607845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624844058] [2024-11-13 16:19:40,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:19:40,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:40,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:40,238 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:40,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 16:19:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:40,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-13 16:19:40,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:40,579 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 16:19:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 9 proven. 88 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 16:19:40,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:41,052 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 20 treesize of output 12 [2024-11-13 16:19:41,119 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 16:19:41,123 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 16:19:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 9 proven. 88 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 16:19:41,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624844058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:41,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:41,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 20] total 38 [2024-11-13 16:19:41,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900631907] [2024-11-13 16:19:41,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:41,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 16:19:41,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:41,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 16:19:41,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1317, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 16:19:41,230 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 38 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 38 states have internal predecessors, (128), 0 states have call successors, (0), 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 16:19:42,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:42,873 INFO L93 Difference]: Finished difference Result 219 states and 224 transitions. [2024-11-13 16:19:42,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 16:19:42,874 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 38 states have internal predecessors, (128), 0 states have call successors, (0), 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 16:19:42,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:42,874 INFO L225 Difference]: With dead ends: 219 [2024-11-13 16:19:42,874 INFO L226 Difference]: Without dead ends: 87 [2024-11-13 16:19:42,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=246, Invalid=4176, Unknown=0, NotChecked=0, Total=4422 [2024-11-13 16:19:42,876 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:42,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 509 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 16:19:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-13 16:19:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2024-11-13 16:19:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 82 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 16:19:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2024-11-13 16:19:42,880 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 73 [2024-11-13 16:19:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:42,881 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2024-11-13 16:19:42,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 38 states have internal predecessors, (128), 0 states have call successors, (0), 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 16:19:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2024-11-13 16:19:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 16:19:42,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:42,882 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:42,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 16:19:43,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:43,083 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:43,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash 693237721, now seen corresponding path program 8 times [2024-11-13 16:19:43,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:43,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888631176] [2024-11-13 16:19:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:43,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 12 proven. 98 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 16:19:43,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:43,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888631176] [2024-11-13 16:19:43,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888631176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:43,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939439377] [2024-11-13 16:19:43,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:19:43,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:43,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:43,717 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:43,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 16:19:43,946 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:19:43,947 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:43,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 16:19:43,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 22 proven. 88 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 16:19:44,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:44,787 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 16:19:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 22 proven. 88 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 16:19:44,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939439377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:44,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:44,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 31 [2024-11-13 16:19:44,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592223527] [2024-11-13 16:19:44,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:44,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 16:19:44,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:44,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 16:19:44,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2024-11-13 16:19:44,898 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 32 states, 31 states have (on average 4.483870967741935) internal successors, (139), 32 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 16:19:45,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:45,233 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2024-11-13 16:19:45,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 16:19:45,233 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.483870967741935) internal successors, (139), 32 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) Word has length 79 [2024-11-13 16:19:45,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:45,234 INFO L225 Difference]: With dead ends: 92 [2024-11-13 16:19:45,234 INFO L226 Difference]: Without dead ends: 92 [2024-11-13 16:19:45,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 134 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 16:19:45,234 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:45,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 310 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:19:45,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-13 16:19:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2024-11-13 16:19:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 86 states have (on average 1.0465116279069768) internal successors, (90), 87 states have internal predecessors, (90), 0 states have call successors, (0), 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 16:19:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2024-11-13 16:19:45,237 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 79 [2024-11-13 16:19:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:45,238 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2024-11-13 16:19:45,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.483870967741935) internal successors, (139), 32 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 16:19:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2024-11-13 16:19:45,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 16:19:45,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:45,238 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:45,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 16:19:45,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-13 16:19:45,443 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:45,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash 481519194, now seen corresponding path program 6 times [2024-11-13 16:19:45,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:45,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695450982] [2024-11-13 16:19:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:45,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 16:19:46,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:46,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695450982] [2024-11-13 16:19:46,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695450982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:46,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537610641] [2024-11-13 16:19:46,304 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:19:46,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:46,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:46,306 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:46,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 16:19:46,673 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-13 16:19:46,674 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:46,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 16:19:46,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:47,124 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 22 proven. 98 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 16:19:47,124 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:47,536 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 16:19:47,649 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 22 proven. 98 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 16:19:47,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537610641] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:47,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:47,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 41 [2024-11-13 16:19:47,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827165006] [2024-11-13 16:19:47,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:47,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 16:19:47,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:47,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 16:19:47,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1499, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 16:19:47,652 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand has 42 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 42 states have internal predecessors, (175), 0 states have call successors, (0), 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 16:19:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:48,316 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-11-13 16:19:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 16:19:48,317 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 42 states have internal predecessors, (175), 0 states have call successors, (0), 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 81 [2024-11-13 16:19:48,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:48,317 INFO L225 Difference]: With dead ends: 90 [2024-11-13 16:19:48,317 INFO L226 Difference]: Without dead ends: 90 [2024-11-13 16:19:48,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 131 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=302, Invalid=1954, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 16:19:48,318 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:48,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 481 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:19:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-13 16:19:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-13 16:19:48,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 89 states have internal predecessors, (92), 0 states have call successors, (0), 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 16:19:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2024-11-13 16:19:48,321 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 81 [2024-11-13 16:19:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:48,321 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2024-11-13 16:19:48,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 42 states have internal predecessors, (175), 0 states have call successors, (0), 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 16:19:48,322 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2024-11-13 16:19:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 16:19:48,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:48,323 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:48,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 16:19:48,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:48,524 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:48,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:48,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2075037597, now seen corresponding path program 9 times [2024-11-13 16:19:48,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:48,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706450805] [2024-11-13 16:19:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:48,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 11 proven. 135 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 16:19:49,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:49,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706450805] [2024-11-13 16:19:49,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706450805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:49,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878565991] [2024-11-13 16:19:49,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:19:49,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:49,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:49,350 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:49,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 16:19:49,700 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-13 16:19:49,701 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:49,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-11-13 16:19:49,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:49,977 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 8 treesize of output 1 [2024-11-13 16:19:49,987 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 16:19:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 11 proven. 135 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 16:19:50,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:51,606 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 22 treesize of output 20 [2024-11-13 16:19:51,609 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 34 treesize of output 30 [2024-11-13 16:19:51,664 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 3 [2024-11-13 16:19:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 11 proven. 135 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 16:19:52,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878565991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:52,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:52,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28, 28] total 68 [2024-11-13 16:19:52,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453858765] [2024-11-13 16:19:52,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:52,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-13 16:19:52,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:52,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-13 16:19:52,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=4341, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 16:19:52,056 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 68 states, 68 states have (on average 3.0441176470588234) internal successors, (207), 68 states have internal predecessors, (207), 0 states have call successors, (0), 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 16:19:54,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:54,849 INFO L93 Difference]: Finished difference Result 257 states and 262 transitions. [2024-11-13 16:19:54,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-13 16:19:54,849 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.0441176470588234) internal successors, (207), 68 states have internal predecessors, (207), 0 states have call successors, (0), 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 86 [2024-11-13 16:19:54,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:54,850 INFO L225 Difference]: With dead ends: 257 [2024-11-13 16:19:54,850 INFO L226 Difference]: Without dead ends: 100 [2024-11-13 16:19:54,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1658 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=490, Invalid=10016, Unknown=0, NotChecked=0, Total=10506 [2024-11-13 16:19:54,852 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 3010 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 3020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:54,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 754 Invalid, 3020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3010 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 16:19:54,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-13 16:19:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2024-11-13 16:19:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 95 states have internal predecessors, (98), 0 states have call successors, (0), 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 16:19:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2024-11-13 16:19:54,855 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 86 [2024-11-13 16:19:54,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:54,855 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2024-11-13 16:19:54,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.0441176470588234) internal successors, (207), 68 states have internal predecessors, (207), 0 states have call successors, (0), 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 16:19:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2024-11-13 16:19:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 16:19:54,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:54,857 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:54,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 16:19:55,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:55,057 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:55,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:55,058 INFO L85 PathProgramCache]: Analyzing trace with hash 771631647, now seen corresponding path program 10 times [2024-11-13 16:19:55,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:55,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763153712] [2024-11-13 16:19:55,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:55,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 22 proven. 140 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:19:55,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:55,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763153712] [2024-11-13 16:19:55,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763153712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:55,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546552499] [2024-11-13 16:19:55,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:19:55,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:55,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:55,845 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:55,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 16:19:56,140 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:19:56,140 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:56,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-13 16:19:56,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 35 proven. 127 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:19:56,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:56,918 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 21 treesize of output 17 [2024-11-13 16:19:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 35 proven. 127 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:19:57,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546552499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:57,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:57,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 40 [2024-11-13 16:19:57,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937029025] [2024-11-13 16:19:57,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:57,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 16:19:57,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:57,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 16:19:57,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1416, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 16:19:57,213 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 41 states, 40 states have (on average 4.6) internal successors, (184), 41 states have internal predecessors, (184), 0 states have call successors, (0), 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 16:19:57,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:57,651 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2024-11-13 16:19:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:19:57,652 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 4.6) internal successors, (184), 41 states have internal predecessors, (184), 0 states have call successors, (0), 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 16:19:57,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:57,652 INFO L225 Difference]: With dead ends: 105 [2024-11-13 16:19:57,653 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 16:19:57,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=246, Invalid=1476, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 16:19:57,653 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:57,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 474 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:19:57,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 16:19:57,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2024-11-13 16:19:57,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 100 states have internal predecessors, (103), 0 states have call successors, (0), 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 16:19:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2024-11-13 16:19:57,656 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 92 [2024-11-13 16:19:57,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:57,656 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2024-11-13 16:19:57,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 4.6) internal successors, (184), 41 states have internal predecessors, (184), 0 states have call successors, (0), 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 16:19:57,657 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2024-11-13 16:19:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-13 16:19:57,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:57,659 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:57,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 16:19:57,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:57,860 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:19:57,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:57,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1491329248, now seen corresponding path program 7 times [2024-11-13 16:19:57,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:57,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829761183] [2024-11-13 16:19:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 22 proven. 152 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:19:58,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829761183] [2024-11-13 16:19:58,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829761183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602164591] [2024-11-13 16:19:58,677 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:19:58,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:58,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:58,679 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:58,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 16:19:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:58,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-13 16:19:58,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 35 proven. 139 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:19:59,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:59,895 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 16:20:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 35 proven. 139 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:20:00,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602164591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:00,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:00,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 39 [2024-11-13 16:20:00,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990927046] [2024-11-13 16:20:00,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:00,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-13 16:20:00,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:00,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-13 16:20:00,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1382, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 16:20:00,051 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 40 states, 39 states have (on average 4.102564102564102) internal successors, (160), 40 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 16:20:00,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:00,933 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2024-11-13 16:20:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 16:20:00,934 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.102564102564102) internal successors, (160), 40 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) Word has length 94 [2024-11-13 16:20:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:00,935 INFO L225 Difference]: With dead ends: 103 [2024-11-13 16:20:00,935 INFO L226 Difference]: Without dead ends: 103 [2024-11-13 16:20:00,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 160 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 16:20:00,938 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:00,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 609 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 16:20:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-13 16:20:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-13 16:20:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.0396039603960396) internal successors, (105), 102 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 16:20:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2024-11-13 16:20:00,945 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 94 [2024-11-13 16:20:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:00,945 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2024-11-13 16:20:00,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.102564102564102) internal successors, (160), 40 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 16:20:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2024-11-13 16:20:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-13 16:20:00,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:00,947 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:00,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 16:20:01,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:01,148 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:20:01,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2005187747, now seen corresponding path program 11 times [2024-11-13 16:20:01,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:01,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357268372] [2024-11-13 16:20:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:01,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 13 proven. 192 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:20:02,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:02,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357268372] [2024-11-13 16:20:02,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357268372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:02,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15922630] [2024-11-13 16:20:02,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:20:02,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:02,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:02,166 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:02,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 16:20:02,458 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-13 16:20:02,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:02,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-13 16:20:02,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:02,647 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 16:20:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 13 proven. 192 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:20:02,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:03,124 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 16:20:03,127 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 16:20:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 13 proven. 192 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:20:03,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15922630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:03,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:03,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-11-13 16:20:03,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055885636] [2024-11-13 16:20:03,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:03,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 16:20:03,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:03,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 16:20:03,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1528, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 16:20:03,408 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand has 41 states, 41 states have (on average 4.048780487804878) internal successors, (166), 41 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 16:20:04,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:04,128 INFO L93 Difference]: Finished difference Result 181 states and 184 transitions. [2024-11-13 16:20:04,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 16:20:04,129 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.048780487804878) internal successors, (166), 41 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 99 [2024-11-13 16:20:04,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:04,129 INFO L225 Difference]: With dead ends: 181 [2024-11-13 16:20:04,129 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 16:20:04,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=1933, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 16:20:04,130 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 10 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:04,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1194 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:20:04,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 16:20:04,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2024-11-13 16:20:04,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 104 states have (on average 1.0384615384615385) internal successors, (108), 105 states have internal predecessors, (108), 0 states have call successors, (0), 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 16:20:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2024-11-13 16:20:04,132 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 99 [2024-11-13 16:20:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:04,133 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2024-11-13 16:20:04,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.048780487804878) internal successors, (166), 41 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 16:20:04,133 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2024-11-13 16:20:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-13 16:20:04,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:04,134 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:04,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 16:20:04,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:04,335 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:20:04,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:04,335 INFO L85 PathProgramCache]: Analyzing trace with hash 41048043, now seen corresponding path program 12 times [2024-11-13 16:20:04,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:04,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241988202] [2024-11-13 16:20:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:04,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 35 proven. 189 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:20:05,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:05,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241988202] [2024-11-13 16:20:05,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241988202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:05,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569504928] [2024-11-13 16:20:05,243 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:20:05,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:05,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:05,245 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:05,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 16:20:05,740 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-13 16:20:05,740 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:05,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-13 16:20:05,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 51 proven. 173 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:20:06,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:06,928 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 16:20:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 51 proven. 173 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 16:20:07,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569504928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:07,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:07,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 47 [2024-11-13 16:20:07,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488484530] [2024-11-13 16:20:07,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:07,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-13 16:20:07,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:07,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-13 16:20:07,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1929, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 16:20:07,111 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand has 48 states, 47 states have (on average 4.76595744680851) internal successors, (224), 48 states have internal predecessors, (224), 0 states have call successors, (0), 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 16:20:07,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:07,918 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2024-11-13 16:20:07,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 16:20:07,918 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.76595744680851) internal successors, (224), 48 states have internal predecessors, (224), 0 states have call successors, (0), 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 102 [2024-11-13 16:20:07,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:07,919 INFO L225 Difference]: With dead ends: 115 [2024-11-13 16:20:07,919 INFO L226 Difference]: Without dead ends: 115 [2024-11-13 16:20:07,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 167 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=436, Invalid=2644, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 16:20:07,920 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:07,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 568 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:20:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-13 16:20:07,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2024-11-13 16:20:07,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.036697247706422) internal successors, (113), 110 states have internal predecessors, (113), 0 states have call successors, (0), 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 16:20:07,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2024-11-13 16:20:07,923 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 102 [2024-11-13 16:20:07,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:07,923 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2024-11-13 16:20:07,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.76595744680851) internal successors, (224), 48 states have internal predecessors, (224), 0 states have call successors, (0), 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 16:20:07,923 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2024-11-13 16:20:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-13 16:20:07,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:07,924 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:07,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 16:20:08,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:08,125 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:20:08,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:08,125 INFO L85 PathProgramCache]: Analyzing trace with hash 792463852, now seen corresponding path program 8 times [2024-11-13 16:20:08,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:08,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478704089] [2024-11-13 16:20:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:08,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 27 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:20:10,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478704089] [2024-11-13 16:20:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478704089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233264508] [2024-11-13 16:20:10,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:20:10,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:10,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:10,363 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:10,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 16:20:10,605 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:20:10,605 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:10,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-13 16:20:10,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:10,919 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 16:20:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 27 proven. 192 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:20:11,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:11,227 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 20 treesize of output 12 [2024-11-13 16:20:11,334 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 16:20:11,336 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 16:20:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 27 proven. 192 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:20:11,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233264508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:11,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:11,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 24, 24] total 51 [2024-11-13 16:20:11,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303251322] [2024-11-13 16:20:11,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:11,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-13 16:20:11,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-13 16:20:11,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2401, Unknown=0, NotChecked=0, Total=2550 [2024-11-13 16:20:11,458 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand has 51 states, 51 states have (on average 2.8823529411764706) internal successors, (147), 51 states have internal predecessors, (147), 0 states have call successors, (0), 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 16:20:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:13,262 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2024-11-13 16:20:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 16:20:13,263 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.8823529411764706) internal successors, (147), 51 states have internal predecessors, (147), 0 states have call successors, (0), 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 104 [2024-11-13 16:20:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:13,264 INFO L225 Difference]: With dead ends: 171 [2024-11-13 16:20:13,264 INFO L226 Difference]: Without dead ends: 118 [2024-11-13 16:20:13,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=236, Invalid=3796, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 16:20:13,265 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 27 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 2578 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:13,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1168 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2578 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 16:20:13,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-13 16:20:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2024-11-13 16:20:13,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 113 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 16:20:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2024-11-13 16:20:13,269 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 104 [2024-11-13 16:20:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:13,270 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2024-11-13 16:20:13,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.8823529411764706) internal successors, (147), 51 states have internal predecessors, (147), 0 states have call successors, (0), 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 16:20:13,271 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2024-11-13 16:20:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-13 16:20:13,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:13,272 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:13,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 16:20:13,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-13 16:20:13,472 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:20:13,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:13,473 INFO L85 PathProgramCache]: Analyzing trace with hash -163032294, now seen corresponding path program 9 times [2024-11-13 16:20:13,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:13,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125483649] [2024-11-13 16:20:13,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:13,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:14,600 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 35 proven. 203 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:20:14,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:14,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125483649] [2024-11-13 16:20:14,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125483649] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:14,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186713062] [2024-11-13 16:20:14,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:20:14,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:14,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:14,602 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:14,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 16:20:15,349 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-13 16:20:15,349 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:15,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-13 16:20:15,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:15,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-13 16:20:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 51 proven. 187 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:20:16,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 51 proven. 187 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:20:17,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186713062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:17,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:17,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 59 [2024-11-13 16:20:17,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303055571] [2024-11-13 16:20:17,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:17,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-13 16:20:17,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:17,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-13 16:20:17,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=3096, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 16:20:17,054 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand has 60 states, 59 states have (on average 4.305084745762712) internal successors, (254), 60 states have internal predecessors, (254), 0 states have call successors, (0), 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 16:20:17,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:17,910 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2024-11-13 16:20:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 16:20:17,911 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 4.305084745762712) internal successors, (254), 60 states have internal predecessors, (254), 0 states have call successors, (0), 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 107 [2024-11-13 16:20:17,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:17,911 INFO L225 Difference]: With dead ends: 116 [2024-11-13 16:20:17,912 INFO L226 Difference]: Without dead ends: 116 [2024-11-13 16:20:17,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=575, Invalid=3981, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 16:20:17,912 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:17,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 632 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:20:17,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-13 16:20:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-13 16:20:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 115 states have internal predecessors, (118), 0 states have call successors, (0), 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 16:20:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2024-11-13 16:20:17,915 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 107 [2024-11-13 16:20:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:17,916 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2024-11-13 16:20:17,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 4.305084745762712) internal successors, (254), 60 states have internal predecessors, (254), 0 states have call successors, (0), 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 16:20:17,916 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2024-11-13 16:20:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 16:20:17,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:17,917 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:17,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 16:20:18,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:18,117 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:20:18,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2037220445, now seen corresponding path program 13 times [2024-11-13 16:20:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:18,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632665218] [2024-11-13 16:20:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:18,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 15 proven. 259 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:20:19,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:19,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632665218] [2024-11-13 16:20:19,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632665218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:19,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589562310] [2024-11-13 16:20:19,234 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:20:19,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:19,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:19,236 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:19,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 16:20:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:19,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-13 16:20:19,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:19,801 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 16:20:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 15 proven. 259 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:20:19,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:20,047 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 16:20:20,048 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 16:20:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 15 proven. 259 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:20:20,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589562310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:20,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:20,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 37 [2024-11-13 16:20:20,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25942244] [2024-11-13 16:20:20,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:20,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 16:20:20,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 16:20:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 16:20:20,167 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand has 37 states, 37 states have (on average 3.6486486486486487) internal successors, (135), 37 states have internal predecessors, (135), 0 states have call successors, (0), 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 16:20:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:20,841 INFO L93 Difference]: Finished difference Result 204 states and 207 transitions. [2024-11-13 16:20:20,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 16:20:20,841 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6486486486486487) internal successors, (135), 37 states have internal predecessors, (135), 0 states have call successors, (0), 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 112 [2024-11-13 16:20:20,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:20,842 INFO L225 Difference]: With dead ends: 204 [2024-11-13 16:20:20,842 INFO L226 Difference]: Without dead ends: 121 [2024-11-13 16:20:20,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=137, Invalid=1755, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 16:20:20,843 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 13 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:20,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1010 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:20:20,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-13 16:20:20,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2024-11-13 16:20:20,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 118 states have internal predecessors, (121), 0 states have call successors, (0), 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 16:20:20,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2024-11-13 16:20:20,845 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 112 [2024-11-13 16:20:20,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:20,846 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2024-11-13 16:20:20,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6486486486486487) internal successors, (135), 37 states have internal predecessors, (135), 0 states have call successors, (0), 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 16:20:20,846 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2024-11-13 16:20:20,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-13 16:20:20,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:20,847 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:20,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 16:20:21,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-13 16:20:21,052 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:20:21,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash -759054891, now seen corresponding path program 14 times [2024-11-13 16:20:21,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:21,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845006416] [2024-11-13 16:20:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:21,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 51 proven. 245 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:20:21,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:21,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845006416] [2024-11-13 16:20:21,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845006416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:21,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130636230] [2024-11-13 16:20:21,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:20:21,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:21,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:21,974 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:21,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 16:20:22,223 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:20:22,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:22,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-13 16:20:22,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 70 proven. 226 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:20:22,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:23,176 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 16:20:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 70 proven. 226 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:20:23,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130636230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:23,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:23,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 44 [2024-11-13 16:20:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134674491] [2024-11-13 16:20:23,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:23,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 16:20:23,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:23,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 16:20:23,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1751, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 16:20:23,385 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 45 states, 44 states have (on average 4.5227272727272725) internal successors, (199), 45 states have internal predecessors, (199), 0 states have call successors, (0), 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 16:20:24,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:24,072 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2024-11-13 16:20:24,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 16:20:24,073 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 4.5227272727272725) internal successors, (199), 45 states have internal predecessors, (199), 0 states have call successors, (0), 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 115 [2024-11-13 16:20:24,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:24,074 INFO L225 Difference]: With dead ends: 128 [2024-11-13 16:20:24,074 INFO L226 Difference]: Without dead ends: 128 [2024-11-13 16:20:24,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 197 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=262, Invalid=1900, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 16:20:24,074 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:24,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 623 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:20:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-13 16:20:24,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2024-11-13 16:20:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 123 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 16:20:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2024-11-13 16:20:24,077 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 115 [2024-11-13 16:20:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:24,078 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2024-11-13 16:20:24,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 4.5227272727272725) internal successors, (199), 45 states have internal predecessors, (199), 0 states have call successors, (0), 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 16:20:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2024-11-13 16:20:24,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-13 16:20:24,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:24,079 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:24,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 16:20:24,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-13 16:20:24,279 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:20:24,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash 692690262, now seen corresponding path program 10 times [2024-11-13 16:20:24,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:24,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617800878] [2024-11-13 16:20:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:24,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 31 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:20:26,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:26,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617800878] [2024-11-13 16:20:26,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617800878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:26,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874568397] [2024-11-13 16:20:26,912 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:20:26,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:26,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:26,915 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:26,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 16:20:27,420 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:20:27,421 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:27,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-13 16:20:27,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:27,782 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 15 treesize of output 1 [2024-11-13 16:20:28,374 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 16:20:28,494 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 16:20:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 31 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:20:30,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:32,541 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 22 treesize of output 20 [2024-11-13 16:20:32,546 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 34 treesize of output 30 [2024-11-13 16:20:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 31 proven. 259 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 16:20:33,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874568397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:33,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:33,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 44, 34] total 109 [2024-11-13 16:20:33,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719152448] [2024-11-13 16:20:33,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:33,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-11-13 16:20:33,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:33,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-11-13 16:20:33,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=11390, Unknown=0, NotChecked=0, Total=11772 [2024-11-13 16:20:33,672 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand has 109 states, 109 states have (on average 2.853211009174312) internal successors, (311), 109 states have internal predecessors, (311), 0 states have call successors, (0), 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 16:20:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:38,251 INFO L93 Difference]: Finished difference Result 191 states and 193 transitions. [2024-11-13 16:20:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-13 16:20:38,252 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.853211009174312) internal successors, (311), 109 states have internal predecessors, (311), 0 states have call successors, (0), 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 117 [2024-11-13 16:20:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:38,253 INFO L225 Difference]: With dead ends: 191 [2024-11-13 16:20:38,253 INFO L226 Difference]: Without dead ends: 131 [2024-11-13 16:20:38,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4567 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=624, Invalid=17198, Unknown=0, NotChecked=0, Total=17822 [2024-11-13 16:20:38,254 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 29 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 5832 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 5839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 5832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:38,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1202 Invalid, 5839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 5832 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-13 16:20:38,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-13 16:20:38,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-11-13 16:20:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 125 states have (on average 1.032) internal successors, (129), 126 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 16:20:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2024-11-13 16:20:38,257 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 117 [2024-11-13 16:20:38,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:38,257 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2024-11-13 16:20:38,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.853211009174312) internal successors, (311), 109 states have internal predecessors, (311), 0 states have call successors, (0), 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 16:20:38,258 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2024-11-13 16:20:38,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-13 16:20:38,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:38,258 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:38,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 16:20:38,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:38,459 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:20:38,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:38,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2052822112, now seen corresponding path program 11 times [2024-11-13 16:20:38,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:38,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050720798] [2024-11-13 16:20:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:38,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 51 proven. 261 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 16:20:39,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:39,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050720798] [2024-11-13 16:20:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050720798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:39,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465683158] [2024-11-13 16:20:39,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:20:39,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:39,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:39,563 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:39,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 16:20:40,047 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-13 16:20:40,047 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:40,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-13 16:20:40,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:40,066 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 16:20:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 70 proven. 242 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 16:20:40,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 70 proven. 242 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 16:20:41,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465683158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:41,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:41,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 56 [2024-11-13 16:20:41,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502033163] [2024-11-13 16:20:41,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:41,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-13 16:20:41,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:41,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-13 16:20:41,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=2745, Unknown=0, NotChecked=0, Total=3192 [2024-11-13 16:20:41,816 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand has 57 states, 56 states have (on average 4.160714285714286) internal successors, (233), 57 states have internal predecessors, (233), 0 states have call successors, (0), 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 16:20:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:42,698 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2024-11-13 16:20:42,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 16:20:42,699 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 4.160714285714286) internal successors, (233), 57 states have internal predecessors, (233), 0 states have call successors, (0), 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 120 [2024-11-13 16:20:42,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:42,699 INFO L225 Difference]: With dead ends: 129 [2024-11-13 16:20:42,699 INFO L226 Difference]: Without dead ends: 129 [2024-11-13 16:20:42,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1397 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=547, Invalid=3743, Unknown=0, NotChecked=0, Total=4290 [2024-11-13 16:20:42,700 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:42,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 622 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:20:42,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-13 16:20:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-13 16:20:42,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 127 states have (on average 1.031496062992126) internal successors, (131), 128 states have internal predecessors, (131), 0 states have call successors, (0), 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 16:20:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2024-11-13 16:20:42,703 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 120 [2024-11-13 16:20:42,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:42,703 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2024-11-13 16:20:42,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 4.160714285714286) internal successors, (233), 57 states have internal predecessors, (233), 0 states have call successors, (0), 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 16:20:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2024-11-13 16:20:42,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-13 16:20:42,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:42,704 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:42,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 16:20:42,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-13 16:20:42,905 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:20:42,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:42,905 INFO L85 PathProgramCache]: Analyzing trace with hash -120383971, now seen corresponding path program 15 times [2024-11-13 16:20:42,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:42,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003595551] [2024-11-13 16:20:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:42,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 17 proven. 336 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 16:20:44,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:44,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003595551] [2024-11-13 16:20:44,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003595551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:44,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238588023] [2024-11-13 16:20:44,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:20:44,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:44,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:44,044 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:44,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 16:20:45,089 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-13 16:20:45,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:45,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 172 conjuncts are in the unsatisfiable core [2024-11-13 16:20:45,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:46,092 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 16:20:47,325 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 16:20:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 17 proven. 428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:20:47,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:47,490 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 8 treesize of output 4 [2024-11-13 16:20:47,672 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 16:20:47,673 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 16:20:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 17 proven. 358 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:20:48,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238588023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:48,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:48,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 46, 28] total 84 [2024-11-13 16:20:48,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170572455] [2024-11-13 16:20:48,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:48,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-13 16:20:48,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:48,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-13 16:20:48,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=6646, Unknown=0, NotChecked=0, Total=6972 [2024-11-13 16:20:48,313 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand has 84 states, 84 states have (on average 3.1785714285714284) internal successors, (267), 84 states have internal predecessors, (267), 0 states have call successors, (0), 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 16:20:50,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:50,325 INFO L93 Difference]: Finished difference Result 232 states and 236 transitions. [2024-11-13 16:20:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-13 16:20:50,326 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.1785714285714284) internal successors, (267), 84 states have internal predecessors, (267), 0 states have call successors, (0), 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 125 [2024-11-13 16:20:50,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:50,327 INFO L225 Difference]: With dead ends: 232 [2024-11-13 16:20:50,327 INFO L226 Difference]: Without dead ends: 134 [2024-11-13 16:20:50,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2182 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=368, Invalid=7822, Unknown=0, NotChecked=0, Total=8190 [2024-11-13 16:20:50,328 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 22 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 3696 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 3705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:50,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1123 Invalid, 3705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3696 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 16:20:50,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-13 16:20:50,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2024-11-13 16:20:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 130 states have (on average 1.0307692307692307) internal successors, (134), 131 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 16:20:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2024-11-13 16:20:50,330 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 125 [2024-11-13 16:20:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:50,330 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2024-11-13 16:20:50,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.1785714285714284) internal successors, (267), 84 states have internal predecessors, (267), 0 states have call successors, (0), 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 16:20:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2024-11-13 16:20:50,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-13 16:20:50,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:50,331 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:50,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 16:20:50,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-13 16:20:50,531 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:20:50,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:50,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2085647659, now seen corresponding path program 16 times [2024-11-13 16:20:50,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:50,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906412179] [2024-11-13 16:20:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:50,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 70 proven. 308 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 16:20:51,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:51,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906412179] [2024-11-13 16:20:51,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906412179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:51,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279809596] [2024-11-13 16:20:51,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:20:51,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:51,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:51,555 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:51,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 16:20:52,268 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:20:52,268 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:52,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-13 16:20:52,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 92 proven. 286 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 16:20:53,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:53,698 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 21 treesize of output 17 [2024-11-13 16:20:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 92 proven. 286 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 16:20:54,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279809596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:54,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:54,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 55 [2024-11-13 16:20:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267795218] [2024-11-13 16:20:54,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:54,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 16:20:54,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:54,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 16:20:54,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=2664, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 16:20:54,350 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand has 56 states, 55 states have (on average 4.6) internal successors, (253), 56 states have internal predecessors, (253), 0 states have call successors, (0), 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 16:20:55,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:55,246 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-11-13 16:20:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 16:20:55,246 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.6) internal successors, (253), 56 states have internal predecessors, (253), 0 states have call successors, (0), 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 128 [2024-11-13 16:20:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:55,247 INFO L225 Difference]: With dead ends: 141 [2024-11-13 16:20:55,247 INFO L226 Difference]: Without dead ends: 141 [2024-11-13 16:20:55,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=447, Invalid=2745, Unknown=0, NotChecked=0, Total=3192 [2024-11-13 16:20:55,248 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 13 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:55,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 973 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:20:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-13 16:20:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2024-11-13 16:20:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 135 states have (on average 1.0296296296296297) internal successors, (139), 136 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 16:20:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2024-11-13 16:20:55,251 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 128 [2024-11-13 16:20:55,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:55,251 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2024-11-13 16:20:55,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.6) internal successors, (253), 56 states have internal predecessors, (253), 0 states have call successors, (0), 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 16:20:55,251 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2024-11-13 16:20:55,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-13 16:20:55,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:55,252 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:55,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 16:20:55,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-13 16:20:55,453 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:20:55,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:55,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1442326740, now seen corresponding path program 12 times [2024-11-13 16:20:55,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:55,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924122837] [2024-11-13 16:20:55,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:55,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 35 proven. 453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:20:58,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:58,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924122837] [2024-11-13 16:20:58,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924122837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:58,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655372409] [2024-11-13 16:20:58,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:20:58,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:58,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:58,505 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:58,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 16:20:59,560 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-13 16:20:59,561 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:59,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 213 conjuncts are in the unsatisfiable core [2024-11-13 16:20:59,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:00,488 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 16:21:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 35 proven. 453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:01,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:01,930 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 20 treesize of output 12 [2024-11-13 16:21:02,122 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 16:21:02,124 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 16:21:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 35 proven. 336 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-13 16:21:02,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655372409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:02,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:02,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 48, 28] total 88 [2024-11-13 16:21:02,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726816245] [2024-11-13 16:21:02,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:02,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-13 16:21:02,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:02,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-13 16:21:02,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=7366, Unknown=0, NotChecked=0, Total=7656 [2024-11-13 16:21:02,710 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand has 88 states, 88 states have (on average 2.977272727272727) internal successors, (262), 88 states have internal predecessors, (262), 0 states have call successors, (0), 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 16:21:05,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:05,375 INFO L93 Difference]: Finished difference Result 214 states and 217 transitions. [2024-11-13 16:21:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-13 16:21:05,376 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.977272727272727) internal successors, (262), 88 states have internal predecessors, (262), 0 states have call successors, (0), 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 130 [2024-11-13 16:21:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:05,377 INFO L225 Difference]: With dead ends: 214 [2024-11-13 16:21:05,377 INFO L226 Difference]: Without dead ends: 147 [2024-11-13 16:21:05,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2461 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=351, Invalid=8769, Unknown=0, NotChecked=0, Total=9120 [2024-11-13 16:21:05,378 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 5492 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 5508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:05,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1687 Invalid, 5508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 5492 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-13 16:21:05,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-13 16:21:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 140. [2024-11-13 16:21:05,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 138 states have (on average 1.0289855072463767) internal successors, (142), 139 states have internal predecessors, (142), 0 states have call successors, (0), 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 16:21:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2024-11-13 16:21:05,383 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 130 [2024-11-13 16:21:05,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:05,383 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2024-11-13 16:21:05,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.977272727272727) internal successors, (262), 88 states have internal predecessors, (262), 0 states have call successors, (0), 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 16:21:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2024-11-13 16:21:05,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-13 16:21:05,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:05,385 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:05,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 16:21:05,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-13 16:21:05,589 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:21:05,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:05,590 INFO L85 PathProgramCache]: Analyzing trace with hash -796389414, now seen corresponding path program 13 times [2024-11-13 16:21:05,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:05,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082948905] [2024-11-13 16:21:05,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:05,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 70 proven. 326 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-13 16:21:06,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082948905] [2024-11-13 16:21:06,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082948905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365772743] [2024-11-13 16:21:06,647 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:21:06,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:06,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:06,649 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:06,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 16:21:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:06,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-13 16:21:06,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 92 proven. 304 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-13 16:21:07,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:08,104 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 16:21:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 92 proven. 304 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-13 16:21:08,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365772743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:08,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:08,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 51 [2024-11-13 16:21:08,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982059476] [2024-11-13 16:21:08,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:08,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-13 16:21:08,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:08,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-13 16:21:08,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2355, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 16:21:08,342 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand has 52 states, 51 states have (on average 4.313725490196078) internal successors, (220), 52 states have internal predecessors, (220), 0 states have call successors, (0), 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 16:21:09,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:09,326 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2024-11-13 16:21:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 16:21:09,326 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.313725490196078) internal successors, (220), 52 states have internal predecessors, (220), 0 states have call successors, (0), 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 133 [2024-11-13 16:21:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:09,327 INFO L225 Difference]: With dead ends: 142 [2024-11-13 16:21:09,327 INFO L226 Difference]: Without dead ends: 142 [2024-11-13 16:21:09,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 229 SyntacticMatches, 10 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=403, Invalid=3379, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 16:21:09,328 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 4 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:09,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 705 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 16:21:09,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-13 16:21:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-13 16:21:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 140 states have (on average 1.0285714285714285) internal successors, (144), 141 states have internal predecessors, (144), 0 states have call successors, (0), 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 16:21:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2024-11-13 16:21:09,330 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 133 [2024-11-13 16:21:09,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:09,331 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2024-11-13 16:21:09,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.313725490196078) internal successors, (220), 52 states have internal predecessors, (220), 0 states have call successors, (0), 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 16:21:09,331 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2024-11-13 16:21:09,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-13 16:21:09,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:09,332 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:09,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 16:21:09,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-13 16:21:09,532 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:21:09,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:09,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1382725347, now seen corresponding path program 17 times [2024-11-13 16:21:09,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:09,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381763985] [2024-11-13 16:21:09,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:09,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 19 proven. 423 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-13 16:21:10,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:10,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381763985] [2024-11-13 16:21:10,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381763985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:10,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110525960] [2024-11-13 16:21:10,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:21:10,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:10,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:10,890 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:10,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 16:21:11,589 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-13 16:21:11,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:11,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 205 conjuncts are in the unsatisfiable core [2024-11-13 16:21:11,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:12,136 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 16:21:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 19 proven. 423 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-13 16:21:13,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:13,757 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 20 treesize of output 12 [2024-11-13 16:21:14,494 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 16:21:14,496 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 16:21:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 19 proven. 423 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-13 16:21:15,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110525960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:15,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:15,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 40, 30] total 90 [2024-11-13 16:21:15,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871377829] [2024-11-13 16:21:15,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:15,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-13 16:21:15,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:15,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-13 16:21:15,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=7757, Unknown=0, NotChecked=0, Total=8010 [2024-11-13 16:21:15,241 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand has 90 states, 90 states have (on average 3.6333333333333333) internal successors, (327), 90 states have internal predecessors, (327), 0 states have call successors, (0), 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 16:21:20,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:20,763 INFO L93 Difference]: Finished difference Result 405 states and 410 transitions. [2024-11-13 16:21:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-13 16:21:20,763 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 3.6333333333333333) internal successors, (327), 90 states have internal predecessors, (327), 0 states have call successors, (0), 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 138 [2024-11-13 16:21:20,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:20,764 INFO L225 Difference]: With dead ends: 405 [2024-11-13 16:21:20,764 INFO L226 Difference]: Without dead ends: 152 [2024-11-13 16:21:20,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3104 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=637, Invalid=20243, Unknown=0, NotChecked=0, Total=20880 [2024-11-13 16:21:20,765 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 6823 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 6841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 6823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:20,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1566 Invalid, 6841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 6823 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 16:21:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-13 16:21:20,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2024-11-13 16:21:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.0273972602739727) internal successors, (150), 147 states have internal predecessors, (150), 0 states have call successors, (0), 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 16:21:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2024-11-13 16:21:20,768 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 138 [2024-11-13 16:21:20,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:20,768 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2024-11-13 16:21:20,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 3.6333333333333333) internal successors, (327), 90 states have internal predecessors, (327), 0 states have call successors, (0), 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 16:21:20,768 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2024-11-13 16:21:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-13 16:21:20,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:20,768 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:20,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 16:21:20,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:20,969 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:21:20,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:20,969 INFO L85 PathProgramCache]: Analyzing trace with hash 333440159, now seen corresponding path program 18 times [2024-11-13 16:21:20,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:20,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449755430] [2024-11-13 16:21:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:20,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 92 proven. 378 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 16:21:21,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:21,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449755430] [2024-11-13 16:21:21,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449755430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:21,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222726109] [2024-11-13 16:21:21,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:21:21,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:21,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:21,962 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:21,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 16:21:24,491 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-13 16:21:24,491 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:24,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-13 16:21:24,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 117 proven. 353 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 16:21:25,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:26,071 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 16:21:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 117 proven. 353 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 16:21:26,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222726109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:26,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:26,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 61 [2024-11-13 16:21:26,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125992104] [2024-11-13 16:21:26,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:26,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 16:21:26,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 16:21:26,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=552, Invalid=3230, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 16:21:26,350 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand has 62 states, 61 states have (on average 5.0) internal successors, (305), 62 states have internal predecessors, (305), 0 states have call successors, (0), 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 16:21:27,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:27,283 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-11-13 16:21:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 16:21:27,284 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 5.0) internal successors, (305), 62 states have internal predecessors, (305), 0 states have call successors, (0), 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 144 [2024-11-13 16:21:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:27,284 INFO L225 Difference]: With dead ends: 157 [2024-11-13 16:21:27,284 INFO L226 Difference]: Without dead ends: 157 [2024-11-13 16:21:27,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 239 SyntacticMatches, 11 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2047 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=735, Invalid=4521, Unknown=0, NotChecked=0, Total=5256 [2024-11-13 16:21:27,285 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 15 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:27,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 831 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:21:27,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-13 16:21:27,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2024-11-13 16:21:27,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 152 states have internal predecessors, (155), 0 states have call successors, (0), 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 16:21:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2024-11-13 16:21:27,287 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 144 [2024-11-13 16:21:27,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:27,287 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2024-11-13 16:21:27,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 5.0) internal successors, (305), 62 states have internal predecessors, (305), 0 states have call successors, (0), 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 16:21:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2024-11-13 16:21:27,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-13 16:21:27,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:27,288 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:27,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 16:21:27,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:27,489 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:21:27,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:27,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1686554208, now seen corresponding path program 14 times [2024-11-13 16:21:27,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:27,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769410741] [2024-11-13 16:21:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:27,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 92 proven. 398 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 16:21:28,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:28,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769410741] [2024-11-13 16:21:28,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769410741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:28,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140190681] [2024-11-13 16:21:28,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:21:28,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:28,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:28,847 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:28,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-13 16:21:29,156 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:21:29,156 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:29,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-13 16:21:29,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 117 proven. 373 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 16:21:29,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:30,479 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 16:21:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 117 proven. 373 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 16:21:30,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140190681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:30,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:30,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 55 [2024-11-13 16:21:30,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138833667] [2024-11-13 16:21:30,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:30,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 16:21:30,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:30,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 16:21:30,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2735, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 16:21:30,748 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand has 56 states, 55 states have (on average 4.363636363636363) internal successors, (240), 56 states have internal predecessors, (240), 0 states have call successors, (0), 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 16:21:31,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:31,972 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions. [2024-11-13 16:21:31,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 16:21:31,972 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.363636363636363) internal successors, (240), 56 states have internal predecessors, (240), 0 states have call successors, (0), 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 146 [2024-11-13 16:21:31,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:31,973 INFO L225 Difference]: With dead ends: 155 [2024-11-13 16:21:31,973 INFO L226 Difference]: Without dead ends: 155 [2024-11-13 16:21:31,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 252 SyntacticMatches, 11 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1779 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=467, Invalid=3955, Unknown=0, NotChecked=0, Total=4422 [2024-11-13 16:21:31,973 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 2 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:31,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 947 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 16:21:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-13 16:21:31,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2024-11-13 16:21:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 153 states have (on average 1.026143790849673) internal successors, (157), 154 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 16:21:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2024-11-13 16:21:31,976 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 146 [2024-11-13 16:21:31,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:31,977 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2024-11-13 16:21:31,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.363636363636363) internal successors, (240), 56 states have internal predecessors, (240), 0 states have call successors, (0), 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 16:21:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2024-11-13 16:21:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-13 16:21:31,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:31,978 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:31,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-13 16:21:32,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:32,179 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:21:32,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:32,179 INFO L85 PathProgramCache]: Analyzing trace with hash -22365987, now seen corresponding path program 19 times [2024-11-13 16:21:32,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:32,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730744218] [2024-11-13 16:21:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:32,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 21 proven. 520 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 16:21:33,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:33,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730744218] [2024-11-13 16:21:33,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730744218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:33,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499342137] [2024-11-13 16:21:33,648 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:21:33,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:33,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:33,650 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:33,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 16:21:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:33,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 214 conjuncts are in the unsatisfiable core [2024-11-13 16:21:33,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:34,472 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 16:21:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 21 proven. 520 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 16:21:35,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:35,491 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 20 treesize of output 12 [2024-11-13 16:21:35,610 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 16:21:35,612 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 16:21:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 21 proven. 520 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 16:21:35,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499342137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:35,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:35,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 32, 32] total 62 [2024-11-13 16:21:35,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870900164] [2024-11-13 16:21:35,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:35,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 16:21:35,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:35,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 16:21:35,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=3645, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 16:21:35,775 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand has 62 states, 62 states have (on average 4.0) internal successors, (248), 62 states have internal predecessors, (248), 0 states have call successors, (0), 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 16:21:40,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:40,845 INFO L93 Difference]: Finished difference Result 441 states and 446 transitions. [2024-11-13 16:21:40,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-13 16:21:40,845 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.0) internal successors, (248), 62 states have internal predecessors, (248), 0 states have call successors, (0), 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 151 [2024-11-13 16:21:40,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:40,846 INFO L225 Difference]: With dead ends: 441 [2024-11-13 16:21:40,846 INFO L226 Difference]: Without dead ends: 165 [2024-11-13 16:21:40,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1955 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=438, Invalid=14082, Unknown=0, NotChecked=0, Total=14520 [2024-11-13 16:21:40,847 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 7135 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 7155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 7135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:40,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1617 Invalid, 7155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 7135 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-13 16:21:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-13 16:21:40,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2024-11-13 16:21:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.0251572327044025) internal successors, (163), 160 states have internal predecessors, (163), 0 states have call successors, (0), 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 16:21:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2024-11-13 16:21:40,853 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 151 [2024-11-13 16:21:40,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:40,853 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2024-11-13 16:21:40,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.0) internal successors, (248), 62 states have internal predecessors, (248), 0 states have call successors, (0), 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 16:21:40,853 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2024-11-13 16:21:40,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-13 16:21:40,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:40,854 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:40,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-13 16:21:41,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:41,054 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:21:41,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:41,055 INFO L85 PathProgramCache]: Analyzing trace with hash -939147751, now seen corresponding path program 20 times [2024-11-13 16:21:41,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:41,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723888686] [2024-11-13 16:21:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:41,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 117 proven. 455 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-13 16:21:42,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:42,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723888686] [2024-11-13 16:21:42,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723888686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:42,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931808325] [2024-11-13 16:21:42,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:21:42,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:42,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:42,146 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:42,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-13 16:21:42,488 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:21:42,488 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:42,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-13 16:21:42,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 145 proven. 427 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-13 16:21:43,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:43,874 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 16:21:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 145 proven. 427 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-13 16:21:44,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931808325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:44,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:44,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 55 [2024-11-13 16:21:44,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361037336] [2024-11-13 16:21:44,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:44,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 16:21:44,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:44,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 16:21:44,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=2717, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 16:21:44,191 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand has 56 states, 55 states have (on average 4.709090909090909) internal successors, (259), 56 states have internal predecessors, (259), 0 states have call successors, (0), 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 16:21:45,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:45,268 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2024-11-13 16:21:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 16:21:45,268 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.709090909090909) internal successors, (259), 56 states have internal predecessors, (259), 0 states have call successors, (0), 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 157 [2024-11-13 16:21:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:45,269 INFO L225 Difference]: With dead ends: 170 [2024-11-13 16:21:45,269 INFO L226 Difference]: Without dead ends: 170 [2024-11-13 16:21:45,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 272 SyntacticMatches, 12 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1514 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=404, Invalid=2902, Unknown=0, NotChecked=0, Total=3306 [2024-11-13 16:21:45,270 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 11 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:45,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1173 Invalid, 2294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 16:21:45,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-13 16:21:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2024-11-13 16:21:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 164 states have (on average 1.024390243902439) internal successors, (168), 165 states have internal predecessors, (168), 0 states have call successors, (0), 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 16:21:45,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2024-11-13 16:21:45,271 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 157 [2024-11-13 16:21:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:45,272 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2024-11-13 16:21:45,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.709090909090909) internal successors, (259), 56 states have internal predecessors, (259), 0 states have call successors, (0), 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 16:21:45,272 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2024-11-13 16:21:45,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-13 16:21:45,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:45,273 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:45,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-13 16:21:45,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:45,473 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:21:45,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:45,473 INFO L85 PathProgramCache]: Analyzing trace with hash -577856358, now seen corresponding path program 15 times [2024-11-13 16:21:45,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:45,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232413657] [2024-11-13 16:21:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:45,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 117 proven. 477 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-13 16:21:47,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:47,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232413657] [2024-11-13 16:21:47,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232413657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:47,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537057637] [2024-11-13 16:21:47,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:21:47,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:47,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:47,027 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:47,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-13 16:21:49,679 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-13 16:21:49,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:49,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-13 16:21:49,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 145 proven. 449 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-13 16:21:50,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:51,566 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 16:21:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 145 proven. 449 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-13 16:21:51,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537057637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:51,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:51,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 71 [2024-11-13 16:21:51,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553912912] [2024-11-13 16:21:51,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:51,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-13 16:21:51,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:51,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-13 16:21:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=698, Invalid=4414, Unknown=0, NotChecked=0, Total=5112 [2024-11-13 16:21:51,853 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand has 72 states, 71 states have (on average 4.746478873239437) internal successors, (337), 72 states have internal predecessors, (337), 0 states have call successors, (0), 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 16:21:53,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:53,020 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2024-11-13 16:21:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 16:21:53,020 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 4.746478873239437) internal successors, (337), 72 states have internal predecessors, (337), 0 states have call successors, (0), 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 159 [2024-11-13 16:21:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:53,021 INFO L225 Difference]: With dead ends: 168 [2024-11-13 16:21:53,021 INFO L226 Difference]: Without dead ends: 168 [2024-11-13 16:21:53,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 263 SyntacticMatches, 12 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2962 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=933, Invalid=6039, Unknown=0, NotChecked=0, Total=6972 [2024-11-13 16:21:53,022 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 4 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:53,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 910 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:21:53,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-13 16:21:53,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-13 16:21:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 166 states have (on average 1.0240963855421688) internal successors, (170), 167 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 16:21:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2024-11-13 16:21:53,024 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 159 [2024-11-13 16:21:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:53,024 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions. [2024-11-13 16:21:53,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 4.746478873239437) internal successors, (337), 72 states have internal predecessors, (337), 0 states have call successors, (0), 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 16:21:53,025 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions. [2024-11-13 16:21:53,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-13 16:21:53,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:53,025 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:53,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-13 16:21:53,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-13 16:21:53,226 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:21:53,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:53,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1489100253, now seen corresponding path program 21 times [2024-11-13 16:21:53,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:53,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354893047] [2024-11-13 16:21:53,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:53,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 23 proven. 627 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-13 16:21:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354893047] [2024-11-13 16:21:54,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354893047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347161245] [2024-11-13 16:21:54,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:21:54,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:54,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:54,856 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:54,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-13 16:21:57,189 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-13 16:21:57,189 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:57,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 164 conjuncts are in the unsatisfiable core [2024-11-13 16:21:57,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:57,936 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 16:21:58,680 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 16:21:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 23 proven. 803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:58,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:58,789 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 8 treesize of output 4 [2024-11-13 16:21:59,002 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 16:21:59,004 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 16:21:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 23 proven. 627 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-13 16:21:59,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347161245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:59,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:59,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 43, 32] total 73 [2024-11-13 16:21:59,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711748267] [2024-11-13 16:21:59,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:59,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-13 16:21:59,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:59,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-13 16:21:59,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=5023, Unknown=0, NotChecked=0, Total=5256 [2024-11-13 16:21:59,727 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand has 73 states, 73 states have (on average 4.123287671232877) internal successors, (301), 73 states have internal predecessors, (301), 0 states have call successors, (0), 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 16:22:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:02,005 INFO L93 Difference]: Finished difference Result 298 states and 301 transitions. [2024-11-13 16:22:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-13 16:22:02,005 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.123287671232877) internal successors, (301), 73 states have internal predecessors, (301), 0 states have call successors, (0), 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 164 [2024-11-13 16:22:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:02,006 INFO L225 Difference]: With dead ends: 298 [2024-11-13 16:22:02,006 INFO L226 Difference]: Without dead ends: 173 [2024-11-13 16:22:02,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=283, Invalid=6523, Unknown=0, NotChecked=0, Total=6806 [2024-11-13 16:22:02,007 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 15 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 4923 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 4934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:02,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2256 Invalid, 4934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4923 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 16:22:02,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-13 16:22:02,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2024-11-13 16:22:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 169 states have (on average 1.0236686390532543) internal successors, (173), 170 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 16:22:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2024-11-13 16:22:02,009 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 164 [2024-11-13 16:22:02,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:02,009 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2024-11-13 16:22:02,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.123287671232877) internal successors, (301), 73 states have internal predecessors, (301), 0 states have call successors, (0), 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 16:22:02,010 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2024-11-13 16:22:02,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-13 16:22:02,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:02,010 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:02,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-13 16:22:02,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-11-13 16:22:02,211 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:22:02,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:02,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1093078869, now seen corresponding path program 22 times [2024-11-13 16:22:02,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:02,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790379552] [2024-11-13 16:22:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:02,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 145 proven. 539 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-13 16:22:03,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:03,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790379552] [2024-11-13 16:22:03,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790379552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:03,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063548774] [2024-11-13 16:22:03,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:22:03,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:03,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:03,550 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:03,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 16:22:04,933 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:22:04,933 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:04,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-13 16:22:04,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 176 proven. 508 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-13 16:22:05,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:06,496 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 21 treesize of output 17 [2024-11-13 16:22:07,209 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 176 proven. 508 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-13 16:22:07,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063548774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:07,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:07,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 70 [2024-11-13 16:22:07,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228023527] [2024-11-13 16:22:07,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:07,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-13 16:22:07,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-13 16:22:07,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=671, Invalid=4299, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 16:22:07,212 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand has 71 states, 70 states have (on average 4.6) internal successors, (322), 71 states have internal predecessors, (322), 0 states have call successors, (0), 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 16:22:08,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:08,195 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2024-11-13 16:22:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 16:22:08,195 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 4.6) internal successors, (322), 71 states have internal predecessors, (322), 0 states have call successors, (0), 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 167 [2024-11-13 16:22:08,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:08,196 INFO L225 Difference]: With dead ends: 180 [2024-11-13 16:22:08,196 INFO L226 Difference]: Without dead ends: 180 [2024-11-13 16:22:08,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1798 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=711, Invalid=4401, Unknown=0, NotChecked=0, Total=5112 [2024-11-13 16:22:08,196 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 15 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:08,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 983 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 16:22:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-13 16:22:08,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2024-11-13 16:22:08,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 174 states have (on average 1.0229885057471264) internal successors, (178), 175 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 16:22:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 178 transitions. [2024-11-13 16:22:08,199 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 178 transitions. Word has length 167 [2024-11-13 16:22:08,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:08,199 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 178 transitions. [2024-11-13 16:22:08,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 4.6) internal successors, (322), 71 states have internal predecessors, (322), 0 states have call successors, (0), 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 16:22:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 178 transitions. [2024-11-13 16:22:08,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-13 16:22:08,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:08,200 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:08,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-13 16:22:08,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:08,401 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:22:08,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:08,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1818194218, now seen corresponding path program 16 times [2024-11-13 16:22:08,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:08,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941562090] [2024-11-13 16:22:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:08,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 47 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:12,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:12,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941562090] [2024-11-13 16:22:12,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941562090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:12,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875927133] [2024-11-13 16:22:12,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:22:12,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:12,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:12,111 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:12,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-13 16:22:13,306 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:22:13,306 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:13,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 239 conjuncts are in the unsatisfiable core [2024-11-13 16:22:13,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:14,115 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 16:22:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 47 proven. 627 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:22:15,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:16,173 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 20 treesize of output 12 [2024-11-13 16:22:16,418 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 16:22:16,419 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 16:22:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 47 proven. 627 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:22:17,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875927133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:17,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:17,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 46, 34] total 110 [2024-11-13 16:22:17,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038863000] [2024-11-13 16:22:17,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:17,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-11-13 16:22:17,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:17,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-11-13 16:22:17,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=11615, Unknown=0, NotChecked=0, Total=11990 [2024-11-13 16:22:17,303 INFO L87 Difference]: Start difference. First operand 176 states and 178 transitions. Second operand has 110 states, 110 states have (on average 3.172727272727273) internal successors, (349), 110 states have internal predecessors, (349), 0 states have call successors, (0), 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 16:22:22,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:22,126 INFO L93 Difference]: Finished difference Result 271 states and 273 transitions. [2024-11-13 16:22:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-13 16:22:22,126 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.172727272727273) internal successors, (349), 110 states have internal predecessors, (349), 0 states have call successors, (0), 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 169 [2024-11-13 16:22:22,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:22,127 INFO L225 Difference]: With dead ends: 271 [2024-11-13 16:22:22,127 INFO L226 Difference]: Without dead ends: 183 [2024-11-13 16:22:22,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4346 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=564, Invalid=16728, Unknown=0, NotChecked=0, Total=17292 [2024-11-13 16:22:22,128 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 41 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 8578 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 8600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 8578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:22,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2203 Invalid, 8600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 8578 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 16:22:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-13 16:22:22,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2024-11-13 16:22:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 177 states have (on average 1.0225988700564972) internal successors, (181), 178 states have internal predecessors, (181), 0 states have call successors, (0), 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 16:22:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 181 transitions. [2024-11-13 16:22:22,132 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 181 transitions. Word has length 169 [2024-11-13 16:22:22,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:22,132 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 181 transitions. [2024-11-13 16:22:22,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.172727272727273) internal successors, (349), 110 states have internal predecessors, (349), 0 states have call successors, (0), 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 16:22:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 181 transitions. [2024-11-13 16:22:22,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-13 16:22:22,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:22,133 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:22,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-13 16:22:22,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:22,334 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:22:22,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:22,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1604776224, now seen corresponding path program 17 times [2024-11-13 16:22:22,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:22,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276159215] [2024-11-13 16:22:22,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:22,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 145 proven. 563 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:22:24,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:24,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276159215] [2024-11-13 16:22:24,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276159215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:24,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634700044] [2024-11-13 16:22:24,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:22:24,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:24,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:24,090 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:24,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-13 16:22:25,514 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-13 16:22:25,514 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:25,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-13 16:22:25,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:25,533 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 16:22:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 176 proven. 532 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:22:26,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 176 proven. 532 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:22:28,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634700044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:28,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:28,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 76 [2024-11-13 16:22:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939956400] [2024-11-13 16:22:28,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:28,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-13 16:22:28,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:28,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-13 16:22:28,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=5043, Unknown=0, NotChecked=0, Total=5852 [2024-11-13 16:22:28,340 INFO L87 Difference]: Start difference. First operand 179 states and 181 transitions. Second operand has 77 states, 76 states have (on average 4.276315789473684) internal successors, (325), 77 states have internal predecessors, (325), 0 states have call successors, (0), 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 16:22:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:30,332 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2024-11-13 16:22:30,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-13 16:22:30,332 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 4.276315789473684) internal successors, (325), 77 states have internal predecessors, (325), 0 states have call successors, (0), 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 172 [2024-11-13 16:22:30,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:30,333 INFO L225 Difference]: With dead ends: 181 [2024-11-13 16:22:30,333 INFO L226 Difference]: Without dead ends: 181 [2024-11-13 16:22:30,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2715 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=979, Invalid=7031, Unknown=0, NotChecked=0, Total=8010 [2024-11-13 16:22:30,334 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 2851 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:30,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1338 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2851 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 16:22:30,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-13 16:22:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-13 16:22:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 179 states have (on average 1.0223463687150838) internal successors, (183), 180 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 16:22:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2024-11-13 16:22:30,336 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 172 [2024-11-13 16:22:30,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:30,336 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2024-11-13 16:22:30,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 4.276315789473684) internal successors, (325), 77 states have internal predecessors, (325), 0 states have call successors, (0), 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 16:22:30,336 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2024-11-13 16:22:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-13 16:22:30,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:30,337 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:30,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-13 16:22:30,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-13 16:22:30,537 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:22:30,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:30,538 INFO L85 PathProgramCache]: Analyzing trace with hash 312355741, now seen corresponding path program 23 times [2024-11-13 16:22:30,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:30,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687144500] [2024-11-13 16:22:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:30,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 25 proven. 744 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:22:32,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:32,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687144500] [2024-11-13 16:22:32,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687144500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:32,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489383504] [2024-11-13 16:22:32,307 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:22:32,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:32,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:32,308 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:32,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-13 16:22:34,677 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-13 16:22:34,677 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:34,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 149 conjuncts are in the unsatisfiable core [2024-11-13 16:22:34,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:34,969 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 16:22:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 25 proven. 744 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:22:35,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:35,995 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 16:22:35,997 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 16:22:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 25 proven. 744 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:22:36,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489383504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:36,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:36,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 33] total 66 [2024-11-13 16:22:36,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525242085] [2024-11-13 16:22:36,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:36,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-13 16:22:36,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:36,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-13 16:22:36,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=4114, Unknown=0, NotChecked=0, Total=4290 [2024-11-13 16:22:36,666 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand has 66 states, 66 states have (on average 4.333333333333333) internal successors, (286), 66 states have internal predecessors, (286), 0 states have call successors, (0), 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 16:22:38,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:38,715 INFO L93 Difference]: Finished difference Result 319 states and 322 transitions. [2024-11-13 16:22:38,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-13 16:22:38,716 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.333333333333333) internal successors, (286), 66 states have internal predecessors, (286), 0 states have call successors, (0), 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 177 [2024-11-13 16:22:38,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:38,717 INFO L225 Difference]: With dead ends: 319 [2024-11-13 16:22:38,717 INFO L226 Difference]: Without dead ends: 186 [2024-11-13 16:22:38,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=231, Invalid=5621, Unknown=0, NotChecked=0, Total=5852 [2024-11-13 16:22:38,717 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 14 mSDsluCounter, 3168 mSDsCounter, 0 mSdLazyCounter, 4285 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 4297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:38,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3233 Invalid, 4297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 4285 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 16:22:38,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-13 16:22:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2024-11-13 16:22:38,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 182 states have (on average 1.021978021978022) internal successors, (186), 183 states have internal predecessors, (186), 0 states have call successors, (0), 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 16:22:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 186 transitions. [2024-11-13 16:22:38,719 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 186 transitions. Word has length 177 [2024-11-13 16:22:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:38,719 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 186 transitions. [2024-11-13 16:22:38,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.333333333333333) internal successors, (286), 66 states have internal predecessors, (286), 0 states have call successors, (0), 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 16:22:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 186 transitions. [2024-11-13 16:22:38,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-13 16:22:38,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:38,720 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:38,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-13 16:22:38,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:38,921 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:22:38,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:38,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1118814123, now seen corresponding path program 24 times [2024-11-13 16:22:38,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:38,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763649323] [2024-11-13 16:22:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:38,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 176 proven. 630 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:22:40,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:40,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763649323] [2024-11-13 16:22:40,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763649323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:40,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230258737] [2024-11-13 16:22:40,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:22:40,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:40,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:40,471 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:40,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-13 16:22:47,346 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-13 16:22:47,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:47,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 191 conjuncts are in the unsatisfiable core [2024-11-13 16:22:47,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:48,800 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 16:22:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 25 proven. 991 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:50,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:50,380 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 20 treesize of output 12 [2024-11-13 16:22:51,455 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 16:22:51,460 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 16:22:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 25 proven. 744 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-13 16:22:52,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230258737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:52,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:52,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 52, 36] total 113 [2024-11-13 16:22:52,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990282835] [2024-11-13 16:22:52,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:52,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-11-13 16:22:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:52,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-11-13 16:22:52,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=12291, Unknown=0, NotChecked=0, Total=12656 [2024-11-13 16:22:52,595 INFO L87 Difference]: Start difference. First operand 184 states and 186 transitions. Second operand has 113 states, 113 states have (on average 4.061946902654867) internal successors, (459), 113 states have internal predecessors, (459), 0 states have call successors, (0), 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 16:23:01,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:01,509 INFO L93 Difference]: Finished difference Result 298 states and 301 transitions. [2024-11-13 16:23:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-13 16:23:01,510 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 4.061946902654867) internal successors, (459), 113 states have internal predecessors, (459), 0 states have call successors, (0), 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 180 [2024-11-13 16:23:01,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:01,510 INFO L225 Difference]: With dead ends: 298 [2024-11-13 16:23:01,510 INFO L226 Difference]: Without dead ends: 203 [2024-11-13 16:23:01,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7030 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=962, Invalid=34948, Unknown=0, NotChecked=0, Total=35910 [2024-11-13 16:23:01,513 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 43 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 11389 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 11401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 11389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:01,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2197 Invalid, 11401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 11389 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 16:23:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-13 16:23:01,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 192. [2024-11-13 16:23:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 190 states have (on average 1.0210526315789474) internal successors, (194), 191 states have internal predecessors, (194), 0 states have call successors, (0), 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 16:23:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 194 transitions. [2024-11-13 16:23:01,516 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 194 transitions. Word has length 180 [2024-11-13 16:23:01,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:01,516 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 194 transitions. [2024-11-13 16:23:01,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 4.061946902654867) internal successors, (459), 113 states have internal predecessors, (459), 0 states have call successors, (0), 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 16:23:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 194 transitions. [2024-11-13 16:23:01,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-13 16:23:01,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:01,518 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:01,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-13 16:23:01,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:01,718 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:23:01,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:01,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1819801946, now seen corresponding path program 18 times [2024-11-13 16:23:01,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:01,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770361594] [2024-11-13 16:23:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:01,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 176 proven. 656 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-13 16:23:03,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:23:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770361594] [2024-11-13 16:23:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770361594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220605408] [2024-11-13 16:23:03,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:23:03,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:03,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:03,408 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:03,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-13 16:23:11,379 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-13 16:23:11,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:23:11,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-13 16:23:11,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:11,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-13 16:23:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 210 proven. 622 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-13 16:23:12,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 210 proven. 622 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-13 16:23:14,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220605408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:23:14,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:23:14,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 95 [2024-11-13 16:23:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909633029] [2024-11-13 16:23:14,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:14,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-13 16:23:14,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:14,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-13 16:23:14,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1210, Invalid=7910, Unknown=0, NotChecked=0, Total=9120 [2024-11-13 16:23:14,475 INFO L87 Difference]: Start difference. First operand 192 states and 194 transitions. Second operand has 96 states, 95 states have (on average 4.568421052631579) internal successors, (434), 96 states have internal predecessors, (434), 0 states have call successors, (0), 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 16:23:16,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:16,042 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2024-11-13 16:23:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-13 16:23:16,043 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.568421052631579) internal successors, (434), 96 states have internal predecessors, (434), 0 states have call successors, (0), 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 185 [2024-11-13 16:23:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:16,043 INFO L225 Difference]: With dead ends: 194 [2024-11-13 16:23:16,043 INFO L226 Difference]: Without dead ends: 194 [2024-11-13 16:23:16,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4284 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1527, Invalid=10463, Unknown=0, NotChecked=0, Total=11990 [2024-11-13 16:23:16,044 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 2 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:16,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1007 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 16:23:16,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-13 16:23:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-13 16:23:16,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 193 states have internal predecessors, (196), 0 states have call successors, (0), 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 16:23:16,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 196 transitions. [2024-11-13 16:23:16,048 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 196 transitions. Word has length 185 [2024-11-13 16:23:16,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:16,048 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 196 transitions. [2024-11-13 16:23:16,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.568421052631579) internal successors, (434), 96 states have internal predecessors, (434), 0 states have call successors, (0), 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 16:23:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 196 transitions. [2024-11-13 16:23:16,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-13 16:23:16,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:16,049 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:16,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-13 16:23:16,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2024-11-13 16:23:16,250 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:23:16,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:16,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1198570851, now seen corresponding path program 25 times [2024-11-13 16:23:16,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:16,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698590235] [2024-11-13 16:23:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:16,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 27 proven. 871 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-13 16:23:18,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:23:18,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698590235] [2024-11-13 16:23:18,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698590235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:18,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601108959] [2024-11-13 16:23:18,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:23:18,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:18,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:18,234 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:18,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-13 16:23:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:18,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 268 conjuncts are in the unsatisfiable core [2024-11-13 16:23:18,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:19,301 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 16:23:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 27 proven. 871 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-13 16:23:20,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:20,731 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 20 treesize of output 12 [2024-11-13 16:23:20,875 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 16:23:20,876 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 16:23:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 27 proven. 871 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-13 16:23:21,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601108959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:23:21,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:23:21,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 38, 38] total 74 [2024-11-13 16:23:21,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558198507] [2024-11-13 16:23:21,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:21,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-13 16:23:21,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:21,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-13 16:23:21,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=5241, Unknown=0, NotChecked=0, Total=5402 [2024-11-13 16:23:21,072 INFO L87 Difference]: Start difference. First operand 194 states and 196 transitions. Second operand has 74 states, 74 states have (on average 4.162162162162162) internal successors, (308), 74 states have internal predecessors, (308), 0 states have call successors, (0), 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 16:23:28,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:28,369 INFO L93 Difference]: Finished difference Result 552 states and 557 transitions. [2024-11-13 16:23:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-11-13 16:23:28,370 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.162162162162162) internal successors, (308), 74 states have internal predecessors, (308), 0 states have call successors, (0), 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 190 [2024-11-13 16:23:28,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:28,371 INFO L225 Difference]: With dead ends: 552 [2024-11-13 16:23:28,371 INFO L226 Difference]: Without dead ends: 204 [2024-11-13 16:23:28,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2996 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=534, Invalid=21222, Unknown=0, NotChecked=0, Total=21756 [2024-11-13 16:23:28,371 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 38 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 10463 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 10489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 10463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:28,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2269 Invalid, 10489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 10463 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-13 16:23:28,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-13 16:23:28,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2024-11-13 16:23:28,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 198 states have (on average 1.02020202020202) internal successors, (202), 199 states have internal predecessors, (202), 0 states have call successors, (0), 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 16:23:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions. [2024-11-13 16:23:28,375 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 190 [2024-11-13 16:23:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:28,375 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 202 transitions. [2024-11-13 16:23:28,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.162162162162162) internal successors, (308), 74 states have internal predecessors, (308), 0 states have call successors, (0), 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 16:23:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions. [2024-11-13 16:23:28,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-13 16:23:28,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:28,376 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:28,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-13 16:23:28,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2024-11-13 16:23:28,576 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:23:28,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:28,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1225105633, now seen corresponding path program 26 times [2024-11-13 16:23:28,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:28,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002379653] [2024-11-13 16:23:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:28,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 210 proven. 728 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-13 16:23:30,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:23:30,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002379653] [2024-11-13 16:23:30,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002379653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:30,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28034319] [2024-11-13 16:23:30,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:23:30,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:30,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:30,250 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:30,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-13 16:23:30,708 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:23:30,708 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:23:30,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 137 conjuncts are in the unsatisfiable core [2024-11-13 16:23:30,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:31,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 247 proven. 691 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-13 16:23:31,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:32,530 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 16:23:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 247 proven. 691 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-13 16:23:32,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28034319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:23:32,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:23:32,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 33] total 67 [2024-11-13 16:23:32,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632258594] [2024-11-13 16:23:32,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:32,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-13 16:23:32,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:32,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-13 16:23:32,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=4019, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 16:23:32,980 INFO L87 Difference]: Start difference. First operand 200 states and 202 transitions. Second operand has 68 states, 67 states have (on average 4.7611940298507465) internal successors, (319), 68 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 16:23:34,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:34,571 INFO L93 Difference]: Finished difference Result 209 states and 211 transitions. [2024-11-13 16:23:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 16:23:34,571 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 4.7611940298507465) internal successors, (319), 68 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) Word has length 196 [2024-11-13 16:23:34,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:34,572 INFO L225 Difference]: With dead ends: 209 [2024-11-13 16:23:34,572 INFO L226 Difference]: Without dead ends: 209 [2024-11-13 16:23:34,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 341 SyntacticMatches, 15 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=587, Invalid=4243, Unknown=0, NotChecked=0, Total=4830 [2024-11-13 16:23:34,573 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 11 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 3406 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 3407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:34,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1615 Invalid, 3407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3406 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 16:23:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-13 16:23:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2024-11-13 16:23:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 203 states have (on average 1.019704433497537) internal successors, (207), 204 states have internal predecessors, (207), 0 states have call successors, (0), 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 16:23:34,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2024-11-13 16:23:34,576 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 196 [2024-11-13 16:23:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:34,577 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2024-11-13 16:23:34,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 4.7611940298507465) internal successors, (319), 68 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 16:23:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2024-11-13 16:23:34,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-13 16:23:34,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:34,578 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:34,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-13 16:23:34,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2024-11-13 16:23:34,779 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:23:34,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash -505474016, now seen corresponding path program 19 times [2024-11-13 16:23:34,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:34,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565607590] [2024-11-13 16:23:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:34,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1253 backedges. 210 proven. 756 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-13 16:23:36,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:23:36,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565607590] [2024-11-13 16:23:36,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565607590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:36,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263776124] [2024-11-13 16:23:36,743 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:23:36,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:36,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:36,746 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:36,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-13 16:23:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:37,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 141 conjuncts are in the unsatisfiable core [2024-11-13 16:23:37,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1253 backedges. 247 proven. 719 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-13 16:23:38,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:39,195 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 16:23:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1253 backedges. 247 proven. 719 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-13 16:23:39,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263776124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:23:39,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:23:39,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 71 [2024-11-13 16:23:39,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833286807] [2024-11-13 16:23:39,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:39,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-13 16:23:39,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:39,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-13 16:23:39,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=4535, Unknown=0, NotChecked=0, Total=5112 [2024-11-13 16:23:39,661 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand has 72 states, 71 states have (on average 4.507042253521127) internal successors, (320), 72 states have internal predecessors, (320), 0 states have call successors, (0), 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 16:23:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:41,554 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2024-11-13 16:23:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-13 16:23:41,555 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 4.507042253521127) internal successors, (320), 72 states have internal predecessors, (320), 0 states have call successors, (0), 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 198 [2024-11-13 16:23:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:41,556 INFO L225 Difference]: With dead ends: 207 [2024-11-13 16:23:41,556 INFO L226 Difference]: Without dead ends: 207 [2024-11-13 16:23:41,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 344 SyntacticMatches, 15 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3177 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=773, Invalid=6709, Unknown=0, NotChecked=0, Total=7482 [2024-11-13 16:23:41,557 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 4 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:41,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1265 Invalid, 3049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3049 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 16:23:41,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-13 16:23:41,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-13 16:23:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 205 states have (on average 1.0195121951219512) internal successors, (209), 206 states have internal predecessors, (209), 0 states have call successors, (0), 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 16:23:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2024-11-13 16:23:41,560 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 198 [2024-11-13 16:23:41,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:41,560 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2024-11-13 16:23:41,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 4.507042253521127) internal successors, (320), 72 states have internal predecessors, (320), 0 states have call successors, (0), 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 16:23:41,560 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2024-11-13 16:23:41,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-13 16:23:41,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:41,561 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:41,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-13 16:23:41,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2024-11-13 16:23:41,762 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:23:41,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash -901157283, now seen corresponding path program 27 times [2024-11-13 16:23:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:41,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245431923] [2024-11-13 16:23:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:41,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1324 backedges. 29 proven. 1008 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-13 16:23:44,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:23:44,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245431923] [2024-11-13 16:23:44,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245431923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:44,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002417056] [2024-11-13 16:23:44,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:23:44,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:44,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:44,109 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:44,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-13 16:23:47,274 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-13 16:23:47,274 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:23:47,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 268 conjuncts are in the unsatisfiable core [2024-11-13 16:23:47,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:49,386 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 16:23:52,066 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 16:23:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1324 backedges. 29 proven. 1295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:52,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:52,300 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 8 treesize of output 4 [2024-11-13 16:23:52,587 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 16:23:52,589 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 16:23:53,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1324 backedges. 29 proven. 1048 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-13 16:23:53,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002417056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:23:53,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:23:53,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 70, 40] total 126 [2024-11-13 16:23:53,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967962744] [2024-11-13 16:23:53,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:53,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-11-13 16:23:53,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:53,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-11-13 16:23:53,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=15268, Unknown=0, NotChecked=0, Total=15750 [2024-11-13 16:23:53,927 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand has 126 states, 126 states have (on average 3.357142857142857) internal successors, (423), 126 states have internal predecessors, (423), 0 states have call successors, (0), 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 16:23:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:58,907 INFO L93 Difference]: Finished difference Result 370 states and 374 transitions. [2024-11-13 16:23:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-13 16:23:58,907 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 3.357142857142857) internal successors, (423), 126 states have internal predecessors, (423), 0 states have call successors, (0), 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 203 [2024-11-13 16:23:58,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:58,908 INFO L225 Difference]: With dead ends: 370 [2024-11-13 16:23:58,908 INFO L226 Difference]: Without dead ends: 212 [2024-11-13 16:23:58,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5022 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=560, Invalid=18622, Unknown=0, NotChecked=0, Total=19182 [2024-11-13 16:23:58,909 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 24 mSDsluCounter, 3302 mSDsCounter, 0 mSdLazyCounter, 11141 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 11156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:58,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3354 Invalid, 11156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11141 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-13 16:23:58,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-13 16:23:58,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2024-11-13 16:23:58,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 208 states have (on average 1.0192307692307692) internal successors, (212), 209 states have internal predecessors, (212), 0 states have call successors, (0), 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 16:23:58,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 212 transitions. [2024-11-13 16:23:58,912 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 212 transitions. Word has length 203 [2024-11-13 16:23:58,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:58,912 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 212 transitions. [2024-11-13 16:23:58,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 3.357142857142857) internal successors, (423), 126 states have internal predecessors, (423), 0 states have call successors, (0), 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 16:23:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 212 transitions. [2024-11-13 16:23:58,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-13 16:23:58,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:58,913 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:58,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-13 16:23:59,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:59,113 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:23:59,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 389606635, now seen corresponding path program 28 times [2024-11-13 16:23:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:59,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178304824] [2024-11-13 16:23:59,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:59,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1367 backedges. 247 proven. 833 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-13 16:24:01,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:01,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178304824] [2024-11-13 16:24:01,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178304824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:01,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023383490] [2024-11-13 16:24:01,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:24:01,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:01,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:01,061 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:01,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-13 16:24:02,118 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:24:02,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:02,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 148 conjuncts are in the unsatisfiable core [2024-11-13 16:24:02,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1367 backedges. 287 proven. 793 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-13 16:24:03,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:04,215 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 21 treesize of output 17 [2024-11-13 16:24:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1367 backedges. 287 proven. 793 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-13 16:24:05,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023383490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:05,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:05,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 85 [2024-11-13 16:24:05,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804460901] [2024-11-13 16:24:05,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:05,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-13 16:24:05,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:05,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-13 16:24:05,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=989, Invalid=6321, Unknown=0, NotChecked=0, Total=7310 [2024-11-13 16:24:05,212 INFO L87 Difference]: Start difference. First operand 210 states and 212 transitions. Second operand has 86 states, 85 states have (on average 4.6) internal successors, (391), 86 states have internal predecessors, (391), 0 states have call successors, (0), 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 16:24:06,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:24:06,983 INFO L93 Difference]: Finished difference Result 219 states and 221 transitions. [2024-11-13 16:24:06,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 16:24:06,984 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 4.6) internal successors, (391), 86 states have internal predecessors, (391), 0 states have call successors, (0), 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 206 [2024-11-13 16:24:06,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:24:06,984 INFO L225 Difference]: With dead ends: 219 [2024-11-13 16:24:06,984 INFO L226 Difference]: Without dead ends: 219 [2024-11-13 16:24:06,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2746 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1038, Invalid=6444, Unknown=0, NotChecked=0, Total=7482 [2024-11-13 16:24:06,985 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 13 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 3576 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:24:06,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1750 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3576 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 16:24:06,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-13 16:24:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-11-13 16:24:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 213 states have (on average 1.0187793427230047) internal successors, (217), 214 states have internal predecessors, (217), 0 states have call successors, (0), 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 16:24:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2024-11-13 16:24:06,989 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 206 [2024-11-13 16:24:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:24:06,989 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2024-11-13 16:24:06,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 4.6) internal successors, (391), 86 states have internal predecessors, (391), 0 states have call successors, (0), 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 16:24:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2024-11-13 16:24:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-13 16:24:06,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:24:06,991 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:07,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-13 16:24:07,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:07,191 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:24:07,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:07,191 INFO L85 PathProgramCache]: Analyzing trace with hash 749821676, now seen corresponding path program 20 times [2024-11-13 16:24:07,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:07,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186892479] [2024-11-13 16:24:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:07,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 59 proven. 1338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:12,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:12,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186892479] [2024-11-13 16:24:12,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186892479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:12,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620637252] [2024-11-13 16:24:12,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:24:12,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:12,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:12,351 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:12,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-13 16:24:12,848 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:24:12,848 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:12,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 286 conjuncts are in the unsatisfiable core [2024-11-13 16:24:12,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:14,000 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 16:24:17,115 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:24:17,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:17,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 10 [2024-11-13 16:24:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 59 proven. 1008 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-13 16:24:17,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:17,384 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 20 treesize of output 12 [2024-11-13 16:24:17,942 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 16:24:17,945 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 24 treesize of output 20 [2024-11-13 16:24:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 59 proven. 1008 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-13 16:24:20,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620637252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:20,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:20,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 42, 42] total 118 [2024-11-13 16:24:20,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344230338] [2024-11-13 16:24:20,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:20,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2024-11-13 16:24:20,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2024-11-13 16:24:20,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=13383, Unknown=0, NotChecked=0, Total=13806 [2024-11-13 16:24:20,262 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand has 118 states, 118 states have (on average 3.559322033898305) internal successors, (420), 118 states have internal predecessors, (420), 0 states have call successors, (0), 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 16:24:27,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:24:27,822 INFO L93 Difference]: Finished difference Result 331 states and 333 transitions. [2024-11-13 16:24:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-13 16:24:27,822 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 3.559322033898305) internal successors, (420), 118 states have internal predecessors, (420), 0 states have call successors, (0), 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 208 [2024-11-13 16:24:27,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:24:27,823 INFO L225 Difference]: With dead ends: 331 [2024-11-13 16:24:27,824 INFO L226 Difference]: Without dead ends: 222 [2024-11-13 16:24:27,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 368 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4635 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=680, Invalid=21076, Unknown=0, NotChecked=0, Total=21756 [2024-11-13 16:24:27,825 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 39 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 9763 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3454 SdHoareTripleChecker+Invalid, 9778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 9763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:24:27,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3454 Invalid, 9778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 9763 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-13 16:24:27,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-13 16:24:27,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 218. [2024-11-13 16:24:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 216 states have (on average 1.0185185185185186) internal successors, (220), 217 states have internal predecessors, (220), 0 states have call successors, (0), 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 16:24:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 220 transitions. [2024-11-13 16:24:27,827 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 220 transitions. Word has length 208 [2024-11-13 16:24:27,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:24:27,828 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 220 transitions. [2024-11-13 16:24:27,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 3.559322033898305) internal successors, (420), 118 states have internal predecessors, (420), 0 states have call successors, (0), 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 16:24:27,828 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 220 transitions. [2024-11-13 16:24:27,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-13 16:24:27,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:24:27,828 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:27,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-13 16:24:28,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-11-13 16:24:28,029 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:24:28,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:28,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1453316582, now seen corresponding path program 21 times [2024-11-13 16:24:28,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:28,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209109123] [2024-11-13 16:24:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:28,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1440 backedges. 247 proven. 863 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-13 16:24:30,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:30,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209109123] [2024-11-13 16:24:30,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209109123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:30,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378119726] [2024-11-13 16:24:30,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:24:30,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:30,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:30,742 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:30,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-13 16:24:36,845 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-13 16:24:36,845 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:36,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-13 16:24:36,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:36,866 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 16:24:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1440 backedges. 287 proven. 823 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-13 16:24:38,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1440 backedges. 287 proven. 823 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-13 16:24:41,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378119726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:41,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:41,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 107 [2024-11-13 16:24:41,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804454964] [2024-11-13 16:24:41,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:41,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-11-13 16:24:41,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:41,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-11-13 16:24:41,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1552, Invalid=10004, Unknown=0, NotChecked=0, Total=11556 [2024-11-13 16:24:41,037 INFO L87 Difference]: Start difference. First operand 218 states and 220 transitions. Second operand has 108 states, 107 states have (on average 4.616822429906542) internal successors, (494), 108 states have internal predecessors, (494), 0 states have call successors, (0), 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 16:24:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:24:43,219 INFO L93 Difference]: Finished difference Result 220 states and 222 transitions. [2024-11-13 16:24:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 16:24:43,219 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 4.616822429906542) internal successors, (494), 108 states have internal predecessors, (494), 0 states have call successors, (0), 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 211 [2024-11-13 16:24:43,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:24:43,220 INFO L225 Difference]: With dead ends: 220 [2024-11-13 16:24:43,220 INFO L226 Difference]: Without dead ends: 220 [2024-11-13 16:24:43,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5421 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1947, Invalid=13305, Unknown=0, NotChecked=0, Total=15252 [2024-11-13 16:24:43,221 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 2 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:24:43,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1304 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2664 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 16:24:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-13 16:24:43,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-11-13 16:24:43,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 218 states have (on average 1.018348623853211) internal successors, (222), 219 states have internal predecessors, (222), 0 states have call successors, (0), 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 16:24:43,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 222 transitions. [2024-11-13 16:24:43,224 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 222 transitions. Word has length 211 [2024-11-13 16:24:43,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:24:43,224 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 222 transitions. [2024-11-13 16:24:43,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 4.616822429906542) internal successors, (494), 108 states have internal predecessors, (494), 0 states have call successors, (0), 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 16:24:43,225 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 222 transitions. [2024-11-13 16:24:43,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-13 16:24:43,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:24:43,226 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:43,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-13 16:24:43,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-11-13 16:24:43,427 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:24:43,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash 946243747, now seen corresponding path program 29 times [2024-11-13 16:24:43,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:43,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343315670] [2024-11-13 16:24:43,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:43,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 31 proven. 1155 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-13 16:24:46,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:46,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343315670] [2024-11-13 16:24:46,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343315670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:46,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666176881] [2024-11-13 16:24:46,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:24:46,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:46,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:46,471 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:46,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-13 16:24:51,269 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-13 16:24:51,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:51,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 346 conjuncts are in the unsatisfiable core [2024-11-13 16:24:51,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:52,423 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 16:24:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 31 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:55,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:55,781 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 20 treesize of output 12 [2024-11-13 16:24:57,464 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 16:24:57,468 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 16:24:59,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 31 proven. 1155 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-13 16:24:59,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666176881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:59,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:59,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 73, 42] total 132 [2024-11-13 16:24:59,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819106072] [2024-11-13 16:24:59,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:59,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2024-11-13 16:24:59,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:59,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2024-11-13 16:24:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=16924, Unknown=0, NotChecked=0, Total=17292 [2024-11-13 16:24:59,114 INFO L87 Difference]: Start difference. First operand 220 states and 222 transitions. Second operand has 132 states, 132 states have (on average 3.8333333333333335) internal successors, (506), 132 states have internal predecessors, (506), 0 states have call successors, (0), 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 16:25:12,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:25:12,604 INFO L93 Difference]: Finished difference Result 627 states and 632 transitions. [2024-11-13 16:25:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2024-11-13 16:25:12,604 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 3.8333333333333335) internal successors, (506), 132 states have internal predecessors, (506), 0 states have call successors, (0), 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 216 [2024-11-13 16:25:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:25:12,605 INFO L225 Difference]: With dead ends: 627 [2024-11-13 16:25:12,605 INFO L226 Difference]: Without dead ends: 230 [2024-11-13 16:25:12,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6935 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=958, Invalid=45914, Unknown=0, NotChecked=0, Total=46872 [2024-11-13 16:25:12,607 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 52 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 16058 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3120 SdHoareTripleChecker+Invalid, 16088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 16058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:25:12,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3120 Invalid, 16088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 16058 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-13 16:25:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-13 16:25:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 226. [2024-11-13 16:25:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 224 states have (on average 1.0178571428571428) internal successors, (228), 225 states have internal predecessors, (228), 0 states have call successors, (0), 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 16:25:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 228 transitions. [2024-11-13 16:25:12,611 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 228 transitions. Word has length 216 [2024-11-13 16:25:12,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:25:12,611 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 228 transitions. [2024-11-13 16:25:12,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 3.8333333333333335) internal successors, (506), 132 states have internal predecessors, (506), 0 states have call successors, (0), 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 16:25:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 228 transitions. [2024-11-13 16:25:12,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-13 16:25:12,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:25:12,613 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:25:12,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-13 16:25:12,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable80 [2024-11-13 16:25:12,813 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:25:12,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:25:12,814 INFO L85 PathProgramCache]: Analyzing trace with hash -434707361, now seen corresponding path program 30 times [2024-11-13 16:25:12,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:25:12,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073519975] [2024-11-13 16:25:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:25:12,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:25:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1608 backedges. 287 proven. 945 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:25:14,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:25:14,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073519975] [2024-11-13 16:25:14,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073519975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:25:14,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529968276] [2024-11-13 16:25:14,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:25:14,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:14,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:25:14,891 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:25:14,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-13 16:25:38,143 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-13 16:25:38,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:25:38,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-13 16:25:38,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:25:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1608 backedges. 330 proven. 902 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:25:39,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:25:41,141 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 16:25:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1608 backedges. 330 proven. 902 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:25:41,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529968276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:25:41,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:25:41,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37, 37] total 91 [2024-11-13 16:25:41,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525312400] [2024-11-13 16:25:41,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:25:41,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-13 16:25:41,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:25:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-13 16:25:41,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1266, Invalid=7106, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 16:25:41,734 INFO L87 Difference]: Start difference. First operand 226 states and 228 transitions. Second operand has 92 states, 91 states have (on average 5.131868131868132) internal successors, (467), 92 states have internal predecessors, (467), 0 states have call successors, (0), 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 16:25:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:25:42,931 INFO L93 Difference]: Finished difference Result 235 states and 237 transitions. [2024-11-13 16:25:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 16:25:42,932 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 5.131868131868132) internal successors, (467), 92 states have internal predecessors, (467), 0 states have call successors, (0), 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 222 [2024-11-13 16:25:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:25:42,933 INFO L225 Difference]: With dead ends: 235 [2024-11-13 16:25:42,933 INFO L226 Difference]: Without dead ends: 235 [2024-11-13 16:25:42,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 371 SyntacticMatches, 17 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4320 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1301, Invalid=7255, Unknown=0, NotChecked=0, Total=8556 [2024-11-13 16:25:42,933 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 9 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:25:42,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1251 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 16:25:42,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-13 16:25:42,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2024-11-13 16:25:42,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 229 states have (on average 1.017467248908297) internal successors, (233), 230 states have internal predecessors, (233), 0 states have call successors, (0), 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 16:25:42,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2024-11-13 16:25:42,935 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 222 [2024-11-13 16:25:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:25:42,936 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 233 transitions. [2024-11-13 16:25:42,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 5.131868131868132) internal successors, (467), 92 states have internal predecessors, (467), 0 states have call successors, (0), 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 16:25:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 233 transitions. [2024-11-13 16:25:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-13 16:25:42,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:25:42,937 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:25:42,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-13 16:25:43,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:43,137 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:25:43,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:25:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1141946016, now seen corresponding path program 22 times [2024-11-13 16:25:43,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:25:43,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984163574] [2024-11-13 16:25:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:25:43,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:25:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 287 proven. 977 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:25:45,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:25:45,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984163574] [2024-11-13 16:25:45,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984163574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:25:45,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788729466] [2024-11-13 16:25:45,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:25:45,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:45,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:25:45,345 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:25:45,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-13 16:25:47,742 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:25:47,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:25:47,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 164 conjuncts are in the unsatisfiable core [2024-11-13 16:25:47,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:25:47,760 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 16:25:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 330 proven. 934 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:25:48,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:25:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 330 proven. 934 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:25:52,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788729466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:25:52,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:25:52,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 96 [2024-11-13 16:25:52,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429398815] [2024-11-13 16:25:52,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:25:52,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-13 16:25:52,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:25:52,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-13 16:25:52,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1284, Invalid=8028, Unknown=0, NotChecked=0, Total=9312 [2024-11-13 16:25:52,070 INFO L87 Difference]: Start difference. First operand 231 states and 233 transitions. Second operand has 97 states, 96 states have (on average 4.34375) internal successors, (417), 97 states have internal predecessors, (417), 0 states have call successors, (0), 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 16:25:54,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:25:54,853 INFO L93 Difference]: Finished difference Result 233 states and 235 transitions. [2024-11-13 16:25:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 16:25:54,854 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 4.34375) internal successors, (417), 97 states have internal predecessors, (417), 0 states have call successors, (0), 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 224 [2024-11-13 16:25:54,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:25:54,854 INFO L225 Difference]: With dead ends: 233 [2024-11-13 16:25:54,855 INFO L226 Difference]: Without dead ends: 233 [2024-11-13 16:25:54,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4556 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1540, Invalid=11342, Unknown=0, NotChecked=0, Total=12882 [2024-11-13 16:25:54,855 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 2 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 4068 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 4068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:25:54,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1799 Invalid, 4068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4068 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 16:25:54,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-13 16:25:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-11-13 16:25:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 231 states have (on average 1.0173160173160174) internal successors, (235), 232 states have internal predecessors, (235), 0 states have call successors, (0), 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 16:25:54,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2024-11-13 16:25:54,858 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 224 [2024-11-13 16:25:54,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:25:54,859 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2024-11-13 16:25:54,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 4.34375) internal successors, (417), 97 states have internal predecessors, (417), 0 states have call successors, (0), 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 16:25:54,859 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2024-11-13 16:25:54,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-13 16:25:54,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:25:54,860 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:25:54,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-13 16:25:55,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:55,064 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:25:55,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:25:55,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1740078819, now seen corresponding path program 31 times [2024-11-13 16:25:55,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:25:55,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013769531] [2024-11-13 16:25:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:25:55,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:25:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 33 proven. 1312 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:25:57,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:25:57,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013769531] [2024-11-13 16:25:57,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013769531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:25:57,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089620026] [2024-11-13 16:25:57,656 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:25:57,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:57,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:25:57,658 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:25:57,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-13 16:25:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:58,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 180 conjuncts are in the unsatisfiable core [2024-11-13 16:25:58,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:25:59,090 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 16:25:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 33 proven. 1312 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:25:59,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:25:59,629 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 16:25:59,632 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 16:25:59,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 33 proven. 1312 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:25:59,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089620026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:25:59,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:25:59,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 64 [2024-11-13 16:25:59,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099046896] [2024-11-13 16:25:59,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:25:59,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-13 16:25:59,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:25:59,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-13 16:25:59,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3872, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 16:25:59,881 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand has 64 states, 64 states have (on average 3.9375) internal successors, (252), 64 states have internal predecessors, (252), 0 states have call successors, (0), 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 16:26:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:26:02,547 INFO L93 Difference]: Finished difference Result 411 states and 414 transitions. [2024-11-13 16:26:02,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-13 16:26:02,547 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.9375) internal successors, (252), 64 states have internal predecessors, (252), 0 states have call successors, (0), 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 229 [2024-11-13 16:26:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:26:02,548 INFO L225 Difference]: With dead ends: 411 [2024-11-13 16:26:02,548 INFO L226 Difference]: Without dead ends: 238 [2024-11-13 16:26:02,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=245, Invalid=6075, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 16:26:02,549 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 22 mSDsluCounter, 3545 mSDsCounter, 0 mSdLazyCounter, 4920 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3626 SdHoareTripleChecker+Invalid, 4936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:26:02,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3626 Invalid, 4936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4920 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 16:26:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-13 16:26:02,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2024-11-13 16:26:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 234 states have (on average 1.017094017094017) internal successors, (238), 235 states have internal predecessors, (238), 0 states have call successors, (0), 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 16:26:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 238 transitions. [2024-11-13 16:26:02,553 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 238 transitions. Word has length 229 [2024-11-13 16:26:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:26:02,553 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 238 transitions. [2024-11-13 16:26:02,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.9375) internal successors, (252), 64 states have internal predecessors, (252), 0 states have call successors, (0), 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 16:26:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 238 transitions. [2024-11-13 16:26:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-13 16:26:02,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:26:02,555 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:26:02,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-13 16:26:02,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:02,755 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:26:02,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:26:02,756 INFO L85 PathProgramCache]: Analyzing trace with hash 967690795, now seen corresponding path program 32 times [2024-11-13 16:26:02,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:26:02,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807028412] [2024-11-13 16:26:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:02,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:26:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 330 proven. 1064 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:26:05,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:26:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807028412] [2024-11-13 16:26:05,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807028412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:26:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966433716] [2024-11-13 16:26:05,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:26:05,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:05,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:26:05,100 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:26:05,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-13 16:26:05,637 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:26:05,637 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:26:05,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 164 conjuncts are in the unsatisfiable core [2024-11-13 16:26:05,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:26:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 376 proven. 1018 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:26:06,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:26:08,447 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 16:26:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 376 proven. 1018 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:26:09,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966433716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:26:09,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:26:09,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39, 39] total 79 [2024-11-13 16:26:09,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550896611] [2024-11-13 16:26:09,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:26:09,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-13 16:26:09,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:26:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-13 16:26:09,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=747, Invalid=5573, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 16:26:09,139 INFO L87 Difference]: Start difference. First operand 236 states and 238 transitions. Second operand has 80 states, 79 states have (on average 4.7974683544303796) internal successors, (379), 80 states have internal predecessors, (379), 0 states have call successors, (0), 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 16:26:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:26:11,464 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2024-11-13 16:26:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 16:26:11,464 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 4.7974683544303796) internal successors, (379), 80 states have internal predecessors, (379), 0 states have call successors, (0), 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 232 [2024-11-13 16:26:11,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:26:11,465 INFO L225 Difference]: With dead ends: 245 [2024-11-13 16:26:11,465 INFO L226 Difference]: Without dead ends: 245 [2024-11-13 16:26:11,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 404 SyntacticMatches, 18 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3368 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=806, Invalid=5836, Unknown=0, NotChecked=0, Total=6642 [2024-11-13 16:26:11,466 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 9 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 3915 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 3916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:26:11,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1833 Invalid, 3916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3915 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 16:26:11,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-13 16:26:11,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 241. [2024-11-13 16:26:11,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 239 states have (on average 1.0167364016736402) internal successors, (243), 240 states have internal predecessors, (243), 0 states have call successors, (0), 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 16:26:11,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2024-11-13 16:26:11,469 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 232 [2024-11-13 16:26:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:26:11,469 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2024-11-13 16:26:11,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 4.7974683544303796) internal successors, (379), 80 states have internal predecessors, (379), 0 states have call successors, (0), 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 16:26:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2024-11-13 16:26:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-13 16:26:11,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:26:11,471 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:26:11,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-13 16:26:11,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:11,671 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:26:11,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:26:11,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2057049044, now seen corresponding path program 23 times [2024-11-13 16:26:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:26:11,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345132425] [2024-11-13 16:26:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:11,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:26:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1804 backedges. 67 proven. 1737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:26:17,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:26:17,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345132425] [2024-11-13 16:26:17,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345132425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:26:17,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655405518] [2024-11-13 16:26:17,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:26:17,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:17,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:26:17,912 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:26:17,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-13 16:26:22,842 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-13 16:26:22,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:26:22,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 368 conjuncts are in the unsatisfiable core [2024-11-13 16:26:22,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:26:22,870 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 16:26:24,328 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 15 treesize of output 1 [2024-11-13 16:26:26,274 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 16:26:26,408 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 16:26:35,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:26:35,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 15 [2024-11-13 16:26:36,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:26:36,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:26:36,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 22 [2024-11-13 16:26:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1804 backedges. 330 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:26:36,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:26:47,365 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 22 treesize of output 20 [2024-11-13 16:26:47,372 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 34 treesize of output 30 [2024-11-13 16:26:54,416 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 20 treesize of output 18 [2024-11-13 16:26:54,419 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 77 treesize of output 69 [2024-11-13 16:26:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1804 backedges. 330 proven. 1098 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-13 16:26:55,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655405518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:26:55,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:26:55,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 79, 63] total 204 [2024-11-13 16:26:55,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384286564] [2024-11-13 16:26:55,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:26:55,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2024-11-13 16:26:55,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:26:55,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2024-11-13 16:26:55,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1959, Invalid=39453, Unknown=0, NotChecked=0, Total=41412 [2024-11-13 16:26:55,121 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand has 204 states, 204 states have (on average 3.1813725490196076) internal successors, (649), 204 states have internal predecessors, (649), 0 states have call successors, (0), 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 16:27:28,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:27:28,426 INFO L93 Difference]: Finished difference Result 371 states and 373 transitions. [2024-11-13 16:27:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2024-11-13 16:27:28,427 INFO L78 Accepts]: Start accepts. Automaton has has 204 states, 204 states have (on average 3.1813725490196076) internal successors, (649), 204 states have internal predecessors, (649), 0 states have call successors, (0), 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 234 [2024-11-13 16:27:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:27:28,428 INFO L225 Difference]: With dead ends: 371 [2024-11-13 16:27:28,428 INFO L226 Difference]: Without dead ends: 248 [2024-11-13 16:27:28,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20160 ImplicationChecksByTransitivity, 49.1s TimeCoverageRelationStatistics Valid=4897, Invalid=95275, Unknown=0, NotChecked=0, Total=100172 [2024-11-13 16:27:28,430 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 33 mSDsluCounter, 3079 mSDsCounter, 0 mSdLazyCounter, 18038 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 18055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 18038 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:27:28,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3122 Invalid, 18055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 18038 Invalid, 1 Unknown, 0 Unchecked, 12.4s Time] [2024-11-13 16:27:28,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-13 16:27:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2024-11-13 16:27:28,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 244 states have (on average 1.0163934426229508) internal successors, (248), 245 states have internal predecessors, (248), 0 states have call successors, (0), 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 16:27:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 248 transitions. [2024-11-13 16:27:28,434 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 248 transitions. Word has length 234 [2024-11-13 16:27:28,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:27:28,435 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 248 transitions. [2024-11-13 16:27:28,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 3.1813725490196076) internal successors, (649), 204 states have internal predecessors, (649), 0 states have call successors, (0), 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 16:27:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 248 transitions. [2024-11-13 16:27:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-13 16:27:28,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:27:28,437 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:27:28,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-13 16:27:28,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:28,637 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:27:28,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:27:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash 42173411, now seen corresponding path program 33 times [2024-11-13 16:27:28,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:27:28,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411141358] [2024-11-13 16:27:28,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:27:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:27:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1939 backedges. 35 proven. 1479 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-11-13 16:27:31,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:27:31,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411141358] [2024-11-13 16:27:31,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411141358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:27:31,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479429751] [2024-11-13 16:27:31,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:27:31,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:31,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:27:31,550 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:27:31,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-13 16:27:46,582 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-13 16:27:46,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:27:46,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 230 conjuncts are in the unsatisfiable core [2024-11-13 16:27:46,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:27:47,900 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 16:27:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1939 backedges. 35 proven. 1904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:27:49,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:27:49,584 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 16:27:49,585 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 16:27:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1939 backedges. 35 proven. 1479 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-11-13 16:27:50,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479429751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:27:50,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:27:50,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 60, 43] total 101 [2024-11-13 16:27:50,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117351410] [2024-11-13 16:27:50,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:27:50,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-13 16:27:50,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:27:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-13 16:27:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=9780, Unknown=0, NotChecked=0, Total=10100 [2024-11-13 16:27:50,886 INFO L87 Difference]: Start difference. First operand 246 states and 248 transitions. Second operand has 101 states, 101 states have (on average 4.326732673267327) internal successors, (437), 101 states have internal predecessors, (437), 0 states have call successors, (0), 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 16:27:55,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:27:55,671 INFO L93 Difference]: Finished difference Result 436 states and 439 transitions. [2024-11-13 16:27:55,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-13 16:27:55,672 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 4.326732673267327) internal successors, (437), 101 states have internal predecessors, (437), 0 states have call successors, (0), 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 242 [2024-11-13 16:27:55,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:27:55,672 INFO L225 Difference]: With dead ends: 436 [2024-11-13 16:27:55,672 INFO L226 Difference]: Without dead ends: 251 [2024-11-13 16:27:55,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2361 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=400, Invalid=13172, Unknown=0, NotChecked=0, Total=13572 [2024-11-13 16:27:55,673 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 19 mSDsluCounter, 4494 mSDsCounter, 0 mSdLazyCounter, 10211 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 10228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 10211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:27:55,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4576 Invalid, 10228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 10211 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-13 16:27:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-13 16:27:55,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2024-11-13 16:27:55,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 247 states have (on average 1.0161943319838056) internal successors, (251), 248 states have internal predecessors, (251), 0 states have call successors, (0), 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 16:27:55,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2024-11-13 16:27:55,676 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 242 [2024-11-13 16:27:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:27:55,677 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 251 transitions. [2024-11-13 16:27:55,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 4.326732673267327) internal successors, (437), 101 states have internal predecessors, (437), 0 states have call successors, (0), 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 16:27:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 251 transitions. [2024-11-13 16:27:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-13 16:27:55,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:27:55,678 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:27:55,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-13 16:27:55,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:55,879 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:27:55,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:27:55,879 INFO L85 PathProgramCache]: Analyzing trace with hash 635298197, now seen corresponding path program 34 times [2024-11-13 16:27:55,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:27:55,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427201246] [2024-11-13 16:27:55,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:27:55,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:27:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1991 backedges. 376 proven. 1190 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-11-13 16:27:58,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:27:58,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427201246] [2024-11-13 16:27:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427201246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:27:58,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531963866] [2024-11-13 16:27:58,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:27:58,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:58,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:27:58,937 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:27:58,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-13 16:28:18,329 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:28:18,329 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:28:18,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 392 conjuncts are in the unsatisfiable core [2024-11-13 16:28:18,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:28:19,586 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 15 treesize of output 1 [2024-11-13 16:28:21,313 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 16:28:21,428 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 16:28:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1991 backedges. 35 proven. 1956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:28,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:28:35,969 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 22 treesize of output 20 [2024-11-13 16:28:35,972 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 34 treesize of output 30 [2024-11-13 16:28:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1991 backedges. 35 proven. 1479 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2024-11-13 16:28:39,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531963866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:28:39,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:28:39,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 84, 64] total 183 [2024-11-13 16:28:39,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135521112] [2024-11-13 16:28:39,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:28:39,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 183 states [2024-11-13 16:28:39,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:39,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2024-11-13 16:28:39,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=804, Invalid=32502, Unknown=0, NotChecked=0, Total=33306 [2024-11-13 16:28:39,960 INFO L87 Difference]: Start difference. First operand 249 states and 251 transitions. Second operand has 183 states, 183 states have (on average 3.387978142076503) internal successors, (620), 183 states have internal predecessors, (620), 0 states have call successors, (0), 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 16:29:01,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:01,401 INFO L93 Difference]: Finished difference Result 395 states and 397 transitions. [2024-11-13 16:29:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-13 16:29:01,402 INFO L78 Accepts]: Start accepts. Automaton has has 183 states, 183 states have (on average 3.387978142076503) internal successors, (620), 183 states have internal predecessors, (620), 0 states have call successors, (0), 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 245 [2024-11-13 16:29:01,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:01,403 INFO L225 Difference]: With dead ends: 395 [2024-11-13 16:29:01,403 INFO L226 Difference]: Without dead ends: 265 [2024-11-13 16:29:01,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13574 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=1207, Invalid=58573, Unknown=0, NotChecked=0, Total=59780 [2024-11-13 16:29:01,404 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 26 mSDsluCounter, 5022 mSDsCounter, 0 mSdLazyCounter, 25102 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5068 SdHoareTripleChecker+Invalid, 25121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 25102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:01,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5068 Invalid, 25121 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 25102 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2024-11-13 16:29:01,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-13 16:29:01,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 257. [2024-11-13 16:29:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 255 states have (on average 1.0156862745098039) internal successors, (259), 256 states have internal predecessors, (259), 0 states have call successors, (0), 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 16:29:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 259 transitions. [2024-11-13 16:29:01,407 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 259 transitions. Word has length 245 [2024-11-13 16:29:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:01,407 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 259 transitions. [2024-11-13 16:29:01,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 183 states, 183 states have (on average 3.387978142076503) internal successors, (620), 183 states have internal predecessors, (620), 0 states have call successors, (0), 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 16:29:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 259 transitions. [2024-11-13 16:29:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-13 16:29:01,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:01,409 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:29:01,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-13 16:29:01,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-11-13 16:29:01,609 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:29:01,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:01,609 INFO L85 PathProgramCache]: Analyzing trace with hash -848449888, now seen corresponding path program 24 times [2024-11-13 16:29:01,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:01,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477016042] [2024-11-13 16:29:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:01,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2079 backedges. 376 proven. 1226 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2024-11-13 16:29:04,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:04,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477016042] [2024-11-13 16:29:04,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477016042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:29:04,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182605533] [2024-11-13 16:29:04,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:29:04,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:29:04,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:29:04,790 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:29:04,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-13 16:30:06,086 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-13 16:30:06,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:30:06,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 143 conjuncts are in the unsatisfiable core [2024-11-13 16:30:06,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2079 backedges. 425 proven. 1177 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2024-11-13 16:30:08,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:10,387 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 16:30:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2079 backedges. 425 proven. 1177 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2024-11-13 16:30:11,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182605533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:30:11,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:30:11,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 42] total 106 [2024-11-13 16:30:11,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122886902] [2024-11-13 16:30:11,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:30:11,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-11-13 16:30:11,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:11,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-11-13 16:30:11,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1615, Invalid=9727, Unknown=0, NotChecked=0, Total=11342 [2024-11-13 16:30:11,156 INFO L87 Difference]: Start difference. First operand 257 states and 259 transitions. Second operand has 107 states, 106 states have (on average 4.962264150943396) internal successors, (526), 107 states have internal predecessors, (526), 0 states have call successors, (0), 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 16:30:14,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:30:14,146 INFO L93 Difference]: Finished difference Result 259 states and 261 transitions. [2024-11-13 16:30:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 16:30:14,147 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 4.962264150943396) internal successors, (526), 107 states have internal predecessors, (526), 0 states have call successors, (0), 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 250 [2024-11-13 16:30:14,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:30:14,147 INFO L225 Difference]: With dead ends: 259 [2024-11-13 16:30:14,147 INFO L226 Difference]: Without dead ends: 259 [2024-11-13 16:30:14,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 417 SyntacticMatches, 19 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7022 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2123, Invalid=13627, Unknown=0, NotChecked=0, Total=15750 [2024-11-13 16:30:14,149 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 4 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 3617 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 3617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:30:14,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1818 Invalid, 3617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3617 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 16:30:14,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-13 16:30:14,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2024-11-13 16:30:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 257 states have (on average 1.0155642023346303) internal successors, (261), 258 states have internal predecessors, (261), 0 states have call successors, (0), 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 16:30:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 261 transitions. [2024-11-13 16:30:14,152 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 261 transitions. Word has length 250 [2024-11-13 16:30:14,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:30:14,152 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 261 transitions. [2024-11-13 16:30:14,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 4.962264150943396) internal successors, (526), 107 states have internal predecessors, (526), 0 states have call successors, (0), 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 16:30:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 261 transitions. [2024-11-13 16:30:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-13 16:30:14,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:30:14,154 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:14,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-13 16:30:14,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-11-13 16:30:14,355 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:30:14,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:14,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1942527011, now seen corresponding path program 35 times [2024-11-13 16:30:14,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:14,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588285035] [2024-11-13 16:30:14,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:14,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2170 backedges. 37 proven. 1656 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2024-11-13 16:30:18,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:18,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588285035] [2024-11-13 16:30:18,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588285035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:18,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652893615] [2024-11-13 16:30:18,029 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:30:18,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:18,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:18,031 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:18,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-13 16:30:36,324 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-13 16:30:36,324 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:30:36,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 406 conjuncts are in the unsatisfiable core [2024-11-13 16:30:36,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:38,018 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 16:30:42,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2170 backedges. 37 proven. 2133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:30:42,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:43,097 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 20 treesize of output 12 [2024-11-13 16:30:45,567 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 16:30:45,569 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 16:30:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2170 backedges. 37 proven. 1656 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2024-11-13 16:30:47,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652893615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:30:47,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:30:47,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 85, 48] total 153 [2024-11-13 16:30:47,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747807732] [2024-11-13 16:30:47,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:30:47,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2024-11-13 16:30:47,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:47,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2024-11-13 16:30:47,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=22831, Unknown=0, NotChecked=0, Total=23256 [2024-11-13 16:30:47,779 INFO L87 Difference]: Start difference. First operand 259 states and 261 transitions. Second operand has 153 states, 153 states have (on average 3.895424836601307) internal successors, (596), 153 states have internal predecessors, (596), 0 states have call successors, (0), 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 16:31:05,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:31:05,868 INFO L93 Difference]: Finished difference Result 738 states and 743 transitions. [2024-11-13 16:31:05,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2024-11-13 16:31:05,869 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 153 states have (on average 3.895424836601307) internal successors, (596), 153 states have internal predecessors, (596), 0 states have call successors, (0), 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 255 [2024-11-13 16:31:05,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:31:05,869 INFO L225 Difference]: With dead ends: 738 [2024-11-13 16:31:05,870 INFO L226 Difference]: Without dead ends: 269 [2024-11-13 16:31:05,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9380 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=1117, Invalid=62639, Unknown=0, NotChecked=0, Total=63756 [2024-11-13 16:31:05,872 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 54 mSDsluCounter, 4807 mSDsCounter, 0 mSdLazyCounter, 23555 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 23591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 23555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:31:05,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4853 Invalid, 23591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 23555 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-11-13 16:31:05,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-13 16:31:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 265. [2024-11-13 16:31:05,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 263 states have (on average 1.015209125475285) internal successors, (267), 264 states have internal predecessors, (267), 0 states have call successors, (0), 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 16:31:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 267 transitions. [2024-11-13 16:31:05,875 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 267 transitions. Word has length 255 [2024-11-13 16:31:05,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:31:05,875 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 267 transitions. [2024-11-13 16:31:05,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 153 states have (on average 3.895424836601307) internal successors, (596), 153 states have internal predecessors, (596), 0 states have call successors, (0), 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 16:31:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 267 transitions. [2024-11-13 16:31:05,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-13 16:31:05,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:31:05,877 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:31:05,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-13 16:31:06,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:31:06,077 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:31:06,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:31:06,078 INFO L85 PathProgramCache]: Analyzing trace with hash 512545049, now seen corresponding path program 36 times [2024-11-13 16:31:06,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:31:06,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553211863] [2024-11-13 16:31:06,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:31:06,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:31:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:31:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 425 proven. 1323 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-11-13 16:31:08,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:31:08,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553211863] [2024-11-13 16:31:08,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553211863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:31:08,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961141124] [2024-11-13 16:31:08,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:31:08,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:31:08,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:31:08,830 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:31:08,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-13 16:32:34,480 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-11-13 16:32:34,480 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:32:34,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-13 16:32:34,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:32:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 477 proven. 1271 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-11-13 16:32:36,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:32:39,490 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 16:32:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 477 proven. 1271 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-11-13 16:32:40,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961141124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:32:40,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:32:40,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 43, 43] total 106 [2024-11-13 16:32:40,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759092589] [2024-11-13 16:32:40,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:32:40,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-11-13 16:32:40,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:32:40,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-11-13 16:32:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1704, Invalid=9638, Unknown=0, NotChecked=0, Total=11342 [2024-11-13 16:32:40,656 INFO L87 Difference]: Start difference. First operand 265 states and 267 transitions. Second operand has 107 states, 106 states have (on average 5.169811320754717) internal successors, (548), 107 states have internal predecessors, (548), 0 states have call successors, (0), 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 16:32:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:32:43,861 INFO L93 Difference]: Finished difference Result 274 states and 276 transitions. [2024-11-13 16:32:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-13 16:32:43,862 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 5.169811320754717) internal successors, (548), 107 states have internal predecessors, (548), 0 states have call successors, (0), 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 261 [2024-11-13 16:32:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:32:43,863 INFO L225 Difference]: With dead ends: 274 [2024-11-13 16:32:43,863 INFO L226 Difference]: Without dead ends: 274 [2024-11-13 16:32:43,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 437 SyntacticMatches, 20 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6898 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2220, Invalid=13782, Unknown=0, NotChecked=0, Total=16002 [2024-11-13 16:32:43,864 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 16 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 3600 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 3602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:32:43,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1725 Invalid, 3602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3600 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 16:32:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-13 16:32:43,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 270. [2024-11-13 16:32:43,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 268 states have (on average 1.0149253731343284) internal successors, (272), 269 states have internal predecessors, (272), 0 states have call successors, (0), 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 16:32:43,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 272 transitions. [2024-11-13 16:32:43,867 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 272 transitions. Word has length 261 [2024-11-13 16:32:43,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:32:43,867 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 272 transitions. [2024-11-13 16:32:43,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 5.169811320754717) internal successors, (548), 107 states have internal predecessors, (548), 0 states have call successors, (0), 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 16:32:43,868 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 272 transitions. [2024-11-13 16:32:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-13 16:32:43,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:32:43,870 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:32:43,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-13 16:32:44,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d2732-62f7-4844-aeb4-5d470fa932c1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:32:44,070 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-13 16:32:44,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:32:44,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1365446758, now seen corresponding path program 25 times [2024-11-13 16:32:44,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:32:44,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686480343] [2024-11-13 16:32:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:32:44,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:32:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat