./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c --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_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1 --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 f3d22aeda2fb15b9dd79854281ee0f5e475c0f7ee1551b76594f45703ddc81df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:35:30,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:35:30,132 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 10:35:30,137 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:35:30,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:35:30,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:35:30,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:35:30,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:35:30,159 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:35:30,159 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:35:30,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:35:30,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:35:30,160 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:35:30,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:35:30,160 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:35:30,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:35:30,160 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:35:30,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:35:30,161 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:35:30,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:35:30,161 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 10:35:30,161 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 10:35:30,161 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 10:35:30,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:35:30,161 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 10:35:30,161 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 10:35:30,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:35:30,161 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:35:30,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:35:30,161 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:35:30,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:35:30,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:35:30,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:35:30,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:35:30,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:35:30,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:35:30,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:35:30,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:35:30,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:35:30,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:35:30,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:35:30,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:35:30,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:35:30,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:35:30,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:35:30,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:35:30,163 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:35:30,163 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_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1 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 -> f3d22aeda2fb15b9dd79854281ee0f5e475c0f7ee1551b76594f45703ddc81df [2024-12-02 10:35:30,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:35:30,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:35:30,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:35:30,395 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:35:30,395 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:35:30,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2024-12-02 10:35:33,014 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/data/c1d996c87/d66792f322c649119225acbe418d15ef/FLAG7daa760bf [2024-12-02 10:35:33,243 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:35:33,243 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2024-12-02 10:35:33,248 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/data/c1d996c87/d66792f322c649119225acbe418d15ef/FLAG7daa760bf [2024-12-02 10:35:33,261 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/data/c1d996c87/d66792f322c649119225acbe418d15ef [2024-12-02 10:35:33,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:35:33,265 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:35:33,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:35:33,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:35:33,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:35:33,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21530003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33, skipping insertion in model container [2024-12-02 10:35:33,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,279 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:35:33,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:35:33,391 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:35:33,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:35:33,413 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:35:33,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33 WrapperNode [2024-12-02 10:35:33,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:35:33,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:35:33,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:35:33,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:35:33,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,435 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-12-02 10:35:33,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:35:33,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:35:33,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:35:33,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:35:33,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,443 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,454 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 1 writes are split as follows [1, 0]. [2024-12-02 10:35:33,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,460 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:35:33,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:35:33,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:35:33,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:35:33,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (1/1) ... [2024-12-02 10:35:33,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:35:33,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:33,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:35:33,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:35:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 10:35:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 10:35:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:35:33,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:35:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 10:35:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 10:35:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 10:35:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 10:35:33,565 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:35:33,566 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:35:33,712 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-12-02 10:35:33,712 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:35:33,720 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:35:33,720 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 10:35:33,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:35:33 BoogieIcfgContainer [2024-12-02 10:35:33,720 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:35:33,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:35:33,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:35:33,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:35:33,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:35:33" (1/3) ... [2024-12-02 10:35:33,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b5b315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:35:33, skipping insertion in model container [2024-12-02 10:35:33,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:35:33" (2/3) ... [2024-12-02 10:35:33,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b5b315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:35:33, skipping insertion in model container [2024-12-02 10:35:33,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:35:33" (3/3) ... [2024-12-02 10:35:33,728 INFO L128 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4.c [2024-12-02 10:35:33,740 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:35:33,741 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ArraysOfVariableLength4.c that has 1 procedures, 29 locations, 1 initial locations, 3 loop locations, and 8 error locations. [2024-12-02 10:35:33,772 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:35:33,783 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;@57e83c75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:35:33,783 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-12-02 10:35:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.75) internal successors, (35), 28 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) [2024-12-02 10:35:33,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 10:35:33,790 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:33,790 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 10:35:33,791 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:33,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:33,795 INFO L85 PathProgramCache]: Analyzing trace with hash 890553482, now seen corresponding path program 1 times [2024-12-02 10:35:33,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:33,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712117498] [2024-12-02 10:35:33,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:33,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:33,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:33,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712117498] [2024-12-02 10:35:33,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712117498] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:35:33,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:35:33,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:35:33,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827373770] [2024-12-02 10:35:33,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:35:33,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:35:33,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:33,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:35:33,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:35:33,939 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.75) internal successors, (35), 28 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:33,949 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2024-12-02 10:35:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:35:33,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-12-02 10:35:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:33,957 INFO L225 Difference]: With dead ends: 29 [2024-12-02 10:35:33,957 INFO L226 Difference]: Without dead ends: 27 [2024-12-02 10:35:33,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:35:33,962 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:33,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:35:33,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-12-02 10:35:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-12-02 10:35:33,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-12-02 10:35:33,991 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 6 [2024-12-02 10:35:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:33,992 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-12-02 10:35:33,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-12-02 10:35:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 10:35:33,992 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:33,992 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 10:35:33,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:35:33,993 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:33,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash 889601163, now seen corresponding path program 1 times [2024-12-02 10:35:33,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:33,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414530655] [2024-12-02 10:35:33,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:33,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:34,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:34,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414530655] [2024-12-02 10:35:34,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414530655] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:35:34,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:35:34,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:35:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778739932] [2024-12-02 10:35:34,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:35:34,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:35:34,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:34,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:35:34,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:35:34,092 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:34,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:34,132 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-12-02 10:35:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:35:34,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-12-02 10:35:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:34,133 INFO L225 Difference]: With dead ends: 33 [2024-12-02 10:35:34,134 INFO L226 Difference]: Without dead ends: 33 [2024-12-02 10:35:34,134 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 [2024-12-02 10:35:34,135 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:34,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 43 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:35:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-12-02 10:35:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2024-12-02 10:35:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 28 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) [2024-12-02 10:35:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-12-02 10:35:34,139 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2024-12-02 10:35:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:34,139 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-12-02 10:35:34,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-12-02 10:35:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 10:35:34,140 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:34,140 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 10:35:34,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:35:34,140 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:34,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:34,141 INFO L85 PathProgramCache]: Analyzing trace with hash 889689543, now seen corresponding path program 1 times [2024-12-02 10:35:34,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:34,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005226076] [2024-12-02 10:35:34,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:34,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:34,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:34,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005226076] [2024-12-02 10:35:34,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005226076] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:35:34,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:35:34,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:35:34,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717130607] [2024-12-02 10:35:34,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:35:34,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:35:34,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:34,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:35:34,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:35:34,205 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:34,239 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2024-12-02 10:35:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:35:34,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-12-02 10:35:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:34,240 INFO L225 Difference]: With dead ends: 52 [2024-12-02 10:35:34,241 INFO L226 Difference]: Without dead ends: 52 [2024-12-02 10:35:34,241 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 [2024-12-02 10:35:34,242 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:34,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 40 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:35:34,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-12-02 10:35:34,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 31. [2024-12-02 10:35:34,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 30 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) [2024-12-02 10:35:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-12-02 10:35:34,246 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 6 [2024-12-02 10:35:34,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:34,247 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-12-02 10:35:34,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:34,247 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-12-02 10:35:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 10:35:34,247 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:34,247 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:34,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:35:34,247 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:34,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:34,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1807832333, now seen corresponding path program 1 times [2024-12-02 10:35:34,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:34,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380945255] [2024-12-02 10:35:34,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:34,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:34,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:34,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380945255] [2024-12-02 10:35:34,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380945255] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:35:34,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:35:34,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:35:34,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483080141] [2024-12-02 10:35:34,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:35:34,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:35:34,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:34,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:35:34,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:35:34,339 INFO L87 Difference]: Start difference. First operand 31 states and 35 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) [2024-12-02 10:35:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:34,394 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-12-02 10:35:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:35:34,394 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 [2024-12-02 10:35:34,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:34,395 INFO L225 Difference]: With dead ends: 30 [2024-12-02 10:35:34,395 INFO L226 Difference]: Without dead ends: 30 [2024-12-02 10:35:34,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:35:34,396 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:34,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 30 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:35:34,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-12-02 10:35:34,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-12-02 10:35:34,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 29 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) [2024-12-02 10:35:34,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-12-02 10:35:34,399 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 7 [2024-12-02 10:35:34,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:34,399 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-12-02 10:35:34,399 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) [2024-12-02 10:35:34,399 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-12-02 10:35:34,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 10:35:34,399 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:34,399 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:34,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:35:34,400 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:34,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:34,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1807832334, now seen corresponding path program 1 times [2024-12-02 10:35:34,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:34,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984801313] [2024-12-02 10:35:34,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:34,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:34,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:34,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984801313] [2024-12-02 10:35:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984801313] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:35:34,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:35:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:35:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255154702] [2024-12-02 10:35:34,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:35:34,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:35:34,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:34,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:35:34,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:35:34,539 INFO L87 Difference]: Start difference. First operand 30 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) [2024-12-02 10:35:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:34,610 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-12-02 10:35:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:35:34,610 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 [2024-12-02 10:35:34,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:34,611 INFO L225 Difference]: With dead ends: 33 [2024-12-02 10:35:34,611 INFO L226 Difference]: Without dead ends: 33 [2024-12-02 10:35:34,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:35:34,612 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 31 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:34,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:35:34,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-12-02 10:35:34,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-12-02 10:35:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 30 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) [2024-12-02 10:35:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-12-02 10:35:34,615 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 7 [2024-12-02 10:35:34,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:34,616 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-12-02 10:35:34,616 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) [2024-12-02 10:35:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-12-02 10:35:34,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-02 10:35:34,616 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:34,616 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:34,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:35:34,617 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:34,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:34,617 INFO L85 PathProgramCache]: Analyzing trace with hash 208295028, now seen corresponding path program 1 times [2024-12-02 10:35:34,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:34,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076682548] [2024-12-02 10:35:34,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:34,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:34,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:34,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076682548] [2024-12-02 10:35:34,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076682548] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:35:34,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:35:34,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:35:34,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613918602] [2024-12-02 10:35:34,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:35:34,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:35:34,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:34,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:35:34,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:35:34,670 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:34,690 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-12-02 10:35:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:35:34,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-12-02 10:35:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:34,691 INFO L225 Difference]: With dead ends: 32 [2024-12-02 10:35:34,691 INFO L226 Difference]: Without dead ends: 32 [2024-12-02 10:35:34,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:35:34,692 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:34,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 44 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:35:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-12-02 10:35:34,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-12-02 10:35:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.4166666666666667) 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) [2024-12-02 10:35:34,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-12-02 10:35:34,695 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 8 [2024-12-02 10:35:34,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:34,695 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-12-02 10:35:34,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:34,695 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-12-02 10:35:34,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-02 10:35:34,696 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:34,696 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:34,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:35:34,696 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:34,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:34,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1756862701, now seen corresponding path program 1 times [2024-12-02 10:35:34,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:34,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304857843] [2024-12-02 10:35:34,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:34,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:34,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:34,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304857843] [2024-12-02 10:35:34,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304857843] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:34,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472388734] [2024-12-02 10:35:34,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:34,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:34,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:34,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:34,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:35:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:34,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:35:34,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:34,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:35:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:34,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472388734] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:35:34,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:35:34,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-12-02 10:35:34,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958154667] [2024-12-02 10:35:34,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:35:34,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:35:34,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:34,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:35:34,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:35:34,904 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:34,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:34,980 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2024-12-02 10:35:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:35:34,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-12-02 10:35:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:34,982 INFO L225 Difference]: With dead ends: 45 [2024-12-02 10:35:34,982 INFO L226 Difference]: Without dead ends: 45 [2024-12-02 10:35:34,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:35:34,983 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:34,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 60 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:35:34,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-12-02 10:35:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-12-02 10:35:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-12-02 10:35:34,987 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 10 [2024-12-02 10:35:34,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:34,987 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-12-02 10:35:34,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:34,988 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-12-02 10:35:34,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-02 10:35:34,988 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:34,988 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:34,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:35:35,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 10:35:35,189 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:35,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:35,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1371831174, now seen corresponding path program 1 times [2024-12-02 10:35:35,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:35,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60172194] [2024-12-02 10:35:35,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:35,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:35,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:35,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60172194] [2024-12-02 10:35:35,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60172194] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:35,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179573483] [2024-12-02 10:35:35,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:35,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:35,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:35,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:35,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:35:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:35,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 10:35:35,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:35,424 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 [2024-12-02 10:35:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:35,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:35:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:35,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179573483] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:35:35,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:35:35,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-12-02 10:35:35,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381382201] [2024-12-02 10:35:35,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:35:35,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:35:35,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:35,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:35:35,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:35:35,613 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:35,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:35,747 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2024-12-02 10:35:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:35:35,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-12-02 10:35:35,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:35,748 INFO L225 Difference]: With dead ends: 46 [2024-12-02 10:35:35,749 INFO L226 Difference]: Without dead ends: 46 [2024-12-02 10:35:35,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:35:35,749 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 98 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:35,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 41 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:35:35,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-12-02 10:35:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2024-12-02 10:35:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 42 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-12-02 10:35:35,753 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 11 [2024-12-02 10:35:35,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:35,754 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-12-02 10:35:35,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-12-02 10:35:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-02 10:35:35,754 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:35,754 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:35,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:35:35,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:35,955 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:35,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:35,955 INFO L85 PathProgramCache]: Analyzing trace with hash -422839044, now seen corresponding path program 1 times [2024-12-02 10:35:35,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:35,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810950788] [2024-12-02 10:35:35,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:35,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:36,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:36,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810950788] [2024-12-02 10:35:36,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810950788] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:36,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54496726] [2024-12-02 10:35:36,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:36,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:36,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:36,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:36,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:35:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:36,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:35:36,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:36,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:35:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:36,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54496726] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:35:36,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:35:36,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-12-02 10:35:36,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428742115] [2024-12-02 10:35:36,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:35:36,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:35:36,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:36,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:35:36,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:35:36,123 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:36,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:36,166 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2024-12-02 10:35:36,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:35:36,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-12-02 10:35:36,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:36,167 INFO L225 Difference]: With dead ends: 43 [2024-12-02 10:35:36,167 INFO L226 Difference]: Without dead ends: 43 [2024-12-02 10:35:36,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:35:36,168 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:36,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 61 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:35:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-12-02 10:35:36,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-12-02 10:35:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 42 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2024-12-02 10:35:36,171 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 12 [2024-12-02 10:35:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:36,171 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2024-12-02 10:35:36,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:36,172 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2024-12-02 10:35:36,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 10:35:36,172 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:36,172 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2024-12-02 10:35:36,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 10:35:36,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:36,373 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:36,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:36,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1566323029, now seen corresponding path program 2 times [2024-12-02 10:35:36,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:36,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408946119] [2024-12-02 10:35:36,374 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:35:36,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:36,391 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:35:36,391 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:35:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:36,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:36,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408946119] [2024-12-02 10:35:36,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408946119] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:36,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228352077] [2024-12-02 10:35:36,473 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:35:36,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:36,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:36,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:36,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:35:36,533 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:35:36,533 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:35:36,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 10:35:36,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:36,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:35:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:36,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228352077] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:35:36,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:35:36,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-12-02 10:35:36,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145106907] [2024-12-02 10:35:36,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:35:36,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 10:35:36,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:36,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 10:35:36,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:35:36,687 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 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) [2024-12-02 10:35:36,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:36,936 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2024-12-02 10:35:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:35:36,937 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 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) Word has length 22 [2024-12-02 10:35:36,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:36,937 INFO L225 Difference]: With dead ends: 72 [2024-12-02 10:35:36,937 INFO L226 Difference]: Without dead ends: 72 [2024-12-02 10:35:36,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:35:36,938 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 32 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:36,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 117 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:35:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-12-02 10:35:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2024-12-02 10:35:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 65 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) [2024-12-02 10:35:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2024-12-02 10:35:36,942 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 22 [2024-12-02 10:35:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:36,942 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2024-12-02 10:35:36,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 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) [2024-12-02 10:35:36,943 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2024-12-02 10:35:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-02 10:35:36,943 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:36,943 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2024-12-02 10:35:36,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 10:35:37,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 10:35:37,144 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:37,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:37,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1311373586, now seen corresponding path program 2 times [2024-12-02 10:35:37,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:37,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323780302] [2024-12-02 10:35:37,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:35:37,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:37,157 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:35:37,157 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:35:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:37,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:37,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323780302] [2024-12-02 10:35:37,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323780302] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:37,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081982635] [2024-12-02 10:35:37,410 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:35:37,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:37,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:37,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:37,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:35:37,462 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:35:37,462 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:35:37,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 10:35:37,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:37,478 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 [2024-12-02 10:35:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:37,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:35:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:38,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081982635] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:35:38,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:35:38,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-12-02 10:35:38,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695178760] [2024-12-02 10:35:38,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:35:38,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 10:35:38,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:38,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 10:35:38,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2024-12-02 10:35:38,190 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:38,434 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2024-12-02 10:35:38,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 10:35:38,435 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-12-02 10:35:38,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:38,435 INFO L225 Difference]: With dead ends: 64 [2024-12-02 10:35:38,435 INFO L226 Difference]: Without dead ends: 64 [2024-12-02 10:35:38,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=296, Invalid=634, Unknown=0, NotChecked=0, Total=930 [2024-12-02 10:35:38,437 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 57 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:38,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 65 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:35:38,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-12-02 10:35:38,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 39. [2024-12-02 10:35:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-12-02 10:35:38,440 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 23 [2024-12-02 10:35:38,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:38,440 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-12-02 10:35:38,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-12-02 10:35:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 10:35:38,441 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:38,441 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:38,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:35:38,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 10:35:38,641 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:38,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1997807980, now seen corresponding path program 2 times [2024-12-02 10:35:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:38,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945268246] [2024-12-02 10:35:38,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:35:38,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:38,651 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:35:38,651 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:35:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 10:35:38,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:38,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945268246] [2024-12-02 10:35:38,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945268246] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:35:38,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:35:38,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:35:38,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071825433] [2024-12-02 10:35:38,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:35:38,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:35:38,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:38,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:35:38,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:35:38,682 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:38,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:38,694 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2024-12-02 10:35:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:35:38,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-12-02 10:35:38,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:38,695 INFO L225 Difference]: With dead ends: 37 [2024-12-02 10:35:38,695 INFO L226 Difference]: Without dead ends: 37 [2024-12-02 10:35:38,695 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 [2024-12-02 10:35:38,696 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:38,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:35:38,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-12-02 10:35:38,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-12-02 10:35:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 36 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) [2024-12-02 10:35:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-12-02 10:35:38,698 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 24 [2024-12-02 10:35:38,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:38,698 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-12-02 10:35:38,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-12-02 10:35:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 10:35:38,699 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:38,699 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:38,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 10:35:38,699 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:38,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1997807979, now seen corresponding path program 1 times [2024-12-02 10:35:38,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:38,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371931895] [2024-12-02 10:35:38,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:38,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:38,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:38,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371931895] [2024-12-02 10:35:38,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371931895] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:38,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878828407] [2024-12-02 10:35:38,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:38,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:38,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:38,813 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:38,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:35:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:38,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 10:35:38,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:38,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:35:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:39,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878828407] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:35:39,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:35:39,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-12-02 10:35:39,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941139303] [2024-12-02 10:35:39,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:35:39,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:35:39,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:39,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:35:39,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:35:39,071 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:39,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:39,139 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2024-12-02 10:35:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:35:39,140 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-12-02 10:35:39,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:39,140 INFO L225 Difference]: With dead ends: 61 [2024-12-02 10:35:39,140 INFO L226 Difference]: Without dead ends: 61 [2024-12-02 10:35:39,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:35:39,141 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:39,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 72 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:35:39,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-12-02 10:35:39,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-12-02 10:35:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 58 states have (on average 1.103448275862069) internal successors, (64), 60 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2024-12-02 10:35:39,144 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 24 [2024-12-02 10:35:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:39,145 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2024-12-02 10:35:39,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:39,145 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2024-12-02 10:35:39,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 10:35:39,146 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:39,146 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:39,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 10:35:39,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 10:35:39,346 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:39,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1601653307, now seen corresponding path program 2 times [2024-12-02 10:35:39,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:39,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805275981] [2024-12-02 10:35:39,347 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:35:39,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:39,360 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:35:39,360 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:35:39,425 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-12-02 10:35:39,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:39,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805275981] [2024-12-02 10:35:39,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805275981] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:35:39,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:35:39,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:35:39,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989394824] [2024-12-02 10:35:39,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:35:39,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:35:39,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:39,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:35:39,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:35:39,426 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:39,448 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2024-12-02 10:35:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:35:39,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 48 [2024-12-02 10:35:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:39,449 INFO L225 Difference]: With dead ends: 107 [2024-12-02 10:35:39,449 INFO L226 Difference]: Without dead ends: 107 [2024-12-02 10:35:39,450 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 [2024-12-02 10:35:39,450 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:39,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 30 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:35:39,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-12-02 10:35:39,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2024-12-02 10:35:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 105 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) [2024-12-02 10:35:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2024-12-02 10:35:39,454 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 48 [2024-12-02 10:35:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:39,454 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2024-12-02 10:35:39,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2024-12-02 10:35:39,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 10:35:39,455 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:39,455 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:39,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 10:35:39,456 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:39,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:39,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1603273401, now seen corresponding path program 1 times [2024-12-02 10:35:39,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:39,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816952905] [2024-12-02 10:35:39,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:39,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:39,605 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-12-02 10:35:39,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:39,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816952905] [2024-12-02 10:35:39,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816952905] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:39,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760827776] [2024-12-02 10:35:39,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:39,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:39,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:39,607 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:39,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:35:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:39,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 10:35:39,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:39,906 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:39,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:35:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:40,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760827776] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:35:40,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:35:40,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 27 [2024-12-02 10:35:40,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479598639] [2024-12-02 10:35:40,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:35:40,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 10:35:40,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:40,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 10:35:40,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=418, Unknown=0, NotChecked=0, Total=702 [2024-12-02 10:35:40,172 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand has 27 states, 27 states have (on average 4.111111111111111) internal successors, (111), 27 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:41,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:41,118 INFO L93 Difference]: Finished difference Result 206 states and 211 transitions. [2024-12-02 10:35:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 10:35:41,118 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.111111111111111) internal successors, (111), 27 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2024-12-02 10:35:41,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:41,118 INFO L225 Difference]: With dead ends: 206 [2024-12-02 10:35:41,119 INFO L226 Difference]: Without dead ends: 206 [2024-12-02 10:35:41,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1681, Invalid=3289, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 10:35:41,121 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 210 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:41,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 76 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:35:41,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-12-02 10:35:41,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2024-12-02 10:35:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 200 states have (on average 1.035) internal successors, (207), 202 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 207 transitions. [2024-12-02 10:35:41,127 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 207 transitions. Word has length 53 [2024-12-02 10:35:41,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:41,127 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 207 transitions. [2024-12-02 10:35:41,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.111111111111111) internal successors, (111), 27 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 207 transitions. [2024-12-02 10:35:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 10:35:41,129 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:41,129 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:41,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 10:35:41,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 10:35:41,330 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:41,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:41,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1439385477, now seen corresponding path program 1 times [2024-12-02 10:35:41,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:41,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456418807] [2024-12-02 10:35:41,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:41,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 1 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:42,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:42,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456418807] [2024-12-02 10:35:42,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456418807] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:42,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507638196] [2024-12-02 10:35:42,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:42,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:42,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:42,108 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:42,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:35:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:42,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 10:35:42,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 1 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:42,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:35:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 1 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:43,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507638196] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:35:43,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:35:43,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 71 [2024-12-02 10:35:43,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155128174] [2024-12-02 10:35:43,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:35:43,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-12-02 10:35:43,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:43,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-12-02 10:35:43,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2050, Invalid=2920, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 10:35:43,997 INFO L87 Difference]: Start difference. First operand 203 states and 207 transitions. Second operand has 71 states, 71 states have (on average 4.0) internal successors, (284), 71 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:44,198 INFO L93 Difference]: Finished difference Result 283 states and 287 transitions. [2024-12-02 10:35:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-12-02 10:35:44,198 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.0) internal successors, (284), 71 states have internal predecessors, (284), 0 states have call successors, (0), 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 [2024-12-02 10:35:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:44,200 INFO L225 Difference]: With dead ends: 283 [2024-12-02 10:35:44,200 INFO L226 Difference]: Without dead ends: 283 [2024-12-02 10:35:44,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2050, Invalid=2920, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 10:35:44,201 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:44,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 157 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:35:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-12-02 10:35:44,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-12-02 10:35:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 280 states have (on average 1.025) internal successors, (287), 282 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:44,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 287 transitions. [2024-12-02 10:35:44,208 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 287 transitions. Word has length 104 [2024-12-02 10:35:44,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:44,209 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 287 transitions. [2024-12-02 10:35:44,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.0) internal successors, (284), 71 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:44,209 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 287 transitions. [2024-12-02 10:35:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 10:35:44,211 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:44,211 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:44,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 10:35:44,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 10:35:44,412 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:44,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:44,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1438164533, now seen corresponding path program 2 times [2024-12-02 10:35:44,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:44,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514753127] [2024-12-02 10:35:44,412 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:35:44,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:44,428 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:35:44,428 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:35:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2017 trivial. 0 not checked. [2024-12-02 10:35:44,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:44,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514753127] [2024-12-02 10:35:44,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514753127] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:35:44,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:35:44,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:35:44,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124713100] [2024-12-02 10:35:44,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:35:44,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:35:44,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:44,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:35:44,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:35:44,485 INFO L87 Difference]: Start difference. First operand 283 states and 287 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:44,504 INFO L93 Difference]: Finished difference Result 282 states and 286 transitions. [2024-12-02 10:35:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:35:44,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2024-12-02 10:35:44,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:44,506 INFO L225 Difference]: With dead ends: 282 [2024-12-02 10:35:44,506 INFO L226 Difference]: Without dead ends: 279 [2024-12-02 10:35:44,506 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 [2024-12-02 10:35:44,507 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:44,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:35:44,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-12-02 10:35:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2024-12-02 10:35:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 277 states have (on average 1.0180505415162455) internal successors, (282), 278 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) [2024-12-02 10:35:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 282 transitions. [2024-12-02 10:35:44,513 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 282 transitions. Word has length 144 [2024-12-02 10:35:44,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:44,514 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 282 transitions. [2024-12-02 10:35:44,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:44,514 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 282 transitions. [2024-12-02 10:35:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 10:35:44,515 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:44,516 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:44,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 10:35:44,516 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:44,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:44,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1438161043, now seen corresponding path program 1 times [2024-12-02 10:35:44,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:44,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716344283] [2024-12-02 10:35:44,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:44,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2019 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2018 trivial. 0 not checked. [2024-12-02 10:35:44,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:44,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716344283] [2024-12-02 10:35:44,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716344283] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:44,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035234121] [2024-12-02 10:35:44,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:44,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:44,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:44,707 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:44,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:35:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:44,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 10:35:44,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2019 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 1832 trivial. 0 not checked. [2024-12-02 10:35:45,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:35:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2019 backedges. 184 proven. 3 refuted. 0 times theorem prover too weak. 1832 trivial. 0 not checked. [2024-12-02 10:35:45,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035234121] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:35:45,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:35:45,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-12-02 10:35:45,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206082639] [2024-12-02 10:35:45,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:35:45,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 10:35:45,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:45,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 10:35:45,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:35:45,313 INFO L87 Difference]: Start difference. First operand 279 states and 282 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 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) [2024-12-02 10:35:45,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:45,426 INFO L93 Difference]: Finished difference Result 559 states and 568 transitions. [2024-12-02 10:35:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:35:45,426 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 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 144 [2024-12-02 10:35:45,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:45,428 INFO L225 Difference]: With dead ends: 559 [2024-12-02 10:35:45,428 INFO L226 Difference]: Without dead ends: 559 [2024-12-02 10:35:45,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2024-12-02 10:35:45,429 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 85 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:45,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 39 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:35:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-12-02 10:35:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 551. [2024-12-02 10:35:45,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 549 states have (on average 1.0163934426229508) internal successors, (558), 550 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 558 transitions. [2024-12-02 10:35:45,435 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 558 transitions. Word has length 144 [2024-12-02 10:35:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:45,436 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 558 transitions. [2024-12-02 10:35:45,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 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) [2024-12-02 10:35:45,436 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 558 transitions. [2024-12-02 10:35:45,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 10:35:45,438 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:45,438 INFO L218 NwaCegarLoop]: trace histogram [64, 64, 64, 64, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 10:35:45,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 10:35:45,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 10:35:45,638 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:45,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:45,639 INFO L85 PathProgramCache]: Analyzing trace with hash -843496572, now seen corresponding path program 1 times [2024-12-02 10:35:45,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:45,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170846604] [2024-12-02 10:35:45,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:45,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8198 backedges. 0 proven. 4166 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2024-12-02 10:35:46,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:46,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170846604] [2024-12-02 10:35:46,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170846604] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:46,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720763227] [2024-12-02 10:35:46,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:46,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:46,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:46,394 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:46,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 10:35:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:46,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 10:35:46,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:46,621 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 [2024-12-02 10:35:46,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-12-02 10:35:46,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-12-02 10:35:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8198 backedges. 0 proven. 4166 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2024-12-02 10:35:47,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:35:48,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8198 backedges. 0 proven. 4166 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2024-12-02 10:35:48,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720763227] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:35:48,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:35:48,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2024-12-02 10:35:48,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118156214] [2024-12-02 10:35:48,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:35:48,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:35:48,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:48,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:35:48,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:35:48,595 INFO L87 Difference]: Start difference. First operand 551 states and 558 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:48,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:48,651 INFO L93 Difference]: Finished difference Result 684 states and 690 transitions. [2024-12-02 10:35:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:35:48,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2024-12-02 10:35:48,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:48,654 INFO L225 Difference]: With dead ends: 684 [2024-12-02 10:35:48,654 INFO L226 Difference]: Without dead ends: 684 [2024-12-02 10:35:48,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:35:48,654 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:48,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:35:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-12-02 10:35:48,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2024-12-02 10:35:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 682 states have (on average 1.0117302052785924) internal successors, (690), 683 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 690 transitions. [2024-12-02 10:35:48,668 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 690 transitions. Word has length 271 [2024-12-02 10:35:48,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:48,669 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 690 transitions. [2024-12-02 10:35:48,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:48,669 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 690 transitions. [2024-12-02 10:35:48,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-12-02 10:35:48,680 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:48,680 INFO L218 NwaCegarLoop]: trace histogram [128, 128, 128, 128, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:35:48,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 10:35:48,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:48,880 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:48,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:48,881 INFO L85 PathProgramCache]: Analyzing trace with hash -735751844, now seen corresponding path program 2 times [2024-12-02 10:35:48,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:48,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958568187] [2024-12-02 10:35:48,881 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:35:48,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:49,059 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:35:49,060 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:35:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 33072 backedges. 0 proven. 25006 refuted. 0 times theorem prover too weak. 8066 trivial. 0 not checked. [2024-12-02 10:35:49,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:49,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958568187] [2024-12-02 10:35:49,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958568187] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:49,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113949577] [2024-12-02 10:35:49,937 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:35:49,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:49,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:49,939 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:49,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 10:35:50,322 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:35:50,323 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:35:50,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 10:35:50,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 33072 backedges. 4166 proven. 16671 refuted. 0 times theorem prover too weak. 12235 trivial. 0 not checked. [2024-12-02 10:35:51,699 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:35:52,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-12-02 10:35:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 33072 backedges. 4166 proven. 16671 refuted. 0 times theorem prover too weak. 12235 trivial. 0 not checked. [2024-12-02 10:35:53,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113949577] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:35:53,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:35:53,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-12-02 10:35:53,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852184760] [2024-12-02 10:35:53,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:35:53,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:35:53,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:35:53,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:35:53,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:35:53,091 INFO L87 Difference]: Start difference. First operand 684 states and 690 transitions. Second operand has 17 states, 17 states have (on average 7.764705882352941) internal successors, (132), 17 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) [2024-12-02 10:35:53,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:53,304 INFO L93 Difference]: Finished difference Result 833 states and 844 transitions. [2024-12-02 10:35:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 10:35:53,304 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.764705882352941) internal successors, (132), 17 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 549 [2024-12-02 10:35:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:53,307 INFO L225 Difference]: With dead ends: 833 [2024-12-02 10:35:53,307 INFO L226 Difference]: Without dead ends: 833 [2024-12-02 10:35:53,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1088 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2024-12-02 10:35:53,308 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 126 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:53,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 172 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:35:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2024-12-02 10:35:53,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 689. [2024-12-02 10:35:53,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 687 states have (on average 1.0116448326055314) internal successors, (695), 688 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 695 transitions. [2024-12-02 10:35:53,319 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 695 transitions. Word has length 549 [2024-12-02 10:35:53,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:53,320 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 695 transitions. [2024-12-02 10:35:53,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.764705882352941) internal successors, (132), 17 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) [2024-12-02 10:35:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 695 transitions. [2024-12-02 10:35:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2024-12-02 10:35:53,329 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:53,329 INFO L218 NwaCegarLoop]: trace histogram [160, 160, 160, 160, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2024-12-02 10:35:53,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 10:35:53,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:53,530 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:35:53,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:53,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1616564149, now seen corresponding path program 2 times [2024-12-02 10:35:53,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:53,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222048417] [2024-12-02 10:35:53,530 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:35:53,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:53,752 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:35:53,753 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:35:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 51746 backedges. 0 proven. 41666 refuted. 0 times theorem prover too weak. 10080 trivial. 0 not checked. [2024-12-02 10:35:55,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:55,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222048417] [2024-12-02 10:35:55,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222048417] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:55,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119657805] [2024-12-02 10:35:55,519 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:35:55,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:55,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:55,521 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:55,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 10:35:55,929 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:35:55,929 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:35:55,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 10:35:55,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:55,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-12-02 10:35:55,956 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 [2024-12-02 10:35:55,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-12-02 10:35:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 51746 backedges. 0 proven. 41666 refuted. 0 times theorem prover too weak. 10080 trivial. 0 not checked. [2024-12-02 10:35:58,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:36:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 51746 backedges. 0 proven. 41666 refuted. 0 times theorem prover too weak. 10080 trivial. 0 not checked. [2024-12-02 10:36:00,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119657805] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:36:00,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:36:00,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 16 [2024-12-02 10:36:00,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387793137] [2024-12-02 10:36:00,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:36:00,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:36:00,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:36:00,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:36:00,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:36:00,679 INFO L87 Difference]: Start difference. First operand 689 states and 695 transitions. Second operand has 17 states, 16 states have (on average 9.875) internal successors, (158), 17 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:36:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:36:00,850 INFO L93 Difference]: Finished difference Result 1497 states and 1514 transitions. [2024-12-02 10:36:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:36:00,850 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 9.875) internal successors, (158), 17 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 676 [2024-12-02 10:36:00,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:36:00,855 INFO L225 Difference]: With dead ends: 1497 [2024-12-02 10:36:00,855 INFO L226 Difference]: Without dead ends: 1497 [2024-12-02 10:36:00,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1360 GetRequests, 1341 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=266, Unknown=0, NotChecked=0, Total=420 [2024-12-02 10:36:00,856 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:36:00,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 268 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:36:00,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2024-12-02 10:36:00,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1497. [2024-12-02 10:36:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1495 states have (on average 1.0127090301003345) internal successors, (1514), 1496 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:36:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1514 transitions. [2024-12-02 10:36:00,882 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1514 transitions. Word has length 676 [2024-12-02 10:36:00,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:36:00,883 INFO L471 AbstractCegarLoop]: Abstraction has 1497 states and 1514 transitions. [2024-12-02 10:36:00,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 9.875) internal successors, (158), 17 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:36:00,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1514 transitions. [2024-12-02 10:36:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2024-12-02 10:36:00,888 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:36:00,888 INFO L218 NwaCegarLoop]: trace histogram [160, 160, 160, 160, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 10:36:00,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 10:36:01,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:36:01,089 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-12-02 10:36:01,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:36:01,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1652772457, now seen corresponding path program 3 times [2024-12-02 10:36:01,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:36:01,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503935965] [2024-12-02 10:36:01,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 10:36:01,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:36:01,140 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 10:36:01,140 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:36:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 51762 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 51757 trivial. 0 not checked. [2024-12-02 10:36:01,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:36:01,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503935965] [2024-12-02 10:36:01,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503935965] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:36:01,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:36:01,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:36:01,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371999141] [2024-12-02 10:36:01,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:36:01,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:36:01,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:36:01,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:36:01,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:36:01,221 INFO L87 Difference]: Start difference. First operand 1497 states and 1514 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:36:01,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:36:01,270 INFO L93 Difference]: Finished difference Result 1495 states and 1512 transitions. [2024-12-02 10:36:01,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:36:01,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 687 [2024-12-02 10:36:01,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:36:01,275 INFO L225 Difference]: With dead ends: 1495 [2024-12-02 10:36:01,275 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 10:36:01,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:36:01,277 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:36:01,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 32 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:36:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 10:36:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 10:36:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:36:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 10:36:01,278 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 687 [2024-12-02 10:36:01,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:36:01,278 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 10:36:01,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:36:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 10:36:01,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 10:36:01,281 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (7 of 8 remaining) [2024-12-02 10:36:01,281 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2024-12-02 10:36:01,281 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2024-12-02 10:36:01,281 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2024-12-02 10:36:01,281 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2024-12-02 10:36:01,282 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-12-02 10:36:01,282 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2024-12-02 10:36:01,282 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-12-02 10:36:01,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 10:36:01,285 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:36:01,287 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 10:36:01,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 10:36:01 BoogieIcfgContainer [2024-12-02 10:36:01,290 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 10:36:01,291 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 10:36:01,291 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 10:36:01,291 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 10:36:01,302 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:35:33" (3/4) ... [2024-12-02 10:36:01,303 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 10:36:01,309 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-12-02 10:36:01,310 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-12-02 10:36:01,310 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-12-02 10:36:01,310 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 10:36:01,362 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 10:36:01,362 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 10:36:01,362 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 10:36:01,362 INFO L158 Benchmark]: Toolchain (without parser) took 28098.15ms. Allocated memory was 117.4MB in the beginning and 478.2MB in the end (delta: 360.7MB). Free memory was 93.3MB in the beginning and 411.3MB in the end (delta: -317.9MB). Peak memory consumption was 315.1MB. Max. memory is 16.1GB. [2024-12-02 10:36:01,363 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:36:01,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 148.18ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 83.0MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 10:36:01,363 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.48ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 81.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:36:01,363 INFO L158 Benchmark]: Boogie Preprocessor took 30.36ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:36:01,363 INFO L158 Benchmark]: RCFGBuilder took 253.46ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 68.5MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 10:36:01,364 INFO L158 Benchmark]: TraceAbstraction took 27568.19ms. Allocated memory was 117.4MB in the beginning and 478.2MB in the end (delta: 360.7MB). Free memory was 68.0MB in the beginning and 142.7MB in the end (delta: -74.7MB). Peak memory consumption was 289.9MB. Max. memory is 16.1GB. [2024-12-02 10:36:01,364 INFO L158 Benchmark]: Witness Printer took 71.08ms. Allocated memory is still 478.2MB. Free memory was 142.7MB in the beginning and 411.3MB in the end (delta: -268.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 10:36:01,365 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 148.18ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 83.0MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.48ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 81.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.36ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 253.46ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 68.5MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 27568.19ms. Allocated memory was 117.4MB in the beginning and 478.2MB in the end (delta: 360.7MB). Free memory was 68.0MB in the beginning and 142.7MB in the end (delta: -74.7MB). Peak memory consumption was 289.9MB. Max. memory is 16.1GB. * Witness Printer took 71.08ms. Allocated memory is still 478.2MB. Free memory was 142.7MB in the beginning and 411.3MB in the end (delta: -268.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 27.5s, OverallIterations: 22, TraceHistogramMax: 160, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 800 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 800 mSDsluCounter, 1510 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1044 mSDsCounter, 83 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1725 IncrementalHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 83 mSolverCounterUnsat, 466 mSDtfsCounter, 1725 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3967 GetRequests, 3667 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1497occurred in iteration=21, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 221 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 4741 NumberOfCodeBlocks, 3879 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 6594 ConstructedInterpolants, 0 QuantifiedInterpolants, 71904 SizeOfPredicates, 19 NumberOfNonLiveVariables, 6565 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 46 InterpolantComputations, 10 PerfectInterpolantSequences, 143326/342822 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 10:36:01,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39e95d9-e071-4b0a-9eea-f9367ad9e0e2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE