./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB --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 71679b2a85162a2bf4315b62ab1893b5cfd06e20fc9e264973bd31bc9d08e300 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:30:21,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:30:21,415 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:30:21,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:30:21,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:30:21,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:30:21,468 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:30:21,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:30:21,469 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:30:21,469 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:30:21,470 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:30:21,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:30:21,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:30:21,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:30:21,471 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:30:21,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:30:21,472 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:30:21,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:30:21,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:30:21,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:30:21,472 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:30:21,472 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:30:21,472 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:30:21,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:30:21,472 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:30:21,472 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:30:21,472 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:30:21,472 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:30:21,473 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:30:21,473 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:30:21,473 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:30:21,473 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:30:21,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:30:21,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:30:21,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:30:21,474 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:30:21,474 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:30:21,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:30:21,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:30:21,474 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:30:21,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:30:21,475 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:30:21,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:30:21,475 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:30:21,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:30:21,475 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:30:21,475 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:30:21,475 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_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 71679b2a85162a2bf4315b62ab1893b5cfd06e20fc9e264973bd31bc9d08e300 [2024-11-28 03:30:21,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:30:21,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:30:21,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:30:21,817 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:30:21,819 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:30:21,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i [2024-11-28 03:30:25,409 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/data/52f8beff9/36c13762d65f4ddf950b737aa6031dd5/FLAGd502587b9 [2024-11-28 03:30:25,851 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:30:25,855 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i [2024-11-28 03:30:25,877 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/data/52f8beff9/36c13762d65f4ddf950b737aa6031dd5/FLAGd502587b9 [2024-11-28 03:30:25,904 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/data/52f8beff9/36c13762d65f4ddf950b737aa6031dd5 [2024-11-28 03:30:25,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:30:25,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:30:25,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:30:25,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:30:25,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:30:25,925 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:30:25" (1/1) ... [2024-11-28 03:30:25,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0f767a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:25, skipping insertion in model container [2024-11-28 03:30:25,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:30:25" (1/1) ... [2024-11-28 03:30:25,978 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:30:26,447 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:30:26,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:30:26,472 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:30:26,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:30:26,588 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:30:26,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26 WrapperNode [2024-11-28 03:30:26,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:30:26,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:30:26,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:30:26,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:30:26,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,649 INFO L138 Inliner]: procedures = 117, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2024-11-28 03:30:26,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:30:26,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:30:26,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:30:26,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:30:26,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,667 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,693 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-11-28 03:30:26,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,704 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,709 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,718 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:30:26,727 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:30:26,727 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:30:26,727 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:30:26,728 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (1/1) ... [2024-11-28 03:30:26,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:30:26,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:26,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:30:26,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:30:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:30:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:30:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:30:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:30:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:30:26,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:30:26,982 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:30:26,985 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:30:27,289 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-28 03:30:27,289 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:30:27,304 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:30:27,305 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:30:27,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:30:27 BoogieIcfgContainer [2024-11-28 03:30:27,305 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:30:27,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:30:27,309 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:30:27,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:30:27,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:30:25" (1/3) ... [2024-11-28 03:30:27,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc3825f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:30:27, skipping insertion in model container [2024-11-28 03:30:27,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:26" (2/3) ... [2024-11-28 03:30:27,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc3825f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:30:27, skipping insertion in model container [2024-11-28 03:30:27,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:30:27" (3/3) ... [2024-11-28 03:30:27,320 INFO L128 eAbstractionObserver]: Analyzing ICFG cstrchr-alloca-2.i [2024-11-28 03:30:27,342 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:30:27,344 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cstrchr-alloca-2.i that has 1 procedures, 35 locations, 1 initial locations, 2 loop locations, and 11 error locations. [2024-11-28 03:30:27,421 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:30:27,441 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;@22a78b5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:30:27,441 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-28 03:30:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:27,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:30:27,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:27,458 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:27,459 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:27,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:27,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1804971564, now seen corresponding path program 1 times [2024-11-28 03:30:27,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:27,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027566802] [2024-11-28 03:30:27,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:27,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:27,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:27,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027566802] [2024-11-28 03:30:27,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027566802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:27,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:27,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:30:27,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655480426] [2024-11-28 03:30:27,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:27,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:30:27,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:27,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:30:27,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:30:27,848 INFO L87 Difference]: Start difference. First operand has 35 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2024-11-28 03:30:27,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:27,926 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2024-11-28 03:30:27,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:30:27,930 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 [2024-11-28 03:30:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:27,939 INFO L225 Difference]: With dead ends: 33 [2024-11-28 03:30:27,939 INFO L226 Difference]: Without dead ends: 31 [2024-11-28 03:30:27,943 INFO L434 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 [2024-11-28 03:30:27,948 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:27,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:27,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-28 03:30:27,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-28 03:30:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-28 03:30:27,995 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 7 [2024-11-28 03:30:27,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:27,996 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-28 03:30:27,996 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) [2024-11-28 03:30:27,997 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-28 03:30:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:30:27,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:27,997 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:27,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:30:27,998 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:27,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:28,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1804971565, now seen corresponding path program 1 times [2024-11-28 03:30:28,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:28,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349524162] [2024-11-28 03:30:28,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:28,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:28,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:28,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349524162] [2024-11-28 03:30:28,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349524162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:28,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:28,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:30:28,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111621007] [2024-11-28 03:30:28,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:28,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:30:28,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:28,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:30:28,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:30:28,476 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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) [2024-11-28 03:30:28,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:28,542 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-11-28 03:30:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:30:28,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 [2024-11-28 03:30:28,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:28,544 INFO L225 Difference]: With dead ends: 39 [2024-11-28 03:30:28,544 INFO L226 Difference]: Without dead ends: 39 [2024-11-28 03:30:28,544 INFO L434 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 [2024-11-28 03:30:28,546 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:28,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 54 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:28,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-28 03:30:28,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-11-28 03:30:28,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 37 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) [2024-11-28 03:30:28,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-28 03:30:28,558 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 7 [2024-11-28 03:30:28,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:28,559 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-28 03:30:28,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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) [2024-11-28 03:30:28,559 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-28 03:30:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:30:28,559 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:28,560 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:28,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:30:28,560 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:28,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1804969387, now seen corresponding path program 1 times [2024-11-28 03:30:28,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:28,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642324595] [2024-11-28 03:30:28,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:28,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:28,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:28,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642324595] [2024-11-28 03:30:28,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642324595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:28,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:28,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:30:28,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455724693] [2024-11-28 03:30:28,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:28,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:30:28,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:28,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:30:28,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:30:28,732 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. 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) [2024-11-28 03:30:28,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:28,787 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2024-11-28 03:30:28,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:30:28,791 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 [2024-11-28 03:30:28,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:28,792 INFO L225 Difference]: With dead ends: 35 [2024-11-28 03:30:28,793 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 03:30:28,793 INFO L434 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 [2024-11-28 03:30:28,794 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:28,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 79 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:28,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 03:30:28,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-28 03:30:28,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-28 03:30:28,801 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 7 [2024-11-28 03:30:28,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:28,801 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-28 03:30:28,801 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) [2024-11-28 03:30:28,801 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-28 03:30:28,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:30:28,802 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:28,802 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:28,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:30:28,803 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:28,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:28,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1806818607, now seen corresponding path program 1 times [2024-11-28 03:30:28,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:28,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098731609] [2024-11-28 03:30:28,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:28,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:29,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098731609] [2024-11-28 03:30:29,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098731609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:29,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:29,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:30:29,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620508806] [2024-11-28 03:30:29,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:29,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:30:29,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:29,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:30:29,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:30:29,099 INFO L87 Difference]: Start difference. First operand 35 states and 38 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) [2024-11-28 03:30:29,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:29,127 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2024-11-28 03:30:29,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:30:29,128 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 [2024-11-28 03:30:29,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:29,128 INFO L225 Difference]: With dead ends: 34 [2024-11-28 03:30:29,128 INFO L226 Difference]: Without dead ends: 34 [2024-11-28 03:30:29,128 INFO L434 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 [2024-11-28 03:30:29,129 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:29,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 46 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:29,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-28 03:30:29,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-11-28 03:30:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:29,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-11-28 03:30:29,133 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 7 [2024-11-28 03:30:29,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:29,133 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-11-28 03:30:29,133 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) [2024-11-28 03:30:29,133 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-11-28 03:30:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:30:29,134 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:29,134 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:29,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:30:29,134 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:29,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:29,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1806816429, now seen corresponding path program 1 times [2024-11-28 03:30:29,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:29,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715721698] [2024-11-28 03:30:29,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:29,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:29,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:29,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715721698] [2024-11-28 03:30:29,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715721698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:29,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:29,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:30:29,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70799558] [2024-11-28 03:30:29,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:29,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:30:29,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:29,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:30:29,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:30:29,292 INFO L87 Difference]: Start difference. First operand 32 states and 35 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) [2024-11-28 03:30:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:29,409 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-11-28 03:30:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:30:29,410 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 [2024-11-28 03:30:29,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:29,410 INFO L225 Difference]: With dead ends: 36 [2024-11-28 03:30:29,410 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 03:30:29,411 INFO L434 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 [2024-11-28 03:30:29,411 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:29,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 76 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:29,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 03:30:29,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2024-11-28 03:30:29,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:29,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-28 03:30:29,415 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 7 [2024-11-28 03:30:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:29,416 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-28 03:30:29,416 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) [2024-11-28 03:30:29,416 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-28 03:30:29,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 03:30:29,416 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:29,416 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:29,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:30:29,417 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:29,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash -589114544, now seen corresponding path program 1 times [2024-11-28 03:30:29,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:29,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568000816] [2024-11-28 03:30:29,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:29,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:29,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:29,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568000816] [2024-11-28 03:30:29,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568000816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:29,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:29,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:30:29,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730326860] [2024-11-28 03:30:29,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:29,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:30:29,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:29,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:30:29,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:30:29,466 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 4 states, 3 states have (on average 3.0) 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) [2024-11-28 03:30:29,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:29,516 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2024-11-28 03:30:29,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:30:29,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) 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 [2024-11-28 03:30:29,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:29,517 INFO L225 Difference]: With dead ends: 32 [2024-11-28 03:30:29,517 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 03:30:29,518 INFO L434 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 [2024-11-28 03:30:29,518 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:29,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 33 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:29,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 03:30:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-28 03:30:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:29,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-28 03:30:29,522 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 9 [2024-11-28 03:30:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:29,523 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-28 03:30:29,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) 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) [2024-11-28 03:30:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-28 03:30:29,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 03:30:29,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:29,524 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:29,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:30:29,524 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:29,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:29,525 INFO L85 PathProgramCache]: Analyzing trace with hash -589114543, now seen corresponding path program 1 times [2024-11-28 03:30:29,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:29,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517341498] [2024-11-28 03:30:29,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:29,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:29,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:29,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517341498] [2024-11-28 03:30:29,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517341498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:29,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:29,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:30:29,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438689458] [2024-11-28 03:30:29,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:29,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:30:29,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:29,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:30:29,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:30:29,672 INFO L87 Difference]: Start difference. First operand 32 states and 36 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) [2024-11-28 03:30:29,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:29,778 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-28 03:30:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:30:29,779 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 [2024-11-28 03:30:29,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:29,779 INFO L225 Difference]: With dead ends: 43 [2024-11-28 03:30:29,779 INFO L226 Difference]: Without dead ends: 43 [2024-11-28 03:30:29,780 INFO L434 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 [2024-11-28 03:30:29,780 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:29,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 61 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:29,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-28 03:30:29,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-11-28 03:30:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 38 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) [2024-11-28 03:30:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2024-11-28 03:30:29,787 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 9 [2024-11-28 03:30:29,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:29,787 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2024-11-28 03:30:29,787 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) [2024-11-28 03:30:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2024-11-28 03:30:29,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:30:29,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:29,788 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:29,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:30:29,788 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:29,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:29,789 INFO L85 PathProgramCache]: Analyzing trace with hash -535021978, now seen corresponding path program 1 times [2024-11-28 03:30:29,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:29,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614955951] [2024-11-28 03:30:29,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:29,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:30,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:30,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614955951] [2024-11-28 03:30:30,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614955951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:30,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640638781] [2024-11-28 03:30:30,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:30,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:30,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:30,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:30,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:30:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:30,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:30:30,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:30,334 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 7 [2024-11-28 03:30:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:30,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:31,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640638781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:31,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:31,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-28 03:30:31,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577677677] [2024-11-28 03:30:31,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:31,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:30:31,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:31,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:30:31,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:30:31,089 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 17 states, 16 states have (on average 1.9375) internal successors, (31), 17 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) [2024-11-28 03:30:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:31,445 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2024-11-28 03:30:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:30:31,446 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 03:30:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:31,450 INFO L225 Difference]: With dead ends: 40 [2024-11-28 03:30:31,450 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 03:30:31,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:30:31,451 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:31,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 127 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:30:31,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 03:30:31,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2024-11-28 03:30:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-11-28 03:30:31,462 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 11 [2024-11-28 03:30:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:31,463 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-11-28 03:30:31,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 17 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) [2024-11-28 03:30:31,464 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-11-28 03:30:31,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 03:30:31,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:31,464 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:31,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:30:31,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 03:30:31,665 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:31,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:31,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2011530985, now seen corresponding path program 1 times [2024-11-28 03:30:31,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:31,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966219343] [2024-11-28 03:30:31,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:31,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:31,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:31,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966219343] [2024-11-28 03:30:31,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966219343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:31,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:31,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:30:31,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044478650] [2024-11-28 03:30:31,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:31,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:30:31,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:31,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:30:31,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:30:31,702 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2024-11-28 03:30:31,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:31,719 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-11-28 03:30:31,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:30:31,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 [2024-11-28 03:30:31,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:31,720 INFO L225 Difference]: With dead ends: 37 [2024-11-28 03:30:31,721 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 03:30:31,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:30:31,721 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:31,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:31,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 03:30:31,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-28 03:30:31,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 36 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) [2024-11-28 03:30:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-11-28 03:30:31,725 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 14 [2024-11-28 03:30:31,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:31,725 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-11-28 03:30:31,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2024-11-28 03:30:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-11-28 03:30:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:30:31,726 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:31,726 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:31,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:30:31,726 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:31,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash 165624076, now seen corresponding path program 1 times [2024-11-28 03:30:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:31,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64516987] [2024-11-28 03:30:31,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:31,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:32,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:32,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64516987] [2024-11-28 03:30:32,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64516987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:32,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:32,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:30:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257577834] [2024-11-28 03:30:32,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:32,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:30:32,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:32,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:30:32,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:30:32,003 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2024-11-28 03:30:32,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:32,146 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2024-11-28 03:30:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:30:32,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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 [2024-11-28 03:30:32,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:32,148 INFO L225 Difference]: With dead ends: 46 [2024-11-28 03:30:32,150 INFO L226 Difference]: Without dead ends: 46 [2024-11-28 03:30:32,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:30:32,151 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:32,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 110 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-28 03:30:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2024-11-28 03:30:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 42 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) [2024-11-28 03:30:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2024-11-28 03:30:32,159 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 16 [2024-11-28 03:30:32,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:32,159 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2024-11-28 03:30:32,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2024-11-28 03:30:32,159 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2024-11-28 03:30:32,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:30:32,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:32,160 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:32,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:30:32,162 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:32,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:32,163 INFO L85 PathProgramCache]: Analyzing trace with hash 347985666, now seen corresponding path program 1 times [2024-11-28 03:30:32,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:32,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733324305] [2024-11-28 03:30:32,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:32,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:32,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:32,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733324305] [2024-11-28 03:30:32,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733324305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:32,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:32,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:30:32,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929393198] [2024-11-28 03:30:32,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:32,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:30:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:32,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:30:32,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:30:32,300 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2024-11-28 03:30:32,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:32,328 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-11-28 03:30:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:30:32,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 [2024-11-28 03:30:32,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:32,330 INFO L225 Difference]: With dead ends: 42 [2024-11-28 03:30:32,330 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 03:30:32,330 INFO L434 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 [2024-11-28 03:30:32,331 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:32,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 40 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:32,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 03:30:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-28 03:30:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 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) [2024-11-28 03:30:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-11-28 03:30:32,338 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16 [2024-11-28 03:30:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:32,339 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-11-28 03:30:32,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2024-11-28 03:30:32,339 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-11-28 03:30:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:30:32,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:32,340 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:32,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:30:32,340 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:32,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:32,343 INFO L85 PathProgramCache]: Analyzing trace with hash -845493174, now seen corresponding path program 1 times [2024-11-28 03:30:32,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:32,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731911730] [2024-11-28 03:30:32,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:32,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:32,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:32,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731911730] [2024-11-28 03:30:32,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731911730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:32,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:32,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:30:32,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891488857] [2024-11-28 03:30:32,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:32,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:30:32,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:32,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:30:32,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:30:32,655 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2024-11-28 03:30:32,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:32,781 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2024-11-28 03:30:32,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:30:32,782 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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 [2024-11-28 03:30:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:32,782 INFO L225 Difference]: With dead ends: 39 [2024-11-28 03:30:32,783 INFO L226 Difference]: Without dead ends: 33 [2024-11-28 03:30:32,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:30:32,783 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:32,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 72 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:32,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-28 03:30:32,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-11-28 03:30:32,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 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) [2024-11-28 03:30:32,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-28 03:30:32,790 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2024-11-28 03:30:32,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:32,790 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-28 03:30:32,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2024-11-28 03:30:32,791 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-28 03:30:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:30:32,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:32,795 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:32,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:30:32,795 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:32,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:32,796 INFO L85 PathProgramCache]: Analyzing trace with hash 224414385, now seen corresponding path program 1 times [2024-11-28 03:30:32,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:32,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515432539] [2024-11-28 03:30:32,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:32,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:33,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:33,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515432539] [2024-11-28 03:30:33,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515432539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:33,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335695234] [2024-11-28 03:30:33,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:33,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:33,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:33,299 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:33,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:30:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:33,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:30:33,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:33,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:33,769 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 21 treesize of output 17 [2024-11-28 03:30:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335695234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:33,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:33,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2024-11-28 03:30:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932811697] [2024-11-28 03:30:33,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:33,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:30:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:33,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:30:33,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:30:33,887 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 17 states, 16 states have (on average 3.3125) internal successors, (53), 17 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) [2024-11-28 03:30:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:34,099 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2024-11-28 03:30:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:30:34,100 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 17 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 20 [2024-11-28 03:30:34,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:34,103 INFO L225 Difference]: With dead ends: 41 [2024-11-28 03:30:34,103 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 03:30:34,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:30:34,104 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 33 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:34,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 139 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:30:34,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 03:30:34,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2024-11-28 03:30:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:34,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-11-28 03:30:34,110 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 20 [2024-11-28 03:30:34,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:34,111 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-11-28 03:30:34,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 17 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) [2024-11-28 03:30:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-11-28 03:30:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 03:30:34,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:34,112 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:34,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:30:34,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:34,313 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:34,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1661908396, now seen corresponding path program 2 times [2024-11-28 03:30:34,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:34,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858645196] [2024-11-28 03:30:34,314 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:30:34,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:34,342 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:30:34,342 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:35,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:35,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858645196] [2024-11-28 03:30:35,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858645196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:35,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102749868] [2024-11-28 03:30:35,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:30:35,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:35,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:35,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:35,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:30:35,133 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:30:35,133 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:35,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 03:30:35,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:35,292 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 [2024-11-28 03:30:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:35,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:35,502 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 [2024-11-28 03:30:35,506 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 [2024-11-28 03:30:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:35,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102749868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:35,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:35,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 25 [2024-11-28 03:30:35,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205313622] [2024-11-28 03:30:35,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:35,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 03:30:35,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:35,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 03:30:35,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:30:35,613 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 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) [2024-11-28 03:30:35,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:35,975 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2024-11-28 03:30:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:30:35,976 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 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) Word has length 27 [2024-11-28 03:30:35,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:35,977 INFO L225 Difference]: With dead ends: 48 [2024-11-28 03:30:35,977 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 03:30:35,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 03:30:35,978 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:35,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 129 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:30:35,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 03:30:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-11-28 03:30:35,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-11-28 03:30:35,984 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 27 [2024-11-28 03:30:35,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:35,984 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-11-28 03:30:35,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 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) [2024-11-28 03:30:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-11-28 03:30:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 03:30:35,985 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:35,985 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:35,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:30:36,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:36,186 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:36,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:36,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1912078107, now seen corresponding path program 3 times [2024-11-28 03:30:36,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:36,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8220847] [2024-11-28 03:30:36,186 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:30:36,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:36,219 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:30:36,219 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:36,611 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:36,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:36,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8220847] [2024-11-28 03:30:36,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8220847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:36,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334489912] [2024-11-28 03:30:36,612 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:30:36,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:36,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:36,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:36,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:30:36,698 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:30:36,698 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:36,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 03:30:36,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:36,851 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:37,063 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 [2024-11-28 03:30:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:37,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334489912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:37,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:37,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-28 03:30:37,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459379690] [2024-11-28 03:30:37,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:37,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:30:37,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:37,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:30:37,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:30:37,124 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 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) [2024-11-28 03:30:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:37,301 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2024-11-28 03:30:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:30:37,302 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 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 31 [2024-11-28 03:30:37,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:37,302 INFO L225 Difference]: With dead ends: 45 [2024-11-28 03:30:37,302 INFO L226 Difference]: Without dead ends: 45 [2024-11-28 03:30:37,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:30:37,305 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:37,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 137 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:37,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-28 03:30:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2024-11-28 03:30:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-11-28 03:30:37,313 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 31 [2024-11-28 03:30:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:37,313 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-11-28 03:30:37,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 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) [2024-11-28 03:30:37,313 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-11-28 03:30:37,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 03:30:37,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:37,314 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:37,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:30:37,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:30:37,515 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:37,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:37,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1479236856, now seen corresponding path program 4 times [2024-11-28 03:30:37,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105628665] [2024-11-28 03:30:37,516 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:30:37,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:37,566 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:30:37,566 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:38,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:38,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105628665] [2024-11-28 03:30:38,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105628665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:38,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192699865] [2024-11-28 03:30:38,039 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:30:38,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:38,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:38,042 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:38,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:30:38,144 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:30:38,144 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:38,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 03:30:38,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:38,212 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 [2024-11-28 03:30:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:38,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:38,365 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 15 treesize of output 13 [2024-11-28 03:30:38,371 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 [2024-11-28 03:30:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:38,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192699865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:38,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:38,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-11-28 03:30:38,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727994265] [2024-11-28 03:30:38,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:38,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:30:38,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:38,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:30:38,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:30:38,471 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 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) [2024-11-28 03:30:38,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:38,753 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2024-11-28 03:30:38,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:30:38,754 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 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) Word has length 38 [2024-11-28 03:30:38,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:38,755 INFO L225 Difference]: With dead ends: 66 [2024-11-28 03:30:38,755 INFO L226 Difference]: Without dead ends: 46 [2024-11-28 03:30:38,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:30:38,756 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:38,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 162 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:30:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-28 03:30:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2024-11-28 03:30:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 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) [2024-11-28 03:30:38,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2024-11-28 03:30:38,760 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 38 [2024-11-28 03:30:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:38,760 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2024-11-28 03:30:38,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 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) [2024-11-28 03:30:38,761 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2024-11-28 03:30:38,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 03:30:38,764 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:38,764 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:38,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:30:38,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:38,965 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:38,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1986853857, now seen corresponding path program 5 times [2024-11-28 03:30:38,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:38,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634952638] [2024-11-28 03:30:38,966 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:30:38,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:38,996 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 03:30:38,996 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:39,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:39,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634952638] [2024-11-28 03:30:39,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634952638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:39,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027392126] [2024-11-28 03:30:39,438 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:30:39,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:39,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:39,441 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:39,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:30:39,550 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 03:30:39,550 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:39,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 03:30:39,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:39,571 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 [2024-11-28 03:30:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:39,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:40,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027392126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:40,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:40,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2024-11-28 03:30:40,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183508625] [2024-11-28 03:30:40,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:40,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:30:40,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:40,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:30:40,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:30:40,572 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 26 states, 25 states have (on average 4.08) internal successors, (102), 26 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:40,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:40,912 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2024-11-28 03:30:40,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:30:40,913 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.08) internal successors, (102), 26 states have internal predecessors, (102), 0 states have call successors, (0), 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 [2024-11-28 03:30:40,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:40,914 INFO L225 Difference]: With dead ends: 56 [2024-11-28 03:30:40,915 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 03:30:40,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:30:40,916 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 20 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:40,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 337 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:30:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 03:30:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2024-11-28 03:30:40,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 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) [2024-11-28 03:30:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2024-11-28 03:30:40,925 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 42 [2024-11-28 03:30:40,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:40,925 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2024-11-28 03:30:40,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.08) internal successors, (102), 26 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:40,925 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2024-11-28 03:30:40,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 03:30:40,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:40,926 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:40,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:30:41,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:30:41,127 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:41,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:41,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2033507202, now seen corresponding path program 6 times [2024-11-28 03:30:41,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:41,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522066795] [2024-11-28 03:30:41,127 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:30:41,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:41,171 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 03:30:41,171 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:41,942 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:41,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:41,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522066795] [2024-11-28 03:30:41,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522066795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:41,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548159851] [2024-11-28 03:30:41,943 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:30:41,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:41,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:41,946 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:41,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:30:42,066 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 03:30:42,067 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:42,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 03:30:42,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:42,260 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 [2024-11-28 03:30:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:42,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:42,525 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 [2024-11-28 03:30:42,530 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 16 treesize of output 12 [2024-11-28 03:30:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:42,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548159851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:42,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:42,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 27 [2024-11-28 03:30:42,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210207995] [2024-11-28 03:30:42,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:42,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 03:30:42,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:42,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 03:30:42,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:30:42,669 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 27 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:43,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:43,093 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2024-11-28 03:30:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:30:43,094 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 27 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-28 03:30:43,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:43,094 INFO L225 Difference]: With dead ends: 84 [2024-11-28 03:30:43,094 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 03:30:43,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2024-11-28 03:30:43,096 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:43,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 272 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:30:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 03:30:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2024-11-28 03:30:43,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 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) [2024-11-28 03:30:43,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-11-28 03:30:43,107 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 49 [2024-11-28 03:30:43,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:43,107 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-11-28 03:30:43,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 27 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:43,107 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-11-28 03:30:43,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 03:30:43,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:43,108 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:43,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:30:43,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:30:43,309 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:43,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:43,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1307922167, now seen corresponding path program 7 times [2024-11-28 03:30:43,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:43,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002012007] [2024-11-28 03:30:43,310 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:30:43,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:44,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:44,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002012007] [2024-11-28 03:30:44,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002012007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:44,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552494736] [2024-11-28 03:30:44,068 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:30:44,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:44,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:44,070 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:44,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:30:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:44,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 03:30:44,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 15 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:44,568 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:44,986 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 [2024-11-28 03:30:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 15 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:45,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552494736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:45,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:45,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 27 [2024-11-28 03:30:45,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214348278] [2024-11-28 03:30:45,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:45,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 03:30:45,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:45,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 03:30:45,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:30:45,115 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 28 states, 27 states have (on average 4.148148148148148) internal successors, (112), 28 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:45,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:45,489 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2024-11-28 03:30:45,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:30:45,489 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.148148148148148) internal successors, (112), 28 states have internal predecessors, (112), 0 states have call successors, (0), 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 [2024-11-28 03:30:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:45,490 INFO L225 Difference]: With dead ends: 67 [2024-11-28 03:30:45,490 INFO L226 Difference]: Without dead ends: 67 [2024-11-28 03:30:45,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 85 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:30:45,492 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:45,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 329 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:30:45,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-28 03:30:45,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2024-11-28 03:30:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 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) [2024-11-28 03:30:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2024-11-28 03:30:45,497 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 53 [2024-11-28 03:30:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:45,498 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2024-11-28 03:30:45,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.148148148148148) internal successors, (112), 28 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:45,499 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2024-11-28 03:30:45,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 03:30:45,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:45,500 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:45,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:30:45,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:45,705 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:45,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:45,706 INFO L85 PathProgramCache]: Analyzing trace with hash 757036710, now seen corresponding path program 8 times [2024-11-28 03:30:45,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:45,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978071159] [2024-11-28 03:30:45,706 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:30:45,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:45,733 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:30:45,733 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:46,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:46,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978071159] [2024-11-28 03:30:46,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978071159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:46,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543184938] [2024-11-28 03:30:46,471 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:30:46,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:46,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:46,473 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:46,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:30:46,580 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:30:46,580 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:46,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 03:30:46,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:46,781 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 [2024-11-28 03:30:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:46,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:46,975 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 [2024-11-28 03:30:46,978 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 [2024-11-28 03:30:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:47,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543184938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:47,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:47,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2024-11-28 03:30:47,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875557141] [2024-11-28 03:30:47,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:47,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 03:30:47,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:47,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 03:30:47,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:30:47,102 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:47,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:47,643 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2024-11-28 03:30:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:30:47,643 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2024-11-28 03:30:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:47,644 INFO L225 Difference]: With dead ends: 102 [2024-11-28 03:30:47,644 INFO L226 Difference]: Without dead ends: 68 [2024-11-28 03:30:47,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 03:30:47,647 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 19 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:47,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 414 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:30:47,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-28 03:30:47,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2024-11-28 03:30:47,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 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) [2024-11-28 03:30:47,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2024-11-28 03:30:47,654 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 60 [2024-11-28 03:30:47,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:47,654 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2024-11-28 03:30:47,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2024-11-28 03:30:47,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 03:30:47,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:47,655 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:47,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:30:47,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:47,855 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:47,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash -271698291, now seen corresponding path program 9 times [2024-11-28 03:30:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548313759] [2024-11-28 03:30:47,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:30:47,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:47,886 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 03:30:47,886 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 15 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:48,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:48,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548313759] [2024-11-28 03:30:48,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548313759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:48,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063219392] [2024-11-28 03:30:48,646 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:30:48,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:48,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:48,649 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:48,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:30:48,784 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 03:30:48,784 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:48,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 03:30:48,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:48,799 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 [2024-11-28 03:30:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 28 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:49,051 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 28 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:49,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063219392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:49,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:49,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2024-11-28 03:30:49,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594006281] [2024-11-28 03:30:49,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:49,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 03:30:49,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:49,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 03:30:49,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1201, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:30:49,738 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 38 states, 37 states have (on average 4.243243243243243) internal successors, (157), 38 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) [2024-11-28 03:30:50,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:50,077 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2024-11-28 03:30:50,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:30:50,077 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 4.243243243243243) internal successors, (157), 38 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) Word has length 64 [2024-11-28 03:30:50,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:50,078 INFO L225 Difference]: With dead ends: 78 [2024-11-28 03:30:50,078 INFO L226 Difference]: Without dead ends: 78 [2024-11-28 03:30:50,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=274, Invalid=1532, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 03:30:50,079 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:50,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 190 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:30:50,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-28 03:30:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2024-11-28 03:30:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 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) [2024-11-28 03:30:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-11-28 03:30:50,083 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 64 [2024-11-28 03:30:50,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:50,083 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-11-28 03:30:50,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 4.243243243243243) internal successors, (157), 38 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) [2024-11-28 03:30:50,084 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-11-28 03:30:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 03:30:50,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:50,084 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:50,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 03:30:50,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 03:30:50,288 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:50,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:50,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1437923920, now seen corresponding path program 10 times [2024-11-28 03:30:50,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:50,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891160319] [2024-11-28 03:30:50,289 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:30:50,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:50,317 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:30:50,317 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 26 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:51,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:51,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891160319] [2024-11-28 03:30:51,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891160319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:51,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353828808] [2024-11-28 03:30:51,094 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:30:51,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:51,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:51,097 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:51,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:30:51,255 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:30:51,255 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:51,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 03:30:51,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:51,352 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 [2024-11-28 03:30:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 26 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:51,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:51,546 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 [2024-11-28 03:30:51,549 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 [2024-11-28 03:30:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 26 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:51,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353828808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:51,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:51,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-11-28 03:30:51,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917549422] [2024-11-28 03:30:51,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:51,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 03:30:51,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:51,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 03:30:51,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:30:51,670 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:52,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:52,259 INFO L93 Difference]: Finished difference Result 120 states and 121 transitions. [2024-11-28 03:30:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:30:52,260 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-28 03:30:52,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:52,261 INFO L225 Difference]: With dead ends: 120 [2024-11-28 03:30:52,261 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 03:30:52,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:30:52,266 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:52,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 478 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:30:52,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 03:30:52,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2024-11-28 03:30:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 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) [2024-11-28 03:30:52,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2024-11-28 03:30:52,269 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 71 [2024-11-28 03:30:52,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:52,269 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2024-11-28 03:30:52,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:52,273 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2024-11-28 03:30:52,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 03:30:52,274 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:52,274 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:52,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 03:30:52,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:52,474 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:52,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:52,475 INFO L85 PathProgramCache]: Analyzing trace with hash 905253897, now seen corresponding path program 11 times [2024-11-28 03:30:52,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:52,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139786253] [2024-11-28 03:30:52,475 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:30:52,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:52,510 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 03:30:52,510 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 45 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:53,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:53,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139786253] [2024-11-28 03:30:53,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139786253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:53,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746791969] [2024-11-28 03:30:53,207 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:30:53,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:53,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:53,210 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:53,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:30:53,361 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 03:30:53,361 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:53,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-28 03:30:53,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:53,383 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 [2024-11-28 03:30:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 45 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:53,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 45 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:55,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746791969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:55,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:55,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 40 [2024-11-28 03:30:55,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846380351] [2024-11-28 03:30:55,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:55,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:30:55,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:55,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:30:55,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:30:55,004 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 41 states, 40 states have (on average 4.5) internal successors, (180), 41 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:55,563 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2024-11-28 03:30:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:30:55,563 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 4.5) internal successors, (180), 41 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-28 03:30:55,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:55,564 INFO L225 Difference]: With dead ends: 89 [2024-11-28 03:30:55,564 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 03:30:55,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=238, Invalid=1484, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 03:30:55,565 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 26 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:55,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 663 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:30:55,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 03:30:55,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2024-11-28 03:30:55,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:55,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2024-11-28 03:30:55,570 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 75 [2024-11-28 03:30:55,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:55,571 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2024-11-28 03:30:55,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 4.5) internal successors, (180), 41 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:30:55,571 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2024-11-28 03:30:55,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 03:30:55,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:55,573 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:55,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:30:55,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 03:30:55,774 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:30:55,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:55,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1382205100, now seen corresponding path program 12 times [2024-11-28 03:30:55,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:55,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602155303] [2024-11-28 03:30:55,775 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:30:55,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:55,848 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-28 03:30:55,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 31 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:57,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:57,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602155303] [2024-11-28 03:30:57,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602155303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:57,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978857236] [2024-11-28 03:30:57,096 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:30:57,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:57,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:57,098 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:57,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:30:57,295 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-28 03:30:57,296 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:30:57,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-28 03:30:57,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:57,314 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 [2024-11-28 03:30:57,542 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 [2024-11-28 03:31:06,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:31:06,161 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 18 treesize of output 19 [2024-11-28 03:31:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 45 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:06,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:31:08,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-28 03:31:08,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-28 03:31:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 45 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:08,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978857236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:31:08,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:31:08,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 61 [2024-11-28 03:31:08,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141385037] [2024-11-28 03:31:08,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:31:08,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-28 03:31:08,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:08,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-28 03:31:08,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=3302, Unknown=1, NotChecked=0, Total=3660 [2024-11-28 03:31:08,936 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 61 states, 61 states have (on average 3.9344262295081966) internal successors, (240), 61 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) [2024-11-28 03:31:32,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:32,152 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2024-11-28 03:31:32,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 03:31:32,152 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.9344262295081966) internal successors, (240), 61 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 82 [2024-11-28 03:31:32,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:32,153 INFO L225 Difference]: With dead ends: 151 [2024-11-28 03:31:32,153 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 03:31:32,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=838, Invalid=6301, Unknown=1, NotChecked=0, Total=7140 [2024-11-28 03:31:32,156 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 184 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:32,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 793 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:31:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 03:31:32,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2024-11-28 03:31:32,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2024-11-28 03:31:32,160 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 82 [2024-11-28 03:31:32,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:32,161 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2024-11-28 03:31:32,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.9344262295081966) internal successors, (240), 61 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) [2024-11-28 03:31:32,161 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2024-11-28 03:31:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 03:31:32,162 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:32,162 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:32,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 03:31:32,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:31:32,363 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:31:32,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:32,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1465259810, now seen corresponding path program 13 times [2024-11-28 03:31:32,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:32,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959111242] [2024-11-28 03:31:32,364 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:31:32,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 36 proven. 259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:33,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:33,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959111242] [2024-11-28 03:31:33,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959111242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:31:33,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791113441] [2024-11-28 03:31:33,665 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:31:33,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:31:33,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:31:33,667 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:31:33,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:31:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:33,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-28 03:31:33,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:31:34,172 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 [2024-11-28 03:31:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 36 proven. 259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:34,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:31:34,462 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 [2024-11-28 03:31:34,465 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 [2024-11-28 03:31:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 36 proven. 259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:34,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791113441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:31:34,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:31:34,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 37 [2024-11-28 03:31:34,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608790266] [2024-11-28 03:31:34,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:31:34,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-28 03:31:34,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:34,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-28 03:31:34,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:31:34,634 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:35,824 INFO L93 Difference]: Finished difference Result 156 states and 157 transitions. [2024-11-28 03:31:35,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 03:31:35,825 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 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 93 [2024-11-28 03:31:35,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:35,825 INFO L225 Difference]: With dead ends: 156 [2024-11-28 03:31:35,825 INFO L226 Difference]: Without dead ends: 101 [2024-11-28 03:31:35,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=145, Invalid=1925, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 03:31:35,826 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 22 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:35,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1121 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:31:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-28 03:31:35,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2024-11-28 03:31:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2024-11-28 03:31:35,833 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 93 [2024-11-28 03:31:35,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:35,833 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2024-11-28 03:31:35,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:35,833 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2024-11-28 03:31:35,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 03:31:35,834 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:35,834 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:35,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:31:36,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:31:36,035 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:31:36,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:36,035 INFO L85 PathProgramCache]: Analyzing trace with hash -43700197, now seen corresponding path program 14 times [2024-11-28 03:31:36,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:36,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688793150] [2024-11-28 03:31:36,035 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:31:36,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:36,067 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:31:36,067 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:31:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 66 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:37,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:37,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688793150] [2024-11-28 03:31:37,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688793150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:31:37,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029612861] [2024-11-28 03:31:37,222 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:31:37,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:31:37,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:31:37,224 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:31:37,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:31:37,382 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:31:37,383 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:31:37,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-28 03:31:37,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:31:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 91 proven. 233 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:38,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:31:38,738 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 [2024-11-28 03:31:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 91 proven. 233 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:39,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029612861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:31:39,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:31:39,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 50 [2024-11-28 03:31:39,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840198372] [2024-11-28 03:31:39,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:31:39,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 03:31:39,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:39,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 03:31:39,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2205, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 03:31:39,276 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 51 states, 50 states have (on average 4.7) internal successors, (235), 51 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) [2024-11-28 03:31:39,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:39,975 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2024-11-28 03:31:39,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:31:39,976 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 4.7) internal successors, (235), 51 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) Word has length 97 [2024-11-28 03:31:39,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:39,977 INFO L225 Difference]: With dead ends: 111 [2024-11-28 03:31:39,977 INFO L226 Difference]: Without dead ends: 111 [2024-11-28 03:31:39,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=373, Invalid=2279, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 03:31:39,978 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 23 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:39,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 879 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:31:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-28 03:31:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2024-11-28 03:31:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2024-11-28 03:31:39,982 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 97 [2024-11-28 03:31:39,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:39,982 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2024-11-28 03:31:39,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 4.7) internal successors, (235), 51 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) [2024-11-28 03:31:39,983 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2024-11-28 03:31:39,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 03:31:39,984 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:39,984 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:39,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:31:40,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 03:31:40,188 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:31:40,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:40,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1762999038, now seen corresponding path program 15 times [2024-11-28 03:31:40,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:40,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664122408] [2024-11-28 03:31:40,189 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:31:40,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:40,240 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 03:31:40,240 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:31:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 41 proven. 340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:41,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:41,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664122408] [2024-11-28 03:31:41,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664122408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:31:41,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292193767] [2024-11-28 03:31:41,647 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:31:41,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:31:41,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:31:41,649 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:31:41,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:31:41,867 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 03:31:41,867 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:31:41,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-28 03:31:41,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:31:42,274 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 [2024-11-28 03:31:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 41 proven. 340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:42,496 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:31:42,659 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 [2024-11-28 03:31:42,663 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 [2024-11-28 03:31:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 41 proven. 340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:42,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292193767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:31:42,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:31:42,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 40 [2024-11-28 03:31:42,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949940987] [2024-11-28 03:31:42,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:31:42,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 03:31:42,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:42,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 03:31:42,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1456, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 03:31:42,862 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 40 states, 40 states have (on average 3.825) internal successors, (153), 40 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:44,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:44,183 INFO L93 Difference]: Finished difference Result 174 states and 175 transitions. [2024-11-28 03:31:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 03:31:44,184 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.825) internal successors, (153), 40 states have internal predecessors, (153), 0 states have call successors, (0), 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 [2024-11-28 03:31:44,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:44,185 INFO L225 Difference]: With dead ends: 174 [2024-11-28 03:31:44,185 INFO L226 Difference]: Without dead ends: 112 [2024-11-28 03:31:44,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=157, Invalid=2293, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 03:31:44,185 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 27 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:44,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1250 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:31:44,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-28 03:31:44,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2024-11-28 03:31:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:44,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2024-11-28 03:31:44,188 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 104 [2024-11-28 03:31:44,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:44,188 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2024-11-28 03:31:44,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.825) internal successors, (153), 40 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:44,188 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2024-11-28 03:31:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-28 03:31:44,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:44,189 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:44,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:31:44,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:31:44,390 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:31:44,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:44,390 INFO L85 PathProgramCache]: Analyzing trace with hash 80119401, now seen corresponding path program 16 times [2024-11-28 03:31:44,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:44,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195885770] [2024-11-28 03:31:44,391 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:31:44,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:44,419 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:31:44,419 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:31:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 123 proven. 291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:45,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:45,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195885770] [2024-11-28 03:31:45,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195885770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:31:45,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23723473] [2024-11-28 03:31:45,677 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:31:45,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:31:45,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:31:45,680 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:31:45,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:31:45,919 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:31:45,919 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:31:45,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-28 03:31:45,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:31:45,940 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 [2024-11-28 03:31:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 120 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:46,699 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:31:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 120 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:48,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23723473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:31:48,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:31:48,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 56 [2024-11-28 03:31:48,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584842543] [2024-11-28 03:31:48,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:31:48,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-28 03:31:48,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:48,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-28 03:31:48,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=2725, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 03:31:48,126 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand has 57 states, 56 states have (on average 4.660714285714286) internal successors, (261), 57 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) [2024-11-28 03:31:49,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:49,009 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2024-11-28 03:31:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 03:31:49,010 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 4.660714285714286) internal successors, (261), 57 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) Word has length 108 [2024-11-28 03:31:49,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:49,011 INFO L225 Difference]: With dead ends: 122 [2024-11-28 03:31:49,011 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 03:31:49,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=500, Invalid=2806, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 03:31:49,012 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:49,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1040 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:31:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 03:31:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2024-11-28 03:31:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 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) [2024-11-28 03:31:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2024-11-28 03:31:49,016 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 108 [2024-11-28 03:31:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:49,016 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2024-11-28 03:31:49,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 4.660714285714286) internal successors, (261), 57 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) [2024-11-28 03:31:49,017 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2024-11-28 03:31:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-28 03:31:49,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:49,018 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:49,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 03:31:49,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:31:49,223 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:31:49,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:49,223 INFO L85 PathProgramCache]: Analyzing trace with hash -65512716, now seen corresponding path program 17 times [2024-11-28 03:31:49,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:49,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962780629] [2024-11-28 03:31:49,223 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:31:49,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:49,272 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 03:31:49,272 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:31:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 46 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:50,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:50,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962780629] [2024-11-28 03:31:50,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962780629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:31:50,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890547011] [2024-11-28 03:31:50,763 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:31:50,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:31:50,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:31:50,764 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:31:50,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:31:50,979 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 03:31:50,979 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:31:50,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-28 03:31:50,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:31:50,991 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 [2024-11-28 03:31:51,448 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 [2024-11-28 03:31:53,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:31:53,050 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 18 treesize of output 15 [2024-11-28 03:31:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 120 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:53,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:31:55,142 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 [2024-11-28 03:31:55,147 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 [2024-11-28 03:31:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 120 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:56,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890547011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:31:56,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:31:56,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 26] total 78 [2024-11-28 03:31:56,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087283426] [2024-11-28 03:31:56,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:31:56,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-28 03:31:56,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:56,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-28 03:31:56,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=5516, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 03:31:56,879 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 78 states, 78 states have (on average 4.346153846153846) internal successors, (339), 78 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:05,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:05,407 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2024-11-28 03:32:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 03:32:05,407 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 4.346153846153846) internal successors, (339), 78 states have internal predecessors, (339), 0 states have call successors, (0), 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 [2024-11-28 03:32:05,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:05,408 INFO L225 Difference]: With dead ends: 205 [2024-11-28 03:32:05,409 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 03:32:05,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=749, Invalid=8563, Unknown=0, NotChecked=0, Total=9312 [2024-11-28 03:32:05,411 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 44 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 2424 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 2429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2424 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:05,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1713 Invalid, 2429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2424 Invalid, 3 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 03:32:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 03:32:05,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 127. [2024-11-28 03:32:05,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 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) [2024-11-28 03:32:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2024-11-28 03:32:05,415 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 115 [2024-11-28 03:32:05,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:05,416 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2024-11-28 03:32:05,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 4.346153846153846) internal successors, (339), 78 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2024-11-28 03:32:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 03:32:05,417 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:05,417 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:05,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:05,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:32:05,618 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:32:05,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:05,620 INFO L85 PathProgramCache]: Analyzing trace with hash 946747824, now seen corresponding path program 18 times [2024-11-28 03:32:05,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:05,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314807448] [2024-11-28 03:32:05,620 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:32:05,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:05,701 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-28 03:32:05,702 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 51 proven. 535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:07,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:07,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314807448] [2024-11-28 03:32:07,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314807448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:07,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201314407] [2024-11-28 03:32:07,205 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:32:07,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:07,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:07,206 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:07,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:32:07,465 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-28 03:32:07,466 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:07,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-28 03:32:07,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:07,975 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 [2024-11-28 03:32:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 51 proven. 535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:08,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:08,418 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 [2024-11-28 03:32:08,424 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 [2024-11-28 03:32:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 51 proven. 535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:08,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201314407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:08,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:08,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 48 [2024-11-28 03:32:08,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599525348] [2024-11-28 03:32:08,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:08,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 03:32:08,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:08,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 03:32:08,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2130, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:32:08,614 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 48 states, 48 states have (on average 3.875) internal successors, (186), 48 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) [2024-11-28 03:32:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:10,431 INFO L93 Difference]: Finished difference Result 210 states and 211 transitions. [2024-11-28 03:32:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 03:32:10,431 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.875) internal successors, (186), 48 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) Word has length 126 [2024-11-28 03:32:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:10,432 INFO L225 Difference]: With dead ends: 210 [2024-11-28 03:32:10,432 INFO L226 Difference]: Without dead ends: 134 [2024-11-28 03:32:10,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=181, Invalid=3125, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 03:32:10,433 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 26 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:10,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2006 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:32:10,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-28 03:32:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2024-11-28 03:32:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2024-11-28 03:32:10,438 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 126 [2024-11-28 03:32:10,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:10,438 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2024-11-28 03:32:10,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.875) internal successors, (186), 48 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) [2024-11-28 03:32:10,438 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2024-11-28 03:32:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 03:32:10,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:10,440 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:10,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 03:32:10,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:10,640 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:32:10,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:10,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1049093079, now seen corresponding path program 19 times [2024-11-28 03:32:10,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:10,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804930096] [2024-11-28 03:32:10,641 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:32:10,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 153 proven. 474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:12,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:12,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804930096] [2024-11-28 03:32:12,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804930096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:12,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513447797] [2024-11-28 03:32:12,390 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:32:12,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:12,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:12,392 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:12,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:32:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:12,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-28 03:32:12,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 190 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:13,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:14,335 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 [2024-11-28 03:32:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 190 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:14,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513447797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:14,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:14,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 55 [2024-11-28 03:32:14,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012674149] [2024-11-28 03:32:14,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:14,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 03:32:14,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:14,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 03:32:14,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=2703, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 03:32:14,759 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 56 states, 55 states have (on average 4.836363636363636) internal successors, (266), 56 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:15,880 INFO L93 Difference]: Finished difference Result 144 states and 145 transitions. [2024-11-28 03:32:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 03:32:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.836363636363636) internal successors, (266), 56 states have internal predecessors, (266), 0 states have call successors, (0), 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 [2024-11-28 03:32:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:15,882 INFO L225 Difference]: With dead ends: 144 [2024-11-28 03:32:15,882 INFO L226 Difference]: Without dead ends: 144 [2024-11-28 03:32:15,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 218 SyntacticMatches, 12 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=402, Invalid=2790, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 03:32:15,883 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 17 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:15,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1374 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:32:15,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-28 03:32:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2024-11-28 03:32:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 137 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) [2024-11-28 03:32:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2024-11-28 03:32:15,891 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 130 [2024-11-28 03:32:15,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:15,892 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2024-11-28 03:32:15,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.836363636363636) internal successors, (266), 56 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2024-11-28 03:32:15,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 03:32:15,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:15,894 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:15,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 03:32:16,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:16,095 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:32:16,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash -414865978, now seen corresponding path program 20 times [2024-11-28 03:32:16,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:16,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283729196] [2024-11-28 03:32:16,095 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:16,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:16,147 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:16,148 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 56 proven. 649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:18,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:18,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283729196] [2024-11-28 03:32:18,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283729196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:18,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148433575] [2024-11-28 03:32:18,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:18,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:18,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:18,169 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:18,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:32:18,378 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:18,378 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:18,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-28 03:32:18,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:19,049 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 [2024-11-28 03:32:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 56 proven. 649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:19,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:19,473 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 [2024-11-28 03:32:19,476 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 [2024-11-28 03:32:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 56 proven. 649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148433575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:19,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:19,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 50 [2024-11-28 03:32:19,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540406905] [2024-11-28 03:32:19,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:19,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-28 03:32:19,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:19,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-28 03:32:19,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2340, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 03:32:19,695 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand has 50 states, 50 states have (on average 3.96) internal successors, (198), 50 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:22,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:22,689 INFO L93 Difference]: Finished difference Result 228 states and 229 transitions. [2024-11-28 03:32:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 03:32:22,689 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.96) internal successors, (198), 50 states have internal predecessors, (198), 0 states have call successors, (0), 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 137 [2024-11-28 03:32:22,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:22,690 INFO L225 Difference]: With dead ends: 228 [2024-11-28 03:32:22,690 INFO L226 Difference]: Without dead ends: 145 [2024-11-28 03:32:22,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=249, Invalid=5603, Unknown=0, NotChecked=0, Total=5852 [2024-11-28 03:32:22,691 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 33 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 3360 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 3371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:22,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2566 Invalid, 3371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3360 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 03:32:22,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-28 03:32:22,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2024-11-28 03:32:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 141 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:22,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2024-11-28 03:32:22,698 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 137 [2024-11-28 03:32:22,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:22,698 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2024-11-28 03:32:22,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.96) internal successors, (198), 50 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:22,699 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2024-11-28 03:32:22,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:32:22,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:22,700 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:22,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:22,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:22,901 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:32:22,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1802366271, now seen corresponding path program 21 times [2024-11-28 03:32:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:22,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184933310] [2024-11-28 03:32:22,902 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:32:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:22,962 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-28 03:32:22,962 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 190 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:24,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:24,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184933310] [2024-11-28 03:32:24,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184933310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:24,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114967087] [2024-11-28 03:32:24,939 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:32:24,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:24,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:24,940 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:24,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:32:25,417 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-28 03:32:25,417 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:25,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-28 03:32:25,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 231 proven. 519 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:26,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:27,145 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 [2024-11-28 03:32:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 231 proven. 519 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:27,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114967087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:27,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:27,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 59 [2024-11-28 03:32:27,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449238184] [2024-11-28 03:32:27,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:27,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-28 03:32:27,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:27,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-28 03:32:27,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=564, Invalid=2976, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 03:32:27,565 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand has 60 states, 59 states have (on average 4.88135593220339) internal successors, (288), 60 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:28,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:28,357 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2024-11-28 03:32:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 03:32:28,358 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 4.88135593220339) internal successors, (288), 60 states have internal predecessors, (288), 0 states have call successors, (0), 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 141 [2024-11-28 03:32:28,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:28,358 INFO L225 Difference]: With dead ends: 155 [2024-11-28 03:32:28,358 INFO L226 Difference]: Without dead ends: 155 [2024-11-28 03:32:28,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 238 SyntacticMatches, 13 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2674 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=844, Invalid=4268, Unknown=0, NotChecked=0, Total=5112 [2024-11-28 03:32:28,359 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 122 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:28,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 298 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:32:28,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-28 03:32:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 149. [2024-11-28 03:32:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 148 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) [2024-11-28 03:32:28,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2024-11-28 03:32:28,369 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 141 [2024-11-28 03:32:28,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:28,370 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2024-11-28 03:32:28,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 4.88135593220339) internal successors, (288), 60 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2024-11-28 03:32:28,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 03:32:28,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:28,371 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:28,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:28,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 03:32:28,578 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:32:28,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:28,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1448233122, now seen corresponding path program 22 times [2024-11-28 03:32:28,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:28,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137953539] [2024-11-28 03:32:28,579 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:32:28,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:28,636 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:32:28,636 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 61 proven. 774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:30,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:30,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137953539] [2024-11-28 03:32:30,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137953539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:30,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083907144] [2024-11-28 03:32:30,836 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:32:30,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:30,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:30,838 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:30,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:32:31,285 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:32:31,285 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:31,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 137 conjuncts are in the unsatisfiable core [2024-11-28 03:32:31,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:31,975 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 [2024-11-28 03:32:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 61 proven. 774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:32,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:32,546 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 [2024-11-28 03:32:32,549 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 [2024-11-28 03:32:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 61 proven. 774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:32,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083907144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:32,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:32,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 52 [2024-11-28 03:32:32,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643546794] [2024-11-28 03:32:32,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:32,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-28 03:32:32,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:32,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-28 03:32:32,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2520, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 03:32:32,758 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand has 52 states, 52 states have (on average 4.096153846153846) internal successors, (213), 52 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:35,005 INFO L93 Difference]: Finished difference Result 246 states and 247 transitions. [2024-11-28 03:32:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 03:32:35,005 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.096153846153846) internal successors, (213), 52 states have internal predecessors, (213), 0 states have call successors, (0), 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 148 [2024-11-28 03:32:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:35,006 INFO L225 Difference]: With dead ends: 246 [2024-11-28 03:32:35,006 INFO L226 Difference]: Without dead ends: 156 [2024-11-28 03:32:35,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=205, Invalid=4085, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 03:32:35,007 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 35 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 3125 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:35,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2344 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3125 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:32:35,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-28 03:32:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 153. [2024-11-28 03:32:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2024-11-28 03:32:35,011 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 148 [2024-11-28 03:32:35,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:35,011 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2024-11-28 03:32:35,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.096153846153846) internal successors, (213), 52 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2024-11-28 03:32:35,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-28 03:32:35,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:35,013 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:35,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 03:32:35,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 03:32:35,214 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:32:35,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:35,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1683634757, now seen corresponding path program 23 times [2024-11-28 03:32:35,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:35,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862053116] [2024-11-28 03:32:35,214 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:32:35,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:35,285 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-28 03:32:35,286 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 279 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:36,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:36,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862053116] [2024-11-28 03:32:36,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862053116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:36,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916510566] [2024-11-28 03:32:36,966 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:32:36,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:36,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:36,968 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:36,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:32:37,364 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-28 03:32:37,365 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:37,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-11-28 03:32:37,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:37,382 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 [2024-11-28 03:32:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 231 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:38,530 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 242 proven. 642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:41,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916510566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:41,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:41,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 78 [2024-11-28 03:32:41,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494502852] [2024-11-28 03:32:41,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:41,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-28 03:32:41,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:41,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-28 03:32:41,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=823, Invalid=5339, Unknown=0, NotChecked=0, Total=6162 [2024-11-28 03:32:41,164 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 79 states, 78 states have (on average 4.67948717948718) internal successors, (365), 79 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:43,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:43,000 INFO L93 Difference]: Finished difference Result 166 states and 167 transitions. [2024-11-28 03:32:43,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 03:32:43,001 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 4.67948717948718) internal successors, (365), 79 states have internal predecessors, (365), 0 states have call successors, (0), 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 152 [2024-11-28 03:32:43,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:43,002 INFO L225 Difference]: With dead ends: 166 [2024-11-28 03:32:43,002 INFO L226 Difference]: Without dead ends: 166 [2024-11-28 03:32:43,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2394 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=884, Invalid=5758, Unknown=0, NotChecked=0, Total=6642 [2024-11-28 03:32:43,003 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 19 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:43,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2069 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:32:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-28 03:32:43,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 160. [2024-11-28 03:32:43,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 159 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:43,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-11-28 03:32:43,009 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 152 [2024-11-28 03:32:43,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:43,009 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-11-28 03:32:43,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 4.67948717948718) internal successors, (365), 79 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:43,010 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-11-28 03:32:43,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 03:32:43,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:43,011 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:43,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:43,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 03:32:43,212 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:32:43,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash 956815256, now seen corresponding path program 24 times [2024-11-28 03:32:43,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:43,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916952668] [2024-11-28 03:32:43,213 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:32:43,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:43,327 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-28 03:32:43,327 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 66 proven. 910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:45,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:45,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916952668] [2024-11-28 03:32:45,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916952668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:45,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217113056] [2024-11-28 03:32:45,812 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:32:45,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:45,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:45,814 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:45,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 03:32:46,360 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-28 03:32:46,360 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:46,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 149 conjuncts are in the unsatisfiable core [2024-11-28 03:32:46,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:47,170 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 [2024-11-28 03:32:47,464 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 66 proven. 910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:47,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:47,662 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 [2024-11-28 03:32:47,665 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 [2024-11-28 03:32:47,973 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 66 proven. 910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:47,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217113056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:47,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:47,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 55 [2024-11-28 03:32:47,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144907343] [2024-11-28 03:32:47,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:47,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-28 03:32:47,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:47,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-28 03:32:47,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2831, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 03:32:47,976 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 55 states, 55 states have (on average 4.1454545454545455) internal successors, (228), 55 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) [2024-11-28 03:32:50,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:50,614 INFO L93 Difference]: Finished difference Result 264 states and 265 transitions. [2024-11-28 03:32:50,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 03:32:50,614 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.1454545454545455) internal successors, (228), 55 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) Word has length 159 [2024-11-28 03:32:50,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:50,615 INFO L225 Difference]: With dead ends: 264 [2024-11-28 03:32:50,615 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 03:32:50,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=217, Invalid=4613, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 03:32:50,616 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 40 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 3648 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 3661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:50,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2775 Invalid, 3661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3648 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 03:32:50,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 03:32:50,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2024-11-28 03:32:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.0122699386503067) internal successors, (165), 163 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2024-11-28 03:32:50,620 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 159 [2024-11-28 03:32:50,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:50,620 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2024-11-28 03:32:50,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.1454545454545455) internal successors, (228), 55 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) [2024-11-28 03:32:50,620 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2024-11-28 03:32:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-28 03:32:50,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:50,621 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:50,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:50,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:50,822 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:32:50,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash -2111680943, now seen corresponding path program 25 times [2024-11-28 03:32:50,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:50,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384263954] [2024-11-28 03:32:50,822 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:32:50,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1029 backedges. 276 proven. 753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:53,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:53,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384263954] [2024-11-28 03:32:53,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384263954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:53,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594165962] [2024-11-28 03:32:53,272 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:32:53,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:53,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:53,274 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:53,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 03:32:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:53,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-11-28 03:32:53,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1029 backedges. 325 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:54,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:56,038 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 [2024-11-28 03:32:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1029 backedges. 325 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:56,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594165962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:56,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:56,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 33] total 67 [2024-11-28 03:32:56,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408335967] [2024-11-28 03:32:56,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:56,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-28 03:32:56,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:56,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-28 03:32:56,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=4002, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 03:32:56,621 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand has 68 states, 67 states have (on average 4.955223880597015) internal successors, (332), 68 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:58,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:58,270 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2024-11-28 03:32:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 03:32:58,271 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 4.955223880597015) internal successors, (332), 68 states have internal predecessors, (332), 0 states have call successors, (0), 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 163 [2024-11-28 03:32:58,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:58,272 INFO L225 Difference]: With dead ends: 177 [2024-11-28 03:32:58,272 INFO L226 Difference]: Without dead ends: 177 [2024-11-28 03:32:58,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 275 SyntacticMatches, 15 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2362 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=585, Invalid=4107, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 03:32:58,273 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 20 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:58,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2275 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:32:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-28 03:32:58,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 171. [2024-11-28 03:32:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.011764705882353) internal successors, (172), 170 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2024-11-28 03:32:58,277 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 163 [2024-11-28 03:32:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:58,277 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2024-11-28 03:32:58,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 4.955223880597015) internal successors, (332), 68 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2024-11-28 03:32:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-28 03:32:58,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:58,278 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:58,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 03:32:58,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 03:32:58,479 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:32:58,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:58,479 INFO L85 PathProgramCache]: Analyzing trace with hash 5201420, now seen corresponding path program 26 times [2024-11-28 03:32:58,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:58,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402194285] [2024-11-28 03:32:58,479 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:58,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:58,524 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:58,524 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 71 proven. 1057 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:00,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:00,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402194285] [2024-11-28 03:33:00,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402194285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:00,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307582045] [2024-11-28 03:33:00,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:00,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:00,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:00,897 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:00,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 03:33:01,178 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:01,178 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:01,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 159 conjuncts are in the unsatisfiable core [2024-11-28 03:33:01,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:02,015 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 [2024-11-28 03:33:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 71 proven. 1057 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:02,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:02,526 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 [2024-11-28 03:33:02,528 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 [2024-11-28 03:33:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 71 proven. 1057 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:02,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307582045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:02,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:02,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 58 [2024-11-28 03:33:02,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642200552] [2024-11-28 03:33:02,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:02,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 03:33:02,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:02,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 03:33:02,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=3160, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 03:33:02,745 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 58 states, 58 states have (on average 4.189655172413793) internal successors, (243), 58 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) [2024-11-28 03:33:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:05,182 INFO L93 Difference]: Finished difference Result 282 states and 283 transitions. [2024-11-28 03:33:05,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-28 03:33:05,183 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.189655172413793) internal successors, (243), 58 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) Word has length 170 [2024-11-28 03:33:05,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:05,183 INFO L225 Difference]: With dead ends: 282 [2024-11-28 03:33:05,183 INFO L226 Difference]: Without dead ends: 178 [2024-11-28 03:33:05,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=229, Invalid=5173, Unknown=0, NotChecked=0, Total=5402 [2024-11-28 03:33:05,184 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 42 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 3939 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 3953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:05,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3022 Invalid, 3953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3939 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 03:33:05,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-28 03:33:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 175. [2024-11-28 03:33:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 174 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:05,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-11-28 03:33:05,188 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 170 [2024-11-28 03:33:05,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:05,188 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-11-28 03:33:05,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.189655172413793) internal successors, (243), 58 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) [2024-11-28 03:33:05,188 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-11-28 03:33:05,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-28 03:33:05,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:05,189 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:05,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 03:33:05,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 03:33:05,390 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:33:05,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:05,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1418701235, now seen corresponding path program 27 times [2024-11-28 03:33:05,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:05,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709875985] [2024-11-28 03:33:05,390 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:33:05,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:05,465 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-28 03:33:05,465 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 325 proven. 860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:07,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:07,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709875985] [2024-11-28 03:33:07,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709875985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:07,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535116432] [2024-11-28 03:33:07,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:33:07,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:07,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:07,458 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:07,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 03:33:08,348 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-28 03:33:08,349 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:08,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-28 03:33:08,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 378 proven. 807 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:09,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:10,409 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 [2024-11-28 03:33:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 378 proven. 807 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:10,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535116432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:10,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:10,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 72 [2024-11-28 03:33:10,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774627814] [2024-11-28 03:33:10,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:10,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-28 03:33:10,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:10,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-28 03:33:10,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=4391, Unknown=0, NotChecked=0, Total=5256 [2024-11-28 03:33:10,908 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 73 states, 72 states have (on average 5.013888888888889) internal successors, (361), 73 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:12,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:12,162 INFO L93 Difference]: Finished difference Result 188 states and 189 transitions. [2024-11-28 03:33:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 03:33:12,163 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 5.013888888888889) internal successors, (361), 73 states have internal predecessors, (361), 0 states have call successors, (0), 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 174 [2024-11-28 03:33:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:12,164 INFO L225 Difference]: With dead ends: 188 [2024-11-28 03:33:12,164 INFO L226 Difference]: Without dead ends: 188 [2024-11-28 03:33:12,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 294 SyntacticMatches, 16 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4146 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1249, Invalid=6233, Unknown=0, NotChecked=0, Total=7482 [2024-11-28 03:33:12,165 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 137 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:12,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 505 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:33:12,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-28 03:33:12,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 182. [2024-11-28 03:33:12,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.011049723756906) internal successors, (183), 181 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) [2024-11-28 03:33:12,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2024-11-28 03:33:12,175 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 174 [2024-11-28 03:33:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:12,175 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2024-11-28 03:33:12,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 5.013888888888889) internal successors, (361), 73 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2024-11-28 03:33:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-28 03:33:12,177 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:12,177 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:12,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 03:33:12,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 03:33:12,378 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:33:12,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:12,379 INFO L85 PathProgramCache]: Analyzing trace with hash -664219542, now seen corresponding path program 28 times [2024-11-28 03:33:12,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:12,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349179884] [2024-11-28 03:33:12,380 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:33:12,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:12,452 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:33:12,452 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:14,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 76 proven. 1215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:14,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:14,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349179884] [2024-11-28 03:33:14,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349179884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:14,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137193504] [2024-11-28 03:33:14,478 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:33:14,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:14,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:14,480 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:14,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 03:33:15,629 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:33:15,629 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:15,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 171 conjuncts are in the unsatisfiable core [2024-11-28 03:33:15,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:15,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 03:33:16,010 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 [2024-11-28 03:33:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 76 proven. 1215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:16,016 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:16,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-28 03:33:16,246 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 [2024-11-28 03:33:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 76 proven. 1215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:16,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137193504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:16,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:16,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2024-11-28 03:33:16,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680148464] [2024-11-28 03:33:16,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:16,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-28 03:33:16,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:16,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-28 03:33:16,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1629, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 03:33:16,476 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand has 42 states, 42 states have (on average 4.523809523809524) internal successors, (190), 42 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:19,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:19,128 INFO L93 Difference]: Finished difference Result 300 states and 301 transitions. [2024-11-28 03:33:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-28 03:33:19,128 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.523809523809524) internal successors, (190), 42 states have internal predecessors, (190), 0 states have call successors, (0), 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 181 [2024-11-28 03:33:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:19,129 INFO L225 Difference]: With dead ends: 300 [2024-11-28 03:33:19,129 INFO L226 Difference]: Without dead ends: 189 [2024-11-28 03:33:19,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=157, Invalid=3149, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 03:33:19,130 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 35 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 3692 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 3707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:19,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2828 Invalid, 3707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3692 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 03:33:19,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-28 03:33:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2024-11-28 03:33:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.0108108108108107) internal successors, (187), 185 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2024-11-28 03:33:19,136 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 181 [2024-11-28 03:33:19,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:19,136 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2024-11-28 03:33:19,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.523809523809524) internal successors, (190), 42 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2024-11-28 03:33:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-28 03:33:19,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:19,138 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:19,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 03:33:19,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 03:33:19,339 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:33:19,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:19,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1820231267, now seen corresponding path program 29 times [2024-11-28 03:33:19,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:19,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097268014] [2024-11-28 03:33:19,340 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:19,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:19,438 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-28 03:33:19,438 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 435 proven. 917 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:21,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:21,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097268014] [2024-11-28 03:33:21,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097268014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:21,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411230778] [2024-11-28 03:33:21,515 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:21,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:21,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:21,517 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:21,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 03:33:22,041 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-28 03:33:22,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:22,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-11-28 03:33:22,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:22,060 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 [2024-11-28 03:33:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 435 proven. 917 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:23,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 435 proven. 917 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:27,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411230778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:27,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:27,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 90 [2024-11-28 03:33:27,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912236095] [2024-11-28 03:33:27,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:27,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-28 03:33:27,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:27,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-28 03:33:27,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=7185, Unknown=0, NotChecked=0, Total=8190 [2024-11-28 03:33:27,627 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand has 91 states, 90 states have (on average 4.888888888888889) internal successors, (440), 91 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:29,332 INFO L93 Difference]: Finished difference Result 199 states and 200 transitions. [2024-11-28 03:33:29,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 03:33:29,332 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 4.888888888888889) internal successors, (440), 91 states have internal predecessors, (440), 0 states have call successors, (0), 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 [2024-11-28 03:33:29,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:29,334 INFO L225 Difference]: With dead ends: 199 [2024-11-28 03:33:29,334 INFO L226 Difference]: Without dead ends: 199 [2024-11-28 03:33:29,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2307 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1058, Invalid=7314, Unknown=0, NotChecked=0, Total=8372 [2024-11-28 03:33:29,335 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 17 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 2975 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:29,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2468 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2975 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:33:29,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-28 03:33:29,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 193. [2024-11-28 03:33:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 192 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) [2024-11-28 03:33:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2024-11-28 03:33:29,340 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 185 [2024-11-28 03:33:29,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:29,340 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2024-11-28 03:33:29,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 4.888888888888889) internal successors, (440), 91 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:29,340 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2024-11-28 03:33:29,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-28 03:33:29,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:29,341 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:29,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 03:33:29,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-28 03:33:29,542 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:33:29,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2045162054, now seen corresponding path program 30 times [2024-11-28 03:33:29,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:29,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205666604] [2024-11-28 03:33:29,543 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:29,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:29,674 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-28 03:33:29,674 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1465 backedges. 81 proven. 1384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:33,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205666604] [2024-11-28 03:33:33,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205666604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889385950] [2024-11-28 03:33:33,005 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:33,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:33,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:33,008 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:33,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 03:33:33,997 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-28 03:33:33,997 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:34,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 179 conjuncts are in the unsatisfiable core [2024-11-28 03:33:34,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:35,191 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 [2024-11-28 03:33:35,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1465 backedges. 81 proven. 1384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:35,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:35,900 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 [2024-11-28 03:33:35,902 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 [2024-11-28 03:33:36,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1465 backedges. 81 proven. 1384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:36,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889385950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:36,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:36,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 64 [2024-11-28 03:33:36,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702996303] [2024-11-28 03:33:36,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:36,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 03:33:36,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:36,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 03:33:36,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3872, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 03:33:36,196 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand has 64 states, 64 states have (on average 4.265625) internal successors, (273), 64 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:40,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:40,347 INFO L93 Difference]: Finished difference Result 318 states and 319 transitions. [2024-11-28 03:33:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-28 03:33:40,348 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.265625) internal successors, (273), 64 states have internal predecessors, (273), 0 states have call successors, (0), 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 192 [2024-11-28 03:33:40,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:40,349 INFO L225 Difference]: With dead ends: 318 [2024-11-28 03:33:40,349 INFO L226 Difference]: Without dead ends: 200 [2024-11-28 03:33:40,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=253, Invalid=6389, Unknown=0, NotChecked=0, Total=6642 [2024-11-28 03:33:40,350 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 43 mSDsluCounter, 3762 mSDsCounter, 0 mSdLazyCounter, 5037 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3848 SdHoareTripleChecker+Invalid, 5053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:40,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3848 Invalid, 5053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 5037 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 03:33:40,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-28 03:33:40,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2024-11-28 03:33:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.010204081632653) internal successors, (198), 196 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2024-11-28 03:33:40,356 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 192 [2024-11-28 03:33:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:40,356 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2024-11-28 03:33:40,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.265625) internal successors, (273), 64 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2024-11-28 03:33:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-28 03:33:40,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:40,358 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:40,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 03:33:40,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-28 03:33:40,559 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:33:40,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:40,559 INFO L85 PathProgramCache]: Analyzing trace with hash 412766753, now seen corresponding path program 31 times [2024-11-28 03:33:40,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:40,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836948779] [2024-11-28 03:33:40,559 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:40,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 435 proven. 1095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:43,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:43,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836948779] [2024-11-28 03:33:43,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836948779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:43,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989382782] [2024-11-28 03:33:43,770 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:43,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:43,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:43,772 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:43,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 03:33:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:44,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 165 conjuncts are in the unsatisfiable core [2024-11-28 03:33:44,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 496 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:45,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:47,909 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 [2024-11-28 03:33:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 496 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:48,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989382782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:48,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:48,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39, 39] total 79 [2024-11-28 03:33:48,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233461455] [2024-11-28 03:33:48,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:48,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-28 03:33:48,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:48,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-28 03:33:48,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=5553, Unknown=0, NotChecked=0, Total=6320 [2024-11-28 03:33:48,985 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand has 80 states, 79 states have (on average 5.037974683544304) internal successors, (398), 80 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:51,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:51,678 INFO L93 Difference]: Finished difference Result 210 states and 211 transitions. [2024-11-28 03:33:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 03:33:51,680 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 5.037974683544304) internal successors, (398), 80 states have internal predecessors, (398), 0 states have call successors, (0), 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 [2024-11-28 03:33:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:51,682 INFO L225 Difference]: With dead ends: 210 [2024-11-28 03:33:51,682 INFO L226 Difference]: Without dead ends: 210 [2024-11-28 03:33:51,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 332 SyntacticMatches, 18 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3379 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=804, Invalid=5676, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 03:33:51,683 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 20 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 3216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:51,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2618 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3216 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 03:33:51,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-28 03:33:51,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 204. [2024-11-28 03:33:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.0098522167487685) internal successors, (205), 203 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:51,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2024-11-28 03:33:51,689 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 196 [2024-11-28 03:33:51,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:51,690 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2024-11-28 03:33:51,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 5.037974683544304) internal successors, (398), 80 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:51,690 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2024-11-28 03:33:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-28 03:33:51,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:51,692 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:51,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 03:33:51,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-28 03:33:51,893 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:33:51,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1118670788, now seen corresponding path program 32 times [2024-11-28 03:33:51,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:51,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274925861] [2024-11-28 03:33:51,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:51,962 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:51,962 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 86 proven. 1564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:55,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:55,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274925861] [2024-11-28 03:33:55,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274925861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:55,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576010361] [2024-11-28 03:33:55,146 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:55,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:55,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:55,148 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:55,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 03:33:55,557 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:55,557 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:55,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 189 conjuncts are in the unsatisfiable core [2024-11-28 03:33:55,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:56,839 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 [2024-11-28 03:33:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 86 proven. 1564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:57,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:57,502 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 [2024-11-28 03:33:57,505 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 [2024-11-28 03:33:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 86 proven. 1564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:57,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576010361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:57,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:57,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 67 [2024-11-28 03:33:57,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588098337] [2024-11-28 03:33:57,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:57,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-28 03:33:57,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:57,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-28 03:33:57,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=4255, Unknown=0, NotChecked=0, Total=4422 [2024-11-28 03:33:57,789 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand has 67 states, 67 states have (on average 4.298507462686567) internal successors, (288), 67 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:02,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:02,016 INFO L93 Difference]: Finished difference Result 336 states and 337 transitions. [2024-11-28 03:34:02,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-28 03:34:02,017 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.298507462686567) internal successors, (288), 67 states have internal predecessors, (288), 0 states have call successors, (0), 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 [2024-11-28 03:34:02,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:02,018 INFO L225 Difference]: With dead ends: 336 [2024-11-28 03:34:02,018 INFO L226 Difference]: Without dead ends: 211 [2024-11-28 03:34:02,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=265, Invalid=7045, Unknown=0, NotChecked=0, Total=7310 [2024-11-28 03:34:02,019 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 48 mSDsluCounter, 4215 mSDsCounter, 0 mSdLazyCounter, 5584 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 4306 SdHoareTripleChecker+Invalid, 5601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 5584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:02,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 4306 Invalid, 5601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 5584 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 03:34:02,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-28 03:34:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2024-11-28 03:34:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 207 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) [2024-11-28 03:34:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-11-28 03:34:02,024 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 203 [2024-11-28 03:34:02,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:02,025 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-11-28 03:34:02,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.298507462686567) internal successors, (288), 67 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:02,025 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-11-28 03:34:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-28 03:34:02,026 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:02,026 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:02,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 03:34:02,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:02,230 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:34:02,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash 524318069, now seen corresponding path program 33 times [2024-11-28 03:34:02,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:02,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346764121] [2024-11-28 03:34:02,231 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:34:02,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:02,309 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-28 03:34:02,309 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 496 proven. 1223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:04,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:04,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346764121] [2024-11-28 03:34:04,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346764121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:04,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388601175] [2024-11-28 03:34:04,977 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:34:04,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:04,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:04,979 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:04,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 03:34:06,191 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-28 03:34:06,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:06,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 141 conjuncts are in the unsatisfiable core [2024-11-28 03:34:06,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:06,210 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 [2024-11-28 03:34:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 561 proven. 1158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:07,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 561 proven. 1158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:10,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388601175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:10,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:10,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 102 [2024-11-28 03:34:10,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224963728] [2024-11-28 03:34:10,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:10,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-28 03:34:10,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:10,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-28 03:34:10,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1687, Invalid=8819, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 03:34:10,716 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 103 states, 102 states have (on average 4.852941176470588) internal successors, (495), 103 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:12,565 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2024-11-28 03:34:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 03:34:12,565 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 4.852941176470588) internal successors, (495), 103 states have internal predecessors, (495), 0 states have call successors, (0), 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 207 [2024-11-28 03:34:12,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:12,567 INFO L225 Difference]: With dead ends: 221 [2024-11-28 03:34:12,567 INFO L226 Difference]: Without dead ends: 221 [2024-11-28 03:34:12,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6336 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2289, Invalid=12231, Unknown=0, NotChecked=0, Total=14520 [2024-11-28 03:34:12,569 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 221 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:12,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 428 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:34:12,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-28 03:34:12,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 215. [2024-11-28 03:34:12,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 214 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2024-11-28 03:34:12,574 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 207 [2024-11-28 03:34:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:12,575 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2024-11-28 03:34:12,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 4.852941176470588) internal successors, (495), 103 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:12,575 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2024-11-28 03:34:12,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-28 03:34:12,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:12,577 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:12,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 03:34:12,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:12,777 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:34:12,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:12,778 INFO L85 PathProgramCache]: Analyzing trace with hash -286153112, now seen corresponding path program 34 times [2024-11-28 03:34:12,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:12,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200499713] [2024-11-28 03:34:12,778 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:34:12,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:12,849 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:34:12,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 91 proven. 1755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:16,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200499713] [2024-11-28 03:34:16,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200499713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:16,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029135188] [2024-11-28 03:34:16,782 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:34:16,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:16,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:16,784 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:16,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 03:34:18,852 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:34:18,852 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:18,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 199 conjuncts are in the unsatisfiable core [2024-11-28 03:34:18,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:20,428 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 [2024-11-28 03:34:20,880 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 [2024-11-28 03:34:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 91 proven. 1755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:20,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:21,188 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 [2024-11-28 03:34:21,192 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 [2024-11-28 03:34:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 91 proven. 1755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:21,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029135188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:21,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:21,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 70 [2024-11-28 03:34:21,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469968665] [2024-11-28 03:34:21,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:21,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-28 03:34:21,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:21,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-28 03:34:21,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=4656, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 03:34:21,549 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 70 states, 70 states have (on average 4.328571428571428) internal successors, (303), 70 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:26,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:26,194 INFO L93 Difference]: Finished difference Result 354 states and 355 transitions. [2024-11-28 03:34:26,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-28 03:34:26,194 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.328571428571428) internal successors, (303), 70 states have internal predecessors, (303), 0 states have call successors, (0), 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 214 [2024-11-28 03:34:26,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:26,195 INFO L225 Difference]: With dead ends: 354 [2024-11-28 03:34:26,195 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 03:34:26,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=277, Invalid=7733, Unknown=0, NotChecked=0, Total=8010 [2024-11-28 03:34:26,196 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 50 mSDsluCounter, 5143 mSDsCounter, 0 mSdLazyCounter, 6705 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5239 SdHoareTripleChecker+Invalid, 6723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 6705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:26,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5239 Invalid, 6723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 6705 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 03:34:26,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 03:34:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 219. [2024-11-28 03:34:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.0091743119266054) internal successors, (220), 218 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) [2024-11-28 03:34:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2024-11-28 03:34:26,201 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 214 [2024-11-28 03:34:26,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:26,201 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2024-11-28 03:34:26,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.328571428571428) internal successors, (303), 70 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2024-11-28 03:34:26,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-28 03:34:26,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:26,203 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:26,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 03:34:26,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:26,404 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:34:26,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:26,404 INFO L85 PathProgramCache]: Analyzing trace with hash -619949169, now seen corresponding path program 35 times [2024-11-28 03:34:26,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:26,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915142414] [2024-11-28 03:34:26,406 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:34:26,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:26,505 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-28 03:34:26,505 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 630 proven. 1289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:29,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:29,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915142414] [2024-11-28 03:34:29,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915142414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:29,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650166444] [2024-11-28 03:34:29,168 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:34:29,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:29,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:29,170 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:29,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 03:34:29,882 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-28 03:34:29,882 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:29,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 187 conjuncts are in the unsatisfiable core [2024-11-28 03:34:29,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:29,907 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 [2024-11-28 03:34:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 630 proven. 1289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:31,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 630 proven. 1289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:36,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650166444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:36,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:36,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 42] total 105 [2024-11-28 03:34:36,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698150378] [2024-11-28 03:34:36,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:36,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-11-28 03:34:36,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:36,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-11-28 03:34:36,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1359, Invalid=9771, Unknown=0, NotChecked=0, Total=11130 [2024-11-28 03:34:36,226 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand has 106 states, 105 states have (on average 4.933333333333334) internal successors, (518), 106 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:38,816 INFO L93 Difference]: Finished difference Result 232 states and 233 transitions. [2024-11-28 03:34:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 03:34:38,817 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 4.933333333333334) internal successors, (518), 106 states have internal predecessors, (518), 0 states have call successors, (0), 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 218 [2024-11-28 03:34:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:38,818 INFO L225 Difference]: With dead ends: 232 [2024-11-28 03:34:38,818 INFO L226 Difference]: Without dead ends: 232 [2024-11-28 03:34:38,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3165 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1421, Invalid=9921, Unknown=0, NotChecked=0, Total=11342 [2024-11-28 03:34:38,820 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 20 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 4150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3473 SdHoareTripleChecker+Invalid, 4151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:38,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3473 Invalid, 4151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4150 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 03:34:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-28 03:34:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 226. [2024-11-28 03:34:38,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.008888888888889) internal successors, (227), 225 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2024-11-28 03:34:38,824 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 218 [2024-11-28 03:34:38,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:38,825 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2024-11-28 03:34:38,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 4.933333333333334) internal successors, (518), 106 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:38,825 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2024-11-28 03:34:38,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-28 03:34:38,826 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:38,826 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:38,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 03:34:39,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-28 03:34:39,027 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:34:39,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash 982423310, now seen corresponding path program 36 times [2024-11-28 03:34:39,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:39,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615129076] [2024-11-28 03:34:39,028 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:34:39,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:39,161 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-28 03:34:39,161 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2053 backedges. 561 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:43,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:43,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615129076] [2024-11-28 03:34:43,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615129076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:43,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981845231] [2024-11-28 03:34:43,501 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:34:43,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:43,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:43,502 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:43,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 03:34:44,864 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-28 03:34:44,865 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:44,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 209 conjuncts are in the unsatisfiable core [2024-11-28 03:34:44,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:46,013 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 [2024-11-28 03:34:47,715 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 [2024-11-28 03:34:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2053 backedges. 96 proven. 1957 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:47,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:48,258 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 [2024-11-28 03:34:48,262 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 [2024-11-28 03:34:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2053 backedges. 96 proven. 1957 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:48,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981845231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:48,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:48,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-11-28 03:34:48,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105732606] [2024-11-28 03:34:48,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:48,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-28 03:34:48,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:48,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-28 03:34:48,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=8323, Unknown=0, NotChecked=0, Total=8930 [2024-11-28 03:34:48,678 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand has 95 states, 95 states have (on average 4.757894736842105) internal successors, (452), 95 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:58,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:58,019 INFO L93 Difference]: Finished difference Result 385 states and 386 transitions. [2024-11-28 03:34:58,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-28 03:34:58,020 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 4.757894736842105) internal successors, (452), 95 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2024-11-28 03:34:58,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:58,021 INFO L225 Difference]: With dead ends: 385 [2024-11-28 03:34:58,021 INFO L226 Difference]: Without dead ends: 246 [2024-11-28 03:34:58,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7666 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=2380, Invalid=30200, Unknown=0, NotChecked=0, Total=32580 [2024-11-28 03:34:58,024 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 395 mSDsluCounter, 4814 mSDsCounter, 0 mSdLazyCounter, 6370 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 4915 SdHoareTripleChecker+Invalid, 6426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 6370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:58,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 4915 Invalid, 6426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 6370 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 03:34:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-28 03:34:58,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 237. [2024-11-28 03:34:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.0084745762711864) internal successors, (238), 236 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) [2024-11-28 03:34:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2024-11-28 03:34:58,033 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 225 [2024-11-28 03:34:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:58,033 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2024-11-28 03:34:58,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 4.757894736842105) internal successors, (452), 95 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2024-11-28 03:34:58,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-28 03:34:58,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:58,035 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:58,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 03:34:58,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 03:34:58,236 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:34:58,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:58,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1898018794, now seen corresponding path program 37 times [2024-11-28 03:34:58,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:58,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783325806] [2024-11-28 03:34:58,237 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:34:58,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 101 proven. 2170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:01,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783325806] [2024-11-28 03:35:01,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783325806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311503361] [2024-11-28 03:35:01,798 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:35:01,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:01,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:01,799 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:01,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 03:35:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:02,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 219 conjuncts are in the unsatisfiable core [2024-11-28 03:35:02,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:03,540 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 [2024-11-28 03:35:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 101 proven. 2170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:03,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:04,144 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 [2024-11-28 03:35:04,146 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 [2024-11-28 03:35:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 101 proven. 2170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:04,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311503361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:04,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:04,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 76 [2024-11-28 03:35:04,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180188004] [2024-11-28 03:35:04,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:04,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-28 03:35:04,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:04,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-28 03:35:04,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=5512, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 03:35:04,400 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand has 76 states, 76 states have (on average 4.381578947368421) internal successors, (333), 76 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:09,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:09,307 INFO L93 Difference]: Finished difference Result 390 states and 391 transitions. [2024-11-28 03:35:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-28 03:35:09,308 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 4.381578947368421) internal successors, (333), 76 states have internal predecessors, (333), 0 states have call successors, (0), 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 236 [2024-11-28 03:35:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:09,308 INFO L225 Difference]: With dead ends: 390 [2024-11-28 03:35:09,308 INFO L226 Difference]: Without dead ends: 244 [2024-11-28 03:35:09,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=301, Invalid=9205, Unknown=0, NotChecked=0, Total=9506 [2024-11-28 03:35:09,309 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 54 mSDsluCounter, 6146 mSDsCounter, 0 mSdLazyCounter, 7989 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 6252 SdHoareTripleChecker+Invalid, 8009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 7989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:09,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 6252 Invalid, 8009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 7989 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 03:35:09,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-28 03:35:09,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 241. [2024-11-28 03:35:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.0083333333333333) internal successors, (242), 240 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2024-11-28 03:35:09,314 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 236 [2024-11-28 03:35:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:09,314 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2024-11-28 03:35:09,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 4.381578947368421) internal successors, (333), 76 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2024-11-28 03:35:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-28 03:35:09,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:09,316 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:09,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 03:35:09,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-28 03:35:09,517 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:35:09,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:09,517 INFO L85 PathProgramCache]: Analyzing trace with hash -577253891, now seen corresponding path program 38 times [2024-11-28 03:35:09,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:09,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579257079] [2024-11-28 03:35:09,517 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:35:09,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:09,579 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:35:09,580 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 703 proven. 1649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:13,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:13,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579257079] [2024-11-28 03:35:13,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579257079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:13,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403229759] [2024-11-28 03:35:13,019 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:35:13,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:13,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:13,021 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:13,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 03:35:13,434 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:35:13,434 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:13,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 204 conjuncts are in the unsatisfiable core [2024-11-28 03:35:13,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 780 proven. 1572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:15,310 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:17,252 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 [2024-11-28 03:35:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 780 proven. 1572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:19,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403229759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:19,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:19,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 115 [2024-11-28 03:35:19,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392718210] [2024-11-28 03:35:19,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:19,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-11-28 03:35:19,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:19,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-11-28 03:35:19,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1814, Invalid=11526, Unknown=0, NotChecked=0, Total=13340 [2024-11-28 03:35:19,099 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand has 116 states, 115 states have (on average 4.982608695652174) internal successors, (573), 116 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:21,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:21,803 INFO L93 Difference]: Finished difference Result 254 states and 255 transitions. [2024-11-28 03:35:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-28 03:35:21,804 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 4.982608695652174) internal successors, (573), 116 states have internal predecessors, (573), 0 states have call successors, (0), 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 240 [2024-11-28 03:35:21,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:21,805 INFO L225 Difference]: With dead ends: 254 [2024-11-28 03:35:21,805 INFO L226 Difference]: Without dead ends: 254 [2024-11-28 03:35:21,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5236 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1881, Invalid=11691, Unknown=0, NotChecked=0, Total=13572 [2024-11-28 03:35:21,806 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 14 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 4809 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4131 SdHoareTripleChecker+Invalid, 4810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:21,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4131 Invalid, 4810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4809 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 03:35:21,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-28 03:35:21,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2024-11-28 03:35:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.008097165991903) internal successors, (249), 247 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2024-11-28 03:35:21,809 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 240 [2024-11-28 03:35:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:21,809 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2024-11-28 03:35:21,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 4.982608695652174) internal successors, (573), 116 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:21,809 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2024-11-28 03:35:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-28 03:35:21,810 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:21,810 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:21,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-28 03:35:22,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 03:35:22,010 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:35:22,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:22,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1204233440, now seen corresponding path program 39 times [2024-11-28 03:35:22,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:22,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002268282] [2024-11-28 03:35:22,011 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:35:22,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:22,146 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-28 03:35:22,146 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 106 proven. 2394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:25,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:25,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002268282] [2024-11-28 03:35:25,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002268282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:25,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068761240] [2024-11-28 03:35:25,770 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:35:25,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:25,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:25,773 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:25,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 03:35:28,231 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-28 03:35:28,231 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:28,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 229 conjuncts are in the unsatisfiable core [2024-11-28 03:35:28,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:29,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 03:35:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 106 proven. 2394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:30,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:30,379 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 [2024-11-28 03:35:30,380 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 [2024-11-28 03:35:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 106 proven. 2394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:30,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068761240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:30,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:30,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 79 [2024-11-28 03:35:30,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815020955] [2024-11-28 03:35:30,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:30,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-28 03:35:30,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:30,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-28 03:35:30,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=5967, Unknown=0, NotChecked=0, Total=6162 [2024-11-28 03:35:30,645 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 79 states, 79 states have (on average 4.405063291139241) internal successors, (348), 79 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:35,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:35,580 INFO L93 Difference]: Finished difference Result 408 states and 409 transitions. [2024-11-28 03:35:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-28 03:35:35,581 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.405063291139241) internal successors, (348), 79 states have internal predecessors, (348), 0 states have call successors, (0), 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 247 [2024-11-28 03:35:35,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:35,582 INFO L225 Difference]: With dead ends: 408 [2024-11-28 03:35:35,582 INFO L226 Difference]: Without dead ends: 255 [2024-11-28 03:35:35,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=313, Invalid=9989, Unknown=0, NotChecked=0, Total=10302 [2024-11-28 03:35:35,583 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 56 mSDsluCounter, 6317 mSDsCounter, 0 mSdLazyCounter, 8197 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6428 SdHoareTripleChecker+Invalid, 8218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 8197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:35,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6428 Invalid, 8218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 8197 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 03:35:35,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-28 03:35:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 252. [2024-11-28 03:35:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.0079681274900398) internal successors, (253), 251 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) [2024-11-28 03:35:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 253 transitions. [2024-11-28 03:35:35,586 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 253 transitions. Word has length 247 [2024-11-28 03:35:35,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:35,586 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 253 transitions. [2024-11-28 03:35:35,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.405063291139241) internal successors, (348), 79 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 253 transitions. [2024-11-28 03:35:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-28 03:35:35,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:35,587 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:35,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-28 03:35:35,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:35,788 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:35:35,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:35,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1907558247, now seen corresponding path program 40 times [2024-11-28 03:35:35,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:35,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407773152] [2024-11-28 03:35:35,788 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:35:35,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:35,832 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:35:35,832 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2585 backedges. 861 proven. 1724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:38,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:38,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407773152] [2024-11-28 03:35:38,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407773152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:38,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218138951] [2024-11-28 03:35:38,989 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:35:38,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:38,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:38,991 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:38,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 03:35:40,526 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:35:40,526 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:40,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 214 conjuncts are in the unsatisfiable core [2024-11-28 03:35:40,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:40,552 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 [2024-11-28 03:35:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2585 backedges. 861 proven. 1724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:42,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2585 backedges. 861 proven. 1724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:48,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218138951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:48,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:48,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 120 [2024-11-28 03:35:48,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370512670] [2024-11-28 03:35:48,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:48,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-11-28 03:35:48,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:48,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-11-28 03:35:48,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1767, Invalid=12753, Unknown=0, NotChecked=0, Total=14520 [2024-11-28 03:35:48,024 INFO L87 Difference]: Start difference. First operand 252 states and 253 transitions. Second operand has 121 states, 120 states have (on average 4.941666666666666) internal successors, (593), 121 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:51,128 INFO L93 Difference]: Finished difference Result 265 states and 266 transitions. [2024-11-28 03:35:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-28 03:35:51,129 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 4.941666666666666) internal successors, (593), 121 states have internal predecessors, (593), 0 states have call successors, (0), 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 251 [2024-11-28 03:35:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:51,130 INFO L225 Difference]: With dead ends: 265 [2024-11-28 03:35:51,130 INFO L226 Difference]: Without dead ends: 265 [2024-11-28 03:35:51,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4158 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1838, Invalid=12924, Unknown=0, NotChecked=0, Total=14762 [2024-11-28 03:35:51,131 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 17 mSDsluCounter, 4223 mSDsCounter, 0 mSdLazyCounter, 5279 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 5280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:51,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4343 Invalid, 5280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5279 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 03:35:51,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-28 03:35:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2024-11-28 03:35:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.0077519379844961) internal successors, (260), 258 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2024-11-28 03:35:51,136 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 251 [2024-11-28 03:35:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:51,137 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2024-11-28 03:35:51,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 120 states have (on average 4.941666666666666) internal successors, (593), 121 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:51,137 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2024-11-28 03:35:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-28 03:35:51,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:51,138 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:51,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-28 03:35:51,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:51,339 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:35:51,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1878650172, now seen corresponding path program 41 times [2024-11-28 03:35:51,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:51,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569469882] [2024-11-28 03:35:51,340 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:35:51,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:51,463 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-28 03:35:51,463 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2740 backedges. 111 proven. 2629 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:55,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:55,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569469882] [2024-11-28 03:35:55,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569469882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:55,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223034385] [2024-11-28 03:35:55,167 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:35:55,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:55,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:55,169 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:55,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 03:35:56,133 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-28 03:35:56,133 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:56,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 230 conjuncts are in the unsatisfiable core [2024-11-28 03:35:56,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:56,153 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 [2024-11-28 03:35:57,966 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 [2024-11-28 03:36:05,105 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:36:05,105 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 19 treesize of output 12 [2024-11-28 03:36:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2740 backedges. 861 proven. 1877 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:05,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:10,846 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 [2024-11-28 03:36:10,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-28 03:36:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2740 backedges. 861 proven. 1879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:17,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223034385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:17,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:17,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 52] total 156 [2024-11-28 03:36:17,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992147279] [2024-11-28 03:36:17,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:17,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2024-11-28 03:36:17,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:17,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2024-11-28 03:36:17,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1444, Invalid=22734, Unknown=2, NotChecked=0, Total=24180 [2024-11-28 03:36:17,164 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand has 156 states, 156 states have (on average 4.923076923076923) internal successors, (768), 156 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:25,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:36:33,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:36:38,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:36:42,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:36:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:43,031 INFO L93 Difference]: Finished difference Result 446 states and 447 transitions. [2024-11-28 03:36:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-28 03:36:43,032 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 156 states have (on average 4.923076923076923) internal successors, (768), 156 states have internal predecessors, (768), 0 states have call successors, (0), 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 258 [2024-11-28 03:36:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:43,033 INFO L225 Difference]: With dead ends: 446 [2024-11-28 03:36:43,033 INFO L226 Difference]: Without dead ends: 286 [2024-11-28 03:36:43,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5866 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=2686, Invalid=42044, Unknown=2, NotChecked=0, Total=44732 [2024-11-28 03:36:43,037 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 52 mSDsluCounter, 8906 mSDsCounter, 0 mSdLazyCounter, 11447 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 9026 SdHoareTripleChecker+Invalid, 11455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11447 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:43,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 9026 Invalid, 11455 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 11447 Invalid, 6 Unknown, 0 Unchecked, 18.9s Time] [2024-11-28 03:36:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-28 03:36:43,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 277. [2024-11-28 03:36:43,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.0072463768115942) internal successors, (278), 276 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2024-11-28 03:36:43,042 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 258 [2024-11-28 03:36:43,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:43,042 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2024-11-28 03:36:43,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 156 states have (on average 4.923076923076923) internal successors, (768), 156 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2024-11-28 03:36:43,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-28 03:36:43,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:43,044 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:43,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-28 03:36:43,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:43,244 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:36:43,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:43,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1227402357, now seen corresponding path program 42 times [2024-11-28 03:36:43,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:43,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382115618] [2024-11-28 03:36:43,245 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:36:43,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:43,380 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2024-11-28 03:36:43,381 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:50,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:50,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382115618] [2024-11-28 03:36:50,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382115618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:50,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197699742] [2024-11-28 03:36:50,106 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:36:50,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:50,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:50,108 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:50,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 03:36:55,166 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2024-11-28 03:36:55,166 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:55,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 247 conjuncts are in the unsatisfiable core [2024-11-28 03:36:55,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:57,670 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 [2024-11-28 03:37:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 280 proven. 2875 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:37:01,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:37:01,528 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 [2024-11-28 03:37:01,530 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 16 treesize of output 12 [2024-11-28 03:37:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 280 proven. 2875 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:37:01,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197699742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:37:01,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:37:01,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 111 [2024-11-28 03:37:01,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550657133] [2024-11-28 03:37:01,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:37:01,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-11-28 03:37:01,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:01,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-11-28 03:37:01,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=11978, Unknown=0, NotChecked=0, Total=12210 [2024-11-28 03:37:01,976 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand has 111 states, 111 states have (on average 4.954954954954955) internal successors, (550), 111 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:20,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:20,598 INFO L93 Difference]: Finished difference Result 451 states and 452 transitions. [2024-11-28 03:37:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-28 03:37:20,598 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 4.954954954954955) internal successors, (550), 111 states have internal predecessors, (550), 0 states have call successors, (0), 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 276 [2024-11-28 03:37:20,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:20,599 INFO L225 Difference]: With dead ends: 451 [2024-11-28 03:37:20,599 INFO L226 Difference]: Without dead ends: 284 [2024-11-28 03:37:20,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3322 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=1159, Invalid=32881, Unknown=0, NotChecked=0, Total=34040 [2024-11-28 03:37:20,600 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 54 mSDsluCounter, 11649 mSDsCounter, 0 mSdLazyCounter, 14412 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 11770 SdHoareTripleChecker+Invalid, 14481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 14412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:20,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 11770 Invalid, 14481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 14412 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-28 03:37:20,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-28 03:37:20,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 281. [2024-11-28 03:37:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 280 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2024-11-28 03:37:20,605 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 276 [2024-11-28 03:37:20,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:20,605 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2024-11-28 03:37:20,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 4.954954954954955) internal successors, (550), 111 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2024-11-28 03:37:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-28 03:37:20,607 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:20,607 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:20,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-28 03:37:20,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:20,808 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:37:20,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:20,808 INFO L85 PathProgramCache]: Analyzing trace with hash 682518130, now seen corresponding path program 43 times [2024-11-28 03:37:20,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:20,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960971267] [2024-11-28 03:37:20,808 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:37:20,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3253 backedges. 121 proven. 3132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:26,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:26,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960971267] [2024-11-28 03:37:26,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960971267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:26,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443157884] [2024-11-28 03:37:26,048 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:37:26,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:26,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:26,050 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:26,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-28 03:37:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:26,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 259 conjuncts are in the unsatisfiable core [2024-11-28 03:37:26,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:37:28,650 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 [2024-11-28 03:37:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3253 backedges. 121 proven. 3132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:29,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:37:29,407 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 [2024-11-28 03:37:29,409 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 [2024-11-28 03:37:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3253 backedges. 121 proven. 3132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:29,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443157884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:37:29,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:37:29,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 88 [2024-11-28 03:37:29,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585623195] [2024-11-28 03:37:29,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:37:29,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-28 03:37:29,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:29,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-28 03:37:29,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=7440, Unknown=0, NotChecked=0, Total=7656 [2024-11-28 03:37:29,719 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand has 88 states, 88 states have (on average 4.465909090909091) internal successors, (393), 88 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:36,147 INFO L93 Difference]: Finished difference Result 462 states and 463 transitions. [2024-11-28 03:37:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-28 03:37:36,148 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 4.465909090909091) internal successors, (393), 88 states have internal predecessors, (393), 0 states have call successors, (0), 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 280 [2024-11-28 03:37:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:36,149 INFO L225 Difference]: With dead ends: 462 [2024-11-28 03:37:36,149 INFO L226 Difference]: Without dead ends: 288 [2024-11-28 03:37:36,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=349, Invalid=12533, Unknown=0, NotChecked=0, Total=12882 [2024-11-28 03:37:36,151 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 62 mSDsluCounter, 7707 mSDsCounter, 0 mSdLazyCounter, 9957 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 7833 SdHoareTripleChecker+Invalid, 9981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 9957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:36,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 7833 Invalid, 9981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 9957 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-28 03:37:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-28 03:37:36,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 285. [2024-11-28 03:37:36,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.0070422535211268) internal successors, (286), 284 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) [2024-11-28 03:37:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2024-11-28 03:37:36,156 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 280 [2024-11-28 03:37:36,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:36,156 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2024-11-28 03:37:36,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 4.465909090909091) internal successors, (393), 88 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2024-11-28 03:37:36,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-28 03:37:36,158 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:36,158 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:36,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-28 03:37:36,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-28 03:37:36,359 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:37:36,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:36,359 INFO L85 PathProgramCache]: Analyzing trace with hash -513561127, now seen corresponding path program 44 times [2024-11-28 03:37:36,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:36,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144830419] [2024-11-28 03:37:36,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:37:36,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:36,413 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:37:36,413 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 1035 proven. 2315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:41,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:41,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144830419] [2024-11-28 03:37:41,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144830419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:41,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798535363] [2024-11-28 03:37:41,565 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:37:41,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:41,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:41,567 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:41,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-28 03:37:42,076 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:37:42,076 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:42,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 240 conjuncts are in the unsatisfiable core [2024-11-28 03:37:42,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:37:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 1128 proven. 2222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:44,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:37:47,443 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 [2024-11-28 03:37:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 1128 proven. 2222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:50,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798535363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:37:50,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:37:50,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 135 [2024-11-28 03:37:50,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488716181] [2024-11-28 03:37:50,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:37:50,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2024-11-28 03:37:50,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:50,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2024-11-28 03:37:50,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2504, Invalid=15856, Unknown=0, NotChecked=0, Total=18360 [2024-11-28 03:37:50,076 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand has 136 states, 135 states have (on average 5.014814814814815) internal successors, (677), 136 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:53,818 INFO L93 Difference]: Finished difference Result 298 states and 299 transitions. [2024-11-28 03:37:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-28 03:37:53,818 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 135 states have (on average 5.014814814814815) internal successors, (677), 136 states have internal predecessors, (677), 0 states have call successors, (0), 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 284 [2024-11-28 03:37:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:53,819 INFO L225 Difference]: With dead ends: 298 [2024-11-28 03:37:53,819 INFO L226 Difference]: Without dead ends: 298 [2024-11-28 03:37:53,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7336 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2583, Invalid=16049, Unknown=0, NotChecked=0, Total=18632 [2024-11-28 03:37:53,820 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 23 mSDsluCounter, 4611 mSDsCounter, 0 mSdLazyCounter, 5569 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4746 SdHoareTripleChecker+Invalid, 5570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:53,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4746 Invalid, 5570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5569 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 03:37:53,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-28 03:37:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 292. [2024-11-28 03:37:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.006872852233677) internal successors, (293), 291 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 293 transitions. [2024-11-28 03:37:53,825 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 293 transitions. Word has length 284 [2024-11-28 03:37:53,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:53,825 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 293 transitions. [2024-11-28 03:37:53,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 135 states have (on average 5.014814814814815) internal successors, (677), 136 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:53,826 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 293 transitions. [2024-11-28 03:37:53,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-28 03:37:53,827 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:53,827 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:53,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-28 03:37:54,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-28 03:37:54,028 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 03:37:54,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash -449514108, now seen corresponding path program 45 times [2024-11-28 03:37:54,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:54,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321346725] [2024-11-28 03:37:54,029 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:37:54,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:54,166 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-28 03:37:54,166 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3526 backedges. 126 proven. 3400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:59,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:59,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321346725] [2024-11-28 03:37:59,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321346725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:59,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198573844] [2024-11-28 03:37:59,058 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:37:59,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:59,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:59,060 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:59,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c79615-2bc3-43f0-b07a-719d70d1aca6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-28 03:38:03,058 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-28 03:38:03,059 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:03,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 202 conjuncts are in the unsatisfiable core [2024-11-28 03:38:03,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:03,085 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 [2024-11-28 03:38:05,032 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 [2024-11-28 03:38:44,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:38:44,296 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 18 treesize of output 19 [2024-11-28 03:38:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3526 backedges. 1128 proven. 2398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:45,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:38:58,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-28 03:38:58,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-28 03:39:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3526 backedges. 1128 proven. 2398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:03,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198573844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:39:03,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:39:03,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 175 [2024-11-28 03:39:03,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659072178] [2024-11-28 03:39:03,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:39:03,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-11-28 03:39:03,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:03,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-11-28 03:39:03,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3113, Invalid=27337, Unknown=0, NotChecked=0, Total=30450 [2024-11-28 03:39:03,235 INFO L87 Difference]: Start difference. First operand 292 states and 293 transitions. Second operand has 175 states, 175 states have (on average 4.954285714285715) internal successors, (867), 175 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:57,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]