./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c51b17720ce1dad8733576d816f307564aabdff8c7a86cf8d9848ed8571cafd2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:23:26,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:23:26,326 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:23:26,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:23:26,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:23:26,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:23:26,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:23:26,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:23:26,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:23:26,370 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:23:26,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:23:26,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:23:26,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:23:26,372 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:23:26,372 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:23:26,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:23:26,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:23:26,373 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:23:26,373 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:23:26,373 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:23:26,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:23:26,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:23:26,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:23:26,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:23:26,375 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:23:26,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:23:26,375 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:23:26,375 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:23:26,375 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:23:26,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:23:26,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:23:26,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:23:26,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:23:26,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:23:26,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:23:26,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:23:26,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:23:26,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:23:26,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:23:26,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:23:26,378 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:23:26,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:23:26,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:23:26,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:23:26,378 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:23:26,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:23:26,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:23:26,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:23:26,379 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_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) 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 -> c51b17720ce1dad8733576d816f307564aabdff8c7a86cf8d9848ed8571cafd2 [2024-11-27 20:23:26,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:23:26,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:23:26,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:23:26,709 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:23:26,710 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:23:26,712 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c [2024-11-27 20:23:30,022 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/data/50fe07ceb/25b0aeecdae342b69ea48da37d44e636/FLAGd7ed473c5 [2024-11-27 20:23:30,364 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:23:30,365 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c [2024-11-27 20:23:30,377 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/data/50fe07ceb/25b0aeecdae342b69ea48da37d44e636/FLAGd7ed473c5 [2024-11-27 20:23:30,410 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/data/50fe07ceb/25b0aeecdae342b69ea48da37d44e636 [2024-11-27 20:23:30,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:23:30,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:23:30,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:23:30,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:23:30,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:23:30,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f842b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30, skipping insertion in model container [2024-11-27 20:23:30,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,448 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:23:30,655 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c[414,427] [2024-11-27 20:23:30,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:23:30,688 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:23:30,700 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c[414,427] [2024-11-27 20:23:30,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:23:30,726 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:23:30,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30 WrapperNode [2024-11-27 20:23:30,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:23:30,728 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:23:30,728 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:23:30,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:23:30,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,770 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2024-11-27 20:23:30,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:23:30,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:23:30,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:23:30,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:23:30,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,789 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,806 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-27 20:23:30,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,818 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,819 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,827 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:23:30,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:23:30,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:23:30,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:23:30,838 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (1/1) ... [2024-11-27 20:23:30,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:23:30,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:30,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:23:30,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:23:30,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:23:30,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:23:30,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:23:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:23:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:23:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:23:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:23:30,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:23:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:23:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:23:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:23:31,005 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:23:31,008 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:23:31,192 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-27 20:23:31,194 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:23:31,207 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:23:31,208 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:23:31,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:23:31 BoogieIcfgContainer [2024-11-27 20:23:31,208 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:23:31,211 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:23:31,212 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:23:31,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:23:31,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:23:30" (1/3) ... [2024-11-27 20:23:31,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e28f231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:23:31, skipping insertion in model container [2024-11-27 20:23:31,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:30" (2/3) ... [2024-11-27 20:23:31,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e28f231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:23:31, skipping insertion in model container [2024-11-27 20:23:31,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:23:31" (3/3) ... [2024-11-27 20:23:31,222 INFO L128 eAbstractionObserver]: Analyzing ICFG array_init_var_plus_ind.c [2024-11-27 20:23:31,243 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:23:31,245 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_init_var_plus_ind.c that has 1 procedures, 16 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-27 20:23:31,331 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:23:31,349 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=LoopHeads, 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;@6ad46038, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:23:31,350 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:23:31,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-27 20:23:31,363 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:31,363 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:31,364 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:31,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash 531735947, now seen corresponding path program 1 times [2024-11-27 20:23:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:31,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660961902] [2024-11-27 20:23:31,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:31,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:31,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:31,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660961902] [2024-11-27 20:23:31,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660961902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:31,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:31,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:23:31,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985115552] [2024-11-27 20:23:31,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:31,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:23:31,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:31,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:23:31,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:23:31,624 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:31,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:31,639 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2024-11-27 20:23:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:23:31,642 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-27 20:23:31,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:31,650 INFO L225 Difference]: With dead ends: 27 [2024-11-27 20:23:31,651 INFO L226 Difference]: Without dead ends: 12 [2024-11-27 20:23:31,657 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 [2024-11-27 20:23:31,661 INFO L435 NwaCegarLoop]: 18 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, 18 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 [2024-11-27 20:23:31,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:23:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-27 20:23:31,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-27 20:23:31,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:31,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-27 20:23:31,701 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2024-11-27 20:23:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:31,701 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-27 20:23:31,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:31,702 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-27 20:23:31,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-27 20:23:31,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:31,702 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:31,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:23:31,703 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:31,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:31,704 INFO L85 PathProgramCache]: Analyzing trace with hash 274073588, now seen corresponding path program 1 times [2024-11-27 20:23:31,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:31,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869909238] [2024-11-27 20:23:31,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:31,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869909238] [2024-11-27 20:23:31,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869909238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:31,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:23:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78753260] [2024-11-27 20:23:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:31,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:23:31,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:31,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:23:31,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:23:31,874 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:31,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:31,929 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-11-27 20:23:31,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:23:31,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-27 20:23:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:31,931 INFO L225 Difference]: With dead ends: 29 [2024-11-27 20:23:31,932 INFO L226 Difference]: Without dead ends: 22 [2024-11-27 20:23:31,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:23:31,933 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:31,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 17 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:23:31,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-27 20:23:31,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 13. [2024-11-27 20:23:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-11-27 20:23:31,946 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2024-11-27 20:23:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:31,947 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-27 20:23:31,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-11-27 20:23:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 20:23:31,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:31,947 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:31,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:23:31,948 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:31,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:31,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1844503469, now seen corresponding path program 1 times [2024-11-27 20:23:31,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:31,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477709306] [2024-11-27 20:23:31,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:31,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:32,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:32,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477709306] [2024-11-27 20:23:32,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477709306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:32,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:32,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:23:32,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591564254] [2024-11-27 20:23:32,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:32,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:23:32,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:32,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:23:32,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:23:32,084 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:32,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:32,118 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-11-27 20:23:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:23:32,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-27 20:23:32,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:32,120 INFO L225 Difference]: With dead ends: 23 [2024-11-27 20:23:32,120 INFO L226 Difference]: Without dead ends: 15 [2024-11-27 20:23:32,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:23:32,121 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:32,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:23:32,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-27 20:23:32,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-27 20:23:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-27 20:23:32,127 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2024-11-27 20:23:32,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:32,127 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-27 20:23:32,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:32,129 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-27 20:23:32,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 20:23:32,130 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:32,130 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:32,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:23:32,132 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:32,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:32,133 INFO L85 PathProgramCache]: Analyzing trace with hash 109390811, now seen corresponding path program 1 times [2024-11-27 20:23:32,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:32,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740887105] [2024-11-27 20:23:32,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:32,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:32,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:32,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740887105] [2024-11-27 20:23:32,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740887105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:32,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254461703] [2024-11-27 20:23:32,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:32,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:32,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:32,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:32,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:23:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:32,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:23:32,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:32,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:32,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254461703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:32,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:32,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-11-27 20:23:32,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088629440] [2024-11-27 20:23:32,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:32,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:23:32,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:32,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:23:32,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:23:32,750 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:32,916 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2024-11-27 20:23:32,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:23:32,917 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 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 [2024-11-27 20:23:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:32,918 INFO L225 Difference]: With dead ends: 45 [2024-11-27 20:23:32,918 INFO L226 Difference]: Without dead ends: 36 [2024-11-27 20:23:32,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:23:32,920 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 68 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:32,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 63 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:23:32,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-27 20:23:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22. [2024-11-27 20:23:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-27 20:23:32,927 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2024-11-27 20:23:32,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:32,927 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-27 20:23:32,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:32,927 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-27 20:23:32,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-27 20:23:32,928 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:32,928 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:32,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:23:33,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:33,132 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:33,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:33,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1945954573, now seen corresponding path program 1 times [2024-11-27 20:23:33,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:33,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581943333] [2024-11-27 20:23:33,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:33,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:33,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:33,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581943333] [2024-11-27 20:23:33,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581943333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:33,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896665590] [2024-11-27 20:23:33,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:33,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:33,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:33,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:33,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:23:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:33,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 20:23:33,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:33,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:23:34,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:23:34,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:34,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:34,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-27 20:23:34,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-27 20:23:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:34,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896665590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:34,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:34,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-27 20:23:34,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648029615] [2024-11-27 20:23:34,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:34,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:23:34,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:34,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:23:34,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:23:34,332 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:34,486 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2024-11-27 20:23:34,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:23:34,486 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-27 20:23:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:34,487 INFO L225 Difference]: With dead ends: 35 [2024-11-27 20:23:34,487 INFO L226 Difference]: Without dead ends: 33 [2024-11-27 20:23:34,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:23:34,488 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:34,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 84 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:23:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-27 20:23:34,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2024-11-27 20:23:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-27 20:23:34,501 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2024-11-27 20:23:34,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:34,502 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-27 20:23:34,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-27 20:23:34,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-27 20:23:34,507 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:34,507 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:34,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:23:34,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:34,711 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:34,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:34,712 INFO L85 PathProgramCache]: Analyzing trace with hash 136274906, now seen corresponding path program 2 times [2024-11-27 20:23:34,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:34,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188443717] [2024-11-27 20:23:34,712 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:34,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:34,744 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:23:34,744 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:35,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:35,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188443717] [2024-11-27 20:23:35,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188443717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:35,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314739734] [2024-11-27 20:23:35,136 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:35,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:35,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:35,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:35,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:23:35,227 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:23:35,227 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:35,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 20:23:35,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:35,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:23:35,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:23:35,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:23:35,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:23:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:35,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:35,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-27 20:23:35,733 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 25 treesize of output 21 [2024-11-27 20:23:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:35,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314739734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:35,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:35,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-27 20:23:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098416667] [2024-11-27 20:23:35,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:35,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:23:35,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:35,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:23:35,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:23:35,835 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:36,008 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-11-27 20:23:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:23:36,009 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-27 20:23:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:36,010 INFO L225 Difference]: With dead ends: 32 [2024-11-27 20:23:36,010 INFO L226 Difference]: Without dead ends: 30 [2024-11-27 20:23:36,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:23:36,012 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:36,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 64 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:23:36,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-27 20:23:36,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2024-11-27 20:23:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-27 20:23:36,024 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 19 [2024-11-27 20:23:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:36,025 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-27 20:23:36,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:36,026 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-27 20:23:36,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 20:23:36,026 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:36,026 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:36,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:23:36,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:36,232 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:36,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:36,233 INFO L85 PathProgramCache]: Analyzing trace with hash 516150457, now seen corresponding path program 1 times [2024-11-27 20:23:36,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:36,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027131574] [2024-11-27 20:23:36,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:36,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:36,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:36,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027131574] [2024-11-27 20:23:36,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027131574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:36,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735406856] [2024-11-27 20:23:36,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:36,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:36,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:36,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:36,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:23:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:36,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:23:36,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:36,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:36,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735406856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:36,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:36,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-27 20:23:36,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623547639] [2024-11-27 20:23:36,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:36,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:23:36,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:36,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:23:36,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:23:36,615 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:36,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:36,678 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2024-11-27 20:23:36,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:23:36,679 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-27 20:23:36,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:36,680 INFO L225 Difference]: With dead ends: 37 [2024-11-27 20:23:36,680 INFO L226 Difference]: Without dead ends: 25 [2024-11-27 20:23:36,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:23:36,681 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:36,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:23:36,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-27 20:23:36,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-27 20:23:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:36,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-27 20:23:36,687 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2024-11-27 20:23:36,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:36,689 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-27 20:23:36,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-27 20:23:36,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 20:23:36,689 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:36,689 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:36,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:23:36,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 20:23:36,890 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:36,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:36,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1754355232, now seen corresponding path program 2 times [2024-11-27 20:23:36,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:36,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282800382] [2024-11-27 20:23:36,891 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:36,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:36,910 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:23:36,911 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:37,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:37,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282800382] [2024-11-27 20:23:37,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282800382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:37,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907196633] [2024-11-27 20:23:37,416 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:37,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:37,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:37,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:37,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:23:37,497 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:23:37,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:37,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:23:37,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:37,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:23:38,056 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:23:38,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:23:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:38,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:38,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:23:38,459 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 26 treesize of output 20 [2024-11-27 20:23:38,759 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:38,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907196633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:38,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:38,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2024-11-27 20:23:38,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994315654] [2024-11-27 20:23:38,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:38,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:23:38,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:38,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:23:38,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:23:38,764 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:39,148 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-11-27 20:23:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:23:39,149 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-27 20:23:39,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:39,150 INFO L225 Difference]: With dead ends: 38 [2024-11-27 20:23:39,151 INFO L226 Difference]: Without dead ends: 27 [2024-11-27 20:23:39,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-27 20:23:39,153 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:39,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 112 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:23:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-27 20:23:39,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-27 20:23:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:39,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-27 20:23:39,166 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 23 [2024-11-27 20:23:39,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:39,166 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-27 20:23:39,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:39,167 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-27 20:23:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-27 20:23:39,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:39,168 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:39,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:23:39,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:39,372 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:39,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:39,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1857844614, now seen corresponding path program 1 times [2024-11-27 20:23:39,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:39,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807479411] [2024-11-27 20:23:39,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:23:39,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:39,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807479411] [2024-11-27 20:23:39,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807479411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:39,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270940401] [2024-11-27 20:23:39,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:39,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:39,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:39,551 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:39,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:23:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:39,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:23:39,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:23:39,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:39,928 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:23:39,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270940401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:39,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:39,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-27 20:23:39,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689720889] [2024-11-27 20:23:39,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:39,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:23:39,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:39,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:23:39,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:23:39,931 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:40,117 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2024-11-27 20:23:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:23:40,117 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-27 20:23:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:40,118 INFO L225 Difference]: With dead ends: 113 [2024-11-27 20:23:40,118 INFO L226 Difference]: Without dead ends: 103 [2024-11-27 20:23:40,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:23:40,120 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 161 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:40,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 83 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:23:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-27 20:23:40,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 43. [2024-11-27 20:23:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2024-11-27 20:23:40,129 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 24 [2024-11-27 20:23:40,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:40,129 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2024-11-27 20:23:40,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2024-11-27 20:23:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-27 20:23:40,130 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:40,131 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:40,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:23:40,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:40,335 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:40,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:40,335 INFO L85 PathProgramCache]: Analyzing trace with hash -361298087, now seen corresponding path program 3 times [2024-11-27 20:23:40,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:40,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310454946] [2024-11-27 20:23:40,336 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:23:40,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:40,370 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 20:23:40,371 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:40,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:40,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310454946] [2024-11-27 20:23:40,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310454946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:40,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281111419] [2024-11-27 20:23:40,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:23:40,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:40,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:40,751 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:40,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:23:40,826 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 20:23:40,827 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:40,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 20:23:40,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:40,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:23:40,940 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 20:23:40,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-27 20:23:41,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-27 20:23:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:41,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:41,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:23:41,161 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 54 treesize of output 50 [2024-11-27 20:23:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:41,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281111419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:41,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:41,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-27 20:23:41,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211347824] [2024-11-27 20:23:41,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:41,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 20:23:41,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:41,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 20:23:41,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:23:41,295 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:41,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:41,510 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2024-11-27 20:23:41,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:23:41,511 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-27 20:23:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:41,513 INFO L225 Difference]: With dead ends: 50 [2024-11-27 20:23:41,513 INFO L226 Difference]: Without dead ends: 48 [2024-11-27 20:23:41,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:23:41,514 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 44 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:41,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 111 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:23:41,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-27 20:23:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2024-11-27 20:23:41,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2024-11-27 20:23:41,524 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 26 [2024-11-27 20:23:41,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:41,524 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2024-11-27 20:23:41,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:41,524 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2024-11-27 20:23:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-27 20:23:41,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:41,525 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:41,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 20:23:41,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:41,725 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:41,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1197285919, now seen corresponding path program 4 times [2024-11-27 20:23:41,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:41,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013506239] [2024-11-27 20:23:41,726 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:23:41,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:41,749 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:23:41,749 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:42,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:42,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013506239] [2024-11-27 20:23:42,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013506239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922484586] [2024-11-27 20:23:42,151 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:23:42,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:42,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:42,153 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:42,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:23:42,228 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:23:42,229 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:42,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-27 20:23:42,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:42,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:23:42,731 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:23:42,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:23:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:42,757 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:43,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:23:43,114 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 26 treesize of output 20 [2024-11-27 20:23:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:43,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922484586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:43,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:43,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-27 20:23:43,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747503896] [2024-11-27 20:23:43,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:43,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-27 20:23:43,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:43,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-27 20:23:43,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2024-11-27 20:23:43,394 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 31 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 31 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:44,217 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2024-11-27 20:23:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:23:44,218 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 31 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-27 20:23:44,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:44,219 INFO L225 Difference]: With dead ends: 62 [2024-11-27 20:23:44,219 INFO L226 Difference]: Without dead ends: 47 [2024-11-27 20:23:44,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=854, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 20:23:44,220 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:44,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 159 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 1 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:23:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-27 20:23:44,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-27 20:23:44,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-11-27 20:23:44,231 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2024-11-27 20:23:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:44,231 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-11-27 20:23:44,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 31 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:44,232 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-11-27 20:23:44,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-27 20:23:44,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:44,233 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:44,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:23:44,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:44,433 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:44,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:44,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1694413114, now seen corresponding path program 5 times [2024-11-27 20:23:44,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:44,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235846746] [2024-11-27 20:23:44,434 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:23:44,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:44,483 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-27 20:23:44,484 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:45,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235846746] [2024-11-27 20:23:45,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235846746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305439006] [2024-11-27 20:23:45,005 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:23:45,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:45,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:45,008 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:45,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:23:45,094 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-27 20:23:45,094 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:45,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 20:23:45,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:45,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:23:45,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:23:45,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:23:45,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:23:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:45,404 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:45,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:23:45,617 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 54 treesize of output 50 [2024-11-27 20:23:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:45,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305439006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:45,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:45,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-11-27 20:23:45,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805919655] [2024-11-27 20:23:45,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:45,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 20:23:45,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:45,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 20:23:45,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-11-27 20:23:45,815 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:46,105 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2024-11-27 20:23:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:23:46,106 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-27 20:23:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:46,107 INFO L225 Difference]: With dead ends: 54 [2024-11-27 20:23:46,107 INFO L226 Difference]: Without dead ends: 52 [2024-11-27 20:23:46,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:23:46,108 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:46,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 155 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:23:46,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-27 20:23:46,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2024-11-27 20:23:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2024-11-27 20:23:46,117 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 33 [2024-11-27 20:23:46,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:46,117 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2024-11-27 20:23:46,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:46,118 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2024-11-27 20:23:46,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 20:23:46,118 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:46,119 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:46,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:23:46,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:46,323 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:46,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:46,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1855198452, now seen corresponding path program 6 times [2024-11-27 20:23:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:46,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949690667] [2024-11-27 20:23:46,324 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:23:46,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:46,347 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-27 20:23:46,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:46,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:46,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949690667] [2024-11-27 20:23:46,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949690667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:46,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016685887] [2024-11-27 20:23:46,851 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:23:46,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:46,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:46,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:46,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:23:46,947 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-27 20:23:46,947 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:46,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 20:23:46,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:47,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:23:47,555 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:23:47,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:23:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:47,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:48,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:23:48,007 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 26 treesize of output 20 [2024-11-27 20:23:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 12 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:48,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016685887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:48,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:48,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-27 20:23:48,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548136327] [2024-11-27 20:23:48,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:48,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-27 20:23:48,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:48,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-27 20:23:48,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 20:23:48,316 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:49,481 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2024-11-27 20:23:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:23:49,482 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-27 20:23:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:49,482 INFO L225 Difference]: With dead ends: 70 [2024-11-27 20:23:49,482 INFO L226 Difference]: Without dead ends: 51 [2024-11-27 20:23:49,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=248, Invalid=1234, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 20:23:49,483 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:49,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 183 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 348 Invalid, 2 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:23:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-27 20:23:49,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-27 20:23:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.12) internal successors, (56), 50 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2024-11-27 20:23:49,491 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 37 [2024-11-27 20:23:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:49,491 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2024-11-27 20:23:49,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:49,492 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2024-11-27 20:23:49,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-27 20:23:49,492 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:49,492 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:49,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:23:49,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:23:49,693 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:49,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:49,694 INFO L85 PathProgramCache]: Analyzing trace with hash 350389381, now seen corresponding path program 7 times [2024-11-27 20:23:49,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:49,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445059393] [2024-11-27 20:23:49,694 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:23:49,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:50,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:50,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445059393] [2024-11-27 20:23:50,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445059393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:50,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292921687] [2024-11-27 20:23:50,167 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:23:50,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:50,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:50,170 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:50,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:23:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:50,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 20:23:50,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:50,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:23:50,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:23:50,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:23:50,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:23:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:50,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:51,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:23:51,054 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 54 treesize of output 50 [2024-11-27 20:23:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:51,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292921687] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:51,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:51,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2024-11-27 20:23:51,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588404839] [2024-11-27 20:23:51,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:51,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-27 20:23:51,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:51,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-27 20:23:51,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 20:23:51,258 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 37 states, 37 states have (on average 3.108108108108108) internal successors, (115), 37 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:51,638 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2024-11-27 20:23:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:23:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.108108108108108) internal successors, (115), 37 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-27 20:23:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:51,639 INFO L225 Difference]: With dead ends: 58 [2024-11-27 20:23:51,639 INFO L226 Difference]: Without dead ends: 56 [2024-11-27 20:23:51,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 20:23:51,640 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 101 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:51,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 217 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:23:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-27 20:23:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2024-11-27 20:23:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 54 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:51,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2024-11-27 20:23:51,650 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 40 [2024-11-27 20:23:51,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:51,650 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2024-11-27 20:23:51,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.108108108108108) internal successors, (115), 37 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2024-11-27 20:23:51,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-27 20:23:51,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:51,651 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:51,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:23:51,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:23:51,852 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:51,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:51,853 INFO L85 PathProgramCache]: Analyzing trace with hash 674113867, now seen corresponding path program 8 times [2024-11-27 20:23:51,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:51,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942194321] [2024-11-27 20:23:51,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:51,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:51,880 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:23:51,880 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:52,506 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:52,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:52,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942194321] [2024-11-27 20:23:52,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942194321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:52,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709826464] [2024-11-27 20:23:52,507 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:52,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:52,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:52,509 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:52,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:23:52,599 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:23:52,599 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:52,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 20:23:52,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:52,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:23:53,349 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:23:53,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:23:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 28 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:53,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:53,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:23:53,995 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 26 treesize of output 20 [2024-11-27 20:23:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 24 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:54,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709826464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:54,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:54,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 42 [2024-11-27 20:23:54,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789483896] [2024-11-27 20:23:54,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:54,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-27 20:23:54,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:54,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-27 20:23:54,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1462, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 20:23:54,414 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:55,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:55,336 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2024-11-27 20:23:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:23:55,337 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 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 44 [2024-11-27 20:23:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:55,337 INFO L225 Difference]: With dead ends: 78 [2024-11-27 20:23:55,337 INFO L226 Difference]: Without dead ends: 55 [2024-11-27 20:23:55,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=315, Invalid=1665, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 20:23:55,339 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:55,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 279 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 546 Invalid, 1 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:23:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-27 20:23:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-27 20:23:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2024-11-27 20:23:55,348 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 44 [2024-11-27 20:23:55,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:55,348 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2024-11-27 20:23:55,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2024-11-27 20:23:55,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-27 20:23:55,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:55,349 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:55,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 20:23:55,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:23:55,553 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:55,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:55,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1590188622, now seen corresponding path program 9 times [2024-11-27 20:23:55,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:55,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750104557] [2024-11-27 20:23:55,554 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:23:55,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:55,595 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 20:23:55,596 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:56,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:56,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750104557] [2024-11-27 20:23:56,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750104557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:56,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921108530] [2024-11-27 20:23:56,177 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:23:56,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:56,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:56,179 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:56,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:23:56,314 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 20:23:56,315 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:56,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-27 20:23:56,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:56,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:23:56,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:23:56,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:23:56,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:23:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:56,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:57,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:23:57,274 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 54 treesize of output 50 [2024-11-27 20:23:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:57,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921108530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:57,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:57,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 45 [2024-11-27 20:23:57,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72265287] [2024-11-27 20:23:57,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:57,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-27 20:23:57,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:57,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-27 20:23:57,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1821, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 20:23:57,558 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 45 states, 45 states have (on average 3.022222222222222) internal successors, (136), 45 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:58,211 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2024-11-27 20:23:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:23:58,211 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.022222222222222) internal successors, (136), 45 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-27 20:23:58,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:58,212 INFO L225 Difference]: With dead ends: 62 [2024-11-27 20:23:58,212 INFO L226 Difference]: Without dead ends: 60 [2024-11-27 20:23:58,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=248, Invalid=2508, Unknown=0, NotChecked=0, Total=2756 [2024-11-27 20:23:58,213 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 35 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:58,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 339 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:23:58,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-27 20:23:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-11-27 20:23:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2024-11-27 20:23:58,224 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 47 [2024-11-27 20:23:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:58,225 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2024-11-27 20:23:58,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.022222222222222) internal successors, (136), 45 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:58,225 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2024-11-27 20:23:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-27 20:23:58,226 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:58,226 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:58,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 20:23:58,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:23:58,426 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:58,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:58,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1434774520, now seen corresponding path program 10 times [2024-11-27 20:23:58,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:58,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129925389] [2024-11-27 20:23:58,427 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:23:58,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:58,451 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:23:58,451 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 40 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:59,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:59,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129925389] [2024-11-27 20:23:59,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129925389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:59,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790360750] [2024-11-27 20:23:59,091 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:23:59,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:59,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:59,094 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:59,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:23:59,217 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:23:59,217 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:59,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-27 20:23:59,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:59,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:24:00,198 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:24:00,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:24:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 41 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:00,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:00,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:24:00,911 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 26 treesize of output 20 [2024-11-27 20:24:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 40 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:01,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790360750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:01,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:01,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 51 [2024-11-27 20:24:01,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851530424] [2024-11-27 20:24:01,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:01,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-27 20:24:01,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:01,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-27 20:24:01,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=2139, Unknown=0, NotChecked=0, Total=2550 [2024-11-27 20:24:01,516 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 51 states, 51 states have (on average 2.9019607843137254) internal successors, (148), 51 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:02,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:02,249 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2024-11-27 20:24:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 20:24:02,249 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.9019607843137254) internal successors, (148), 51 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-27 20:24:02,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:02,251 INFO L225 Difference]: With dead ends: 86 [2024-11-27 20:24:02,252 INFO L226 Difference]: Without dead ends: 59 [2024-11-27 20:24:02,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=549, Invalid=2643, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 20:24:02,253 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:02,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 268 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:24:02,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-27 20:24:02,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-27 20:24:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:02,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2024-11-27 20:24:02,264 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 51 [2024-11-27 20:24:02,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:02,265 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2024-11-27 20:24:02,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.9019607843137254) internal successors, (148), 51 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:02,265 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2024-11-27 20:24:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 20:24:02,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:02,266 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:02,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 20:24:02,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:24:02,467 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:02,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:02,467 INFO L85 PathProgramCache]: Analyzing trace with hash 766574001, now seen corresponding path program 11 times [2024-11-27 20:24:02,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:02,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433361621] [2024-11-27 20:24:02,468 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:24:02,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:02,516 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-27 20:24:02,516 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:03,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:03,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433361621] [2024-11-27 20:24:03,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433361621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:03,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926194817] [2024-11-27 20:24:03,131 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:24:03,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:03,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:03,134 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:03,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 20:24:03,277 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-27 20:24:03,277 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:03,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-27 20:24:03,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:03,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:24:03,420 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 20:24:03,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-27 20:24:03,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-27 20:24:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:03,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:04,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:24:04,066 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 118 treesize of output 110 [2024-11-27 20:24:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:04,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926194817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:04,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:04,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2024-11-27 20:24:04,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85103276] [2024-11-27 20:24:04,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:04,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-27 20:24:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:04,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-27 20:24:04,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1514, Unknown=0, NotChecked=0, Total=1640 [2024-11-27 20:24:04,433 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 41 states, 41 states have (on average 3.2439024390243905) internal successors, (133), 41 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:05,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:05,038 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2024-11-27 20:24:05,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:24:05,039 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.2439024390243905) internal successors, (133), 41 states have internal predecessors, (133), 0 states have call successors, (0), 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 54 [2024-11-27 20:24:05,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:05,039 INFO L225 Difference]: With dead ends: 66 [2024-11-27 20:24:05,040 INFO L226 Difference]: Without dead ends: 64 [2024-11-27 20:24:05,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=199, Invalid=2057, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 20:24:05,041 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:05,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 345 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:24:05,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-27 20:24:05,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-11-27 20:24:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:05,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2024-11-27 20:24:05,050 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 54 [2024-11-27 20:24:05,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:05,050 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2024-11-27 20:24:05,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.2439024390243905) internal successors, (133), 41 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:05,050 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2024-11-27 20:24:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-27 20:24:05,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:05,051 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:05,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:05,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:24:05,255 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:05,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:05,255 INFO L85 PathProgramCache]: Analyzing trace with hash -712758153, now seen corresponding path program 12 times [2024-11-27 20:24:05,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:05,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685350470] [2024-11-27 20:24:05,255 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:24:05,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:05,294 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-27 20:24:05,294 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 40 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:06,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:06,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685350470] [2024-11-27 20:24:06,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685350470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:06,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378842007] [2024-11-27 20:24:06,100 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:24:06,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:06,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:06,102 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:06,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 20:24:06,309 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-27 20:24:06,309 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:06,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-27 20:24:06,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:06,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:24:07,386 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:24:07,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:24:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 66 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:07,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:08,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:24:08,183 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 26 treesize of output 20 [2024-11-27 20:24:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 60 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:08,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378842007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:08,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:08,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 55 [2024-11-27 20:24:08,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260891182] [2024-11-27 20:24:08,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:08,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-27 20:24:08,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:08,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-27 20:24:08,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=2557, Unknown=0, NotChecked=0, Total=2970 [2024-11-27 20:24:08,719 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 55 states, 55 states have (on average 3.0727272727272728) internal successors, (169), 55 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:09,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:09,183 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2024-11-27 20:24:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 20:24:09,184 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.0727272727272728) internal successors, (169), 55 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-27 20:24:09,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:09,184 INFO L225 Difference]: With dead ends: 94 [2024-11-27 20:24:09,184 INFO L226 Difference]: Without dead ends: 63 [2024-11-27 20:24:09,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=480, Invalid=2826, Unknown=0, NotChecked=0, Total=3306 [2024-11-27 20:24:09,186 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:09,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 253 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:24:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-27 20:24:09,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-27 20:24:09,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:09,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-27 20:24:09,196 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 58 [2024-11-27 20:24:09,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:09,196 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-27 20:24:09,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.0727272727272728) internal successors, (169), 55 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:09,196 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-27 20:24:09,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 20:24:09,197 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:09,197 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:09,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 20:24:09,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:09,398 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:09,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1181980514, now seen corresponding path program 13 times [2024-11-27 20:24:09,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:09,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297323861] [2024-11-27 20:24:09,398 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:24:09,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:10,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:10,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297323861] [2024-11-27 20:24:10,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297323861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:10,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554262211] [2024-11-27 20:24:10,112 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:24:10,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:10,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:10,115 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:10,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 20:24:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:10,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-27 20:24:10,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:10,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:24:10,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:24:10,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:24:11,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:24:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:11,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:11,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:24:11,556 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 54 treesize of output 50 [2024-11-27 20:24:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:11,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554262211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:11,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:11,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 55 [2024-11-27 20:24:11,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484046798] [2024-11-27 20:24:11,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:11,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-27 20:24:11,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:11,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-27 20:24:11,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2783, Unknown=0, NotChecked=0, Total=2970 [2024-11-27 20:24:11,998 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 55 states, 55 states have (on average 3.2363636363636363) internal successors, (178), 55 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:12,817 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2024-11-27 20:24:12,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:24:12,818 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.2363636363636363) internal successors, (178), 55 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-27 20:24:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:12,819 INFO L225 Difference]: With dead ends: 70 [2024-11-27 20:24:12,819 INFO L226 Difference]: Without dead ends: 68 [2024-11-27 20:24:12,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=283, Invalid=3749, Unknown=0, NotChecked=0, Total=4032 [2024-11-27 20:24:12,821 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 41 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:12,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 578 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:24:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-27 20:24:12,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-11-27 20:24:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2024-11-27 20:24:12,834 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 61 [2024-11-27 20:24:12,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:12,834 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2024-11-27 20:24:12,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.2363636363636363) internal successors, (178), 55 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:12,834 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2024-11-27 20:24:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 20:24:12,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:12,835 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:12,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 20:24:13,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:13,039 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:13,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash -559523612, now seen corresponding path program 14 times [2024-11-27 20:24:13,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:13,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970969236] [2024-11-27 20:24:13,040 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:13,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:13,064 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:13,064 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 60 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:13,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:13,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970969236] [2024-11-27 20:24:13,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970969236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:13,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462268874] [2024-11-27 20:24:13,901 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:13,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:13,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:13,903 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:13,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 20:24:14,015 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:14,015 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:14,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-27 20:24:14,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:14,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:24:15,079 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:24:15,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:24:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 91 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:15,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:15,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:24:15,847 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 26 treesize of output 20 [2024-11-27 20:24:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 84 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:16,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462268874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:16,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:16,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 60 [2024-11-27 20:24:16,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910172395] [2024-11-27 20:24:16,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:16,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-27 20:24:16,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:16,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-27 20:24:16,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=3043, Unknown=0, NotChecked=0, Total=3540 [2024-11-27 20:24:16,479 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 60 states, 60 states have (on average 3.1333333333333333) internal successors, (188), 60 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:17,061 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2024-11-27 20:24:17,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 20:24:17,062 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.1333333333333333) internal successors, (188), 60 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-27 20:24:17,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:17,062 INFO L225 Difference]: With dead ends: 104 [2024-11-27 20:24:17,062 INFO L226 Difference]: Without dead ends: 69 [2024-11-27 20:24:17,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=570, Invalid=3336, Unknown=0, NotChecked=0, Total=3906 [2024-11-27 20:24:17,064 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:17,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 351 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:24:17,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-27 20:24:17,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-27 20:24:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-11-27 20:24:17,075 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 65 [2024-11-27 20:24:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:17,075 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-11-27 20:24:17,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.1333333333333333) internal successors, (188), 60 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:17,075 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-11-27 20:24:17,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 20:24:17,076 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:17,076 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:17,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:17,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 20:24:17,277 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:17,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1631167746, now seen corresponding path program 2 times [2024-11-27 20:24:17,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:17,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309773800] [2024-11-27 20:24:17,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:17,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:17,296 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:17,296 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-27 20:24:17,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:17,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309773800] [2024-11-27 20:24:17,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309773800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:17,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003805171] [2024-11-27 20:24:17,502 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:17,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:17,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:17,504 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:17,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 20:24:17,625 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:17,625 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:17,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:24:17,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:17,826 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-27 20:24:17,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-27 20:24:18,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003805171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:18,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:18,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-27 20:24:18,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990102872] [2024-11-27 20:24:18,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:18,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-27 20:24:18,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:18,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-27 20:24:18,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 20:24:18,054 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 36 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:18,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:18,412 INFO L93 Difference]: Finished difference Result 545 states and 570 transitions. [2024-11-27 20:24:18,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:24:18,413 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 36 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-27 20:24:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:18,414 INFO L225 Difference]: With dead ends: 545 [2024-11-27 20:24:18,415 INFO L226 Difference]: Without dead ends: 511 [2024-11-27 20:24:18,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 20:24:18,418 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 305 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:18,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 156 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:24:18,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2024-11-27 20:24:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 103. [2024-11-27 20:24:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 102 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2024-11-27 20:24:18,434 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 66 [2024-11-27 20:24:18,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:18,434 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2024-11-27 20:24:18,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 36 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2024-11-27 20:24:18,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 20:24:18,435 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:18,435 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:18,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 20:24:18,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-27 20:24:18,635 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:18,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2070967005, now seen corresponding path program 15 times [2024-11-27 20:24:18,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:18,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022411930] [2024-11-27 20:24:18,636 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:18,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:18,677 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-27 20:24:18,678 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:19,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:19,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022411930] [2024-11-27 20:24:19,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022411930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:19,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690352747] [2024-11-27 20:24:19,429 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:19,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:19,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:19,431 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:19,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 20:24:19,783 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-27 20:24:19,783 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:19,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-27 20:24:19,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:19,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:24:19,929 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 20:24:19,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-27 20:24:20,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-27 20:24:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:20,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:20,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:24:20,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2024-11-27 20:24:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:21,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690352747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:21,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:21,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 51 [2024-11-27 20:24:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185608203] [2024-11-27 20:24:21,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:21,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-27 20:24:21,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:21,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-27 20:24:21,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2392, Unknown=0, NotChecked=0, Total=2550 [2024-11-27 20:24:21,078 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 51 states, 51 states have (on average 3.3137254901960786) internal successors, (169), 51 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:21,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:21,981 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2024-11-27 20:24:21,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 20:24:21,982 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.3137254901960786) internal successors, (169), 51 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-27 20:24:21,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:21,982 INFO L225 Difference]: With dead ends: 110 [2024-11-27 20:24:21,982 INFO L226 Difference]: Without dead ends: 108 [2024-11-27 20:24:21,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=250, Invalid=3290, Unknown=0, NotChecked=0, Total=3540 [2024-11-27 20:24:21,984 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 47 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:21,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 554 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:24:21,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-27 20:24:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2024-11-27 20:24:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 106 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2024-11-27 20:24:22,001 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 68 [2024-11-27 20:24:22,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:22,001 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2024-11-27 20:24:22,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.3137254901960786) internal successors, (169), 51 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:22,001 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2024-11-27 20:24:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 20:24:22,002 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:22,002 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:22,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:22,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-27 20:24:22,202 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:22,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:22,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1628623965, now seen corresponding path program 16 times [2024-11-27 20:24:22,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:22,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259265073] [2024-11-27 20:24:22,203 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:24:22,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:22,234 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:24:22,234 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 112 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:23,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:23,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259265073] [2024-11-27 20:24:23,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259265073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:23,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301130661] [2024-11-27 20:24:23,164 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:24:23,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:23,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:23,166 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:23,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 20:24:23,545 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:24:23,545 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:23,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-27 20:24:23,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:23,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:24:24,814 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:24:24,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:24:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 120 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:24,855 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:25,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:24:25,822 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 26 treesize of output 20 [2024-11-27 20:24:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 112 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:26,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301130661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:26,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:26,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 67 [2024-11-27 20:24:26,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436072388] [2024-11-27 20:24:26,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:26,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-27 20:24:26,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:26,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-27 20:24:26,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=3720, Unknown=0, NotChecked=0, Total=4422 [2024-11-27 20:24:26,546 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 67 states, 67 states have (on average 3.1492537313432836) internal successors, (211), 67 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:27,123 INFO L93 Difference]: Finished difference Result 146 states and 159 transitions. [2024-11-27 20:24:27,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 20:24:27,124 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.1492537313432836) internal successors, (211), 67 states have internal predecessors, (211), 0 states have call successors, (0), 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 72 [2024-11-27 20:24:27,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:27,124 INFO L225 Difference]: With dead ends: 146 [2024-11-27 20:24:27,124 INFO L226 Difference]: Without dead ends: 107 [2024-11-27 20:24:27,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=775, Invalid=3917, Unknown=0, NotChecked=0, Total=4692 [2024-11-27 20:24:27,126 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:27,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 348 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:24:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-27 20:24:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-27 20:24:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1226415094339623) internal successors, (119), 106 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2024-11-27 20:24:27,140 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 72 [2024-11-27 20:24:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:27,140 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2024-11-27 20:24:27,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.1492537313432836) internal successors, (211), 67 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2024-11-27 20:24:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 20:24:27,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:27,141 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:27,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-27 20:24:27,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 20:24:27,342 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:27,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash -230058102, now seen corresponding path program 17 times [2024-11-27 20:24:27,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:27,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786172763] [2024-11-27 20:24:27,342 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:24:27,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:27,398 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-27 20:24:27,398 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:28,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786172763] [2024-11-27 20:24:28,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786172763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847219891] [2024-11-27 20:24:28,265 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:24:28,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:28,267 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:28,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 20:24:28,589 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-27 20:24:28,590 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:28,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-27 20:24:28,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:29,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:24:29,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:24:29,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:24:29,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:24:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:29,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:30,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:24:30,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2024-11-27 20:24:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:31,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847219891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:31,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:31,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 69 [2024-11-27 20:24:31,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962847299] [2024-11-27 20:24:31,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:31,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-27 20:24:31,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:31,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-27 20:24:31,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4450, Unknown=0, NotChecked=0, Total=4692 [2024-11-27 20:24:31,009 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand has 69 states, 69 states have (on average 3.1884057971014492) internal successors, (220), 69 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:32,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:32,286 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2024-11-27 20:24:32,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 20:24:32,287 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.1884057971014492) internal successors, (220), 69 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-27 20:24:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:32,288 INFO L225 Difference]: With dead ends: 114 [2024-11-27 20:24:32,288 INFO L226 Difference]: Without dead ends: 112 [2024-11-27 20:24:32,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=370, Invalid=5950, Unknown=0, NotChecked=0, Total=6320 [2024-11-27 20:24:32,289 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 69 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 2063 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:32,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 848 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2063 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:24:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-27 20:24:32,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2024-11-27 20:24:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1181818181818182) internal successors, (123), 110 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:32,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2024-11-27 20:24:32,314 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 75 [2024-11-27 20:24:32,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:32,314 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2024-11-27 20:24:32,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.1884057971014492) internal successors, (220), 69 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2024-11-27 20:24:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-27 20:24:32,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:32,318 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:32,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 20:24:32,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 20:24:32,519 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:32,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:32,520 INFO L85 PathProgramCache]: Analyzing trace with hash 102379984, now seen corresponding path program 18 times [2024-11-27 20:24:32,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:32,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070298401] [2024-11-27 20:24:32,520 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:24:32,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:32,569 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-27 20:24:32,570 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 112 proven. 257 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:33,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:33,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070298401] [2024-11-27 20:24:33,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070298401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:33,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779591342] [2024-11-27 20:24:33,627 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:24:33,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:33,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:33,630 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:33,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 20:24:34,130 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-27 20:24:34,130 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:34,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-27 20:24:34,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:34,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:24:35,639 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:24:35,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:24:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 147 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:35,683 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:36,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:24:36,716 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 26 treesize of output 20 [2024-11-27 20:24:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 142 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:37,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779591342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:37,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:37,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 74 [2024-11-27 20:24:37,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939887387] [2024-11-27 20:24:37,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:37,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-27 20:24:37,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:37,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-27 20:24:37,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=738, Invalid=4664, Unknown=0, NotChecked=0, Total=5402 [2024-11-27 20:24:37,535 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand has 74 states, 74 states have (on average 3.108108108108108) internal successors, (230), 74 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:38,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:38,564 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2024-11-27 20:24:38,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 20:24:38,565 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.108108108108108) internal successors, (230), 74 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-27 20:24:38,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:38,565 INFO L225 Difference]: With dead ends: 154 [2024-11-27 20:24:38,566 INFO L226 Difference]: Without dead ends: 111 [2024-11-27 20:24:38,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1914 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1000, Invalid=5806, Unknown=0, NotChecked=0, Total=6806 [2024-11-27 20:24:38,567 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:38,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 347 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:24:38,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-27 20:24:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-27 20:24:38,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1090909090909091) internal successors, (122), 110 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:38,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2024-11-27 20:24:38,582 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 79 [2024-11-27 20:24:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:38,582 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2024-11-27 20:24:38,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.108108108108108) internal successors, (230), 74 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2024-11-27 20:24:38,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-27 20:24:38,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:38,583 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:38,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:38,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-27 20:24:38,784 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:38,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:38,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1294918665, now seen corresponding path program 19 times [2024-11-27 20:24:38,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:38,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665327847] [2024-11-27 20:24:38,785 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:24:38,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:39,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:39,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665327847] [2024-11-27 20:24:39,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665327847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:39,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413466933] [2024-11-27 20:24:39,752 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:24:39,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:39,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:39,754 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:39,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 20:24:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:39,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-27 20:24:39,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:40,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:24:40,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:24:40,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:24:41,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:24:41,092 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:41,092 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:41,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:24:41,689 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 118 treesize of output 110 [2024-11-27 20:24:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:42,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413466933] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:42,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:42,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 73 [2024-11-27 20:24:42,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015975268] [2024-11-27 20:24:42,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:42,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-27 20:24:42,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:42,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-27 20:24:42,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=5006, Unknown=0, NotChecked=0, Total=5256 [2024-11-27 20:24:42,336 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 73 states, 73 states have (on average 3.3013698630136985) internal successors, (241), 73 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:43,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:43,690 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2024-11-27 20:24:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:24:43,691 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.3013698630136985) internal successors, (241), 73 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-27 20:24:43,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:43,692 INFO L225 Difference]: With dead ends: 118 [2024-11-27 20:24:43,692 INFO L226 Difference]: Without dead ends: 116 [2024-11-27 20:24:43,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=379, Invalid=6761, Unknown=0, NotChecked=0, Total=7140 [2024-11-27 20:24:43,693 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 65 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:43,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 918 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:24:43,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-27 20:24:43,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2024-11-27 20:24:43,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.105263157894737) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:43,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2024-11-27 20:24:43,714 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 82 [2024-11-27 20:24:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:43,714 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2024-11-27 20:24:43,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.3013698630136985) internal successors, (241), 73 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:43,715 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2024-11-27 20:24:43,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-27 20:24:43,715 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:43,715 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:43,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 20:24:43,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 20:24:43,916 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:43,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:43,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1669912881, now seen corresponding path program 20 times [2024-11-27 20:24:43,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:43,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097331075] [2024-11-27 20:24:43,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:43,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:43,942 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:43,943 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 144 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:45,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:45,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097331075] [2024-11-27 20:24:45,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097331075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:45,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914927842] [2024-11-27 20:24:45,137 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:45,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:45,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:45,142 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:45,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 20:24:45,303 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:45,304 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:45,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-27 20:24:45,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:45,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:24:46,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:24:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:46,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:47,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-27 20:24:47,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-27 20:24:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:47,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914927842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:47,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:47,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 77 [2024-11-27 20:24:47,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315534572] [2024-11-27 20:24:47,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:47,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-27 20:24:47,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:47,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-27 20:24:47,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=5565, Unknown=0, NotChecked=0, Total=5852 [2024-11-27 20:24:47,958 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 77 states, 77 states have (on average 3.2857142857142856) internal successors, (253), 77 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:50,250 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2024-11-27 20:24:50,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-27 20:24:50,251 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.2857142857142856) internal successors, (253), 77 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-27 20:24:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:50,252 INFO L225 Difference]: With dead ends: 166 [2024-11-27 20:24:50,252 INFO L226 Difference]: Without dead ends: 115 [2024-11-27 20:24:50,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2081 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=527, Invalid=8215, Unknown=0, NotChecked=0, Total=8742 [2024-11-27 20:24:50,253 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 59 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 3141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:50,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1423 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3141 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:24:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-27 20:24:50,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-27 20:24:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0964912280701755) internal successors, (125), 114 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2024-11-27 20:24:50,267 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 86 [2024-11-27 20:24:50,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:50,267 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2024-11-27 20:24:50,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.2857142857142856) internal successors, (253), 77 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:50,267 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2024-11-27 20:24:50,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:24:50,268 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:50,268 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:50,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-27 20:24:50,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-27 20:24:50,468 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:50,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:50,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1455869322, now seen corresponding path program 21 times [2024-11-27 20:24:50,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:50,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220774695] [2024-11-27 20:24:50,469 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:50,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:50,538 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-27 20:24:50,538 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:51,646 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:51,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:51,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220774695] [2024-11-27 20:24:51,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220774695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:51,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426013616] [2024-11-27 20:24:51,647 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:51,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:51,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:51,649 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:51,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 20:24:52,145 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-27 20:24:52,145 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:52,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-27 20:24:52,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:52,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:24:52,323 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 20:24:52,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-27 20:24:52,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-27 20:24:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:52,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:53,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:24:53,526 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 118 treesize of output 110 [2024-11-27 20:24:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:54,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426013616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:54,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:54,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 66 [2024-11-27 20:24:54,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293798147] [2024-11-27 20:24:54,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:54,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-27 20:24:54,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:54,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-27 20:24:54,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4084, Unknown=0, NotChecked=0, Total=4290 [2024-11-27 20:24:54,178 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand has 66 states, 66 states have (on average 3.378787878787879) internal successors, (223), 66 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:55,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:55,775 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2024-11-27 20:24:55,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 20:24:55,776 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.378787878787879) internal successors, (223), 66 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-27 20:24:55,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:55,777 INFO L225 Difference]: With dead ends: 122 [2024-11-27 20:24:55,777 INFO L226 Difference]: Without dead ends: 120 [2024-11-27 20:24:55,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=328, Invalid=5678, Unknown=0, NotChecked=0, Total=6006 [2024-11-27 20:24:55,778 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 108 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:55,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1166 Invalid, 2675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:24:55,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-27 20:24:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2024-11-27 20:24:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0932203389830508) internal successors, (129), 118 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2024-11-27 20:24:55,803 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 89 [2024-11-27 20:24:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:55,803 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2024-11-27 20:24:55,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.378787878787879) internal successors, (223), 66 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2024-11-27 20:24:55,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-27 20:24:55,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:55,804 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:55,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-27 20:24:56,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-27 20:24:56,005 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:56,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:56,005 INFO L85 PathProgramCache]: Analyzing trace with hash 883586748, now seen corresponding path program 22 times [2024-11-27 20:24:56,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:56,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517302518] [2024-11-27 20:24:56,005 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:24:56,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:56,045 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:24:56,045 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 220 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:57,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:57,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517302518] [2024-11-27 20:24:57,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517302518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:57,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657074562] [2024-11-27 20:24:57,156 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:24:57,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:57,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:57,158 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:57,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-27 20:24:57,448 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:24:57,448 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:57,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-27 20:24:57,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:57,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:24:59,044 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:24:59,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:24:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 231 proven. 295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:59,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:00,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:25:00,292 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 26 treesize of output 20 [2024-11-27 20:25:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 220 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:01,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657074562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:01,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:01,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 85 [2024-11-27 20:25:01,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104249492] [2024-11-27 20:25:01,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:01,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-27 20:25:01,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:01,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-27 20:25:01,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1119, Invalid=6021, Unknown=0, NotChecked=0, Total=7140 [2024-11-27 20:25:01,286 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 85 states, 85 states have (on average 3.223529411764706) internal successors, (274), 85 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:02,116 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2024-11-27 20:25:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-27 20:25:02,116 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.223529411764706) internal successors, (274), 85 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-27 20:25:02,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:02,117 INFO L225 Difference]: With dead ends: 170 [2024-11-27 20:25:02,117 INFO L226 Difference]: Without dead ends: 119 [2024-11-27 20:25:02,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3093 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1210, Invalid=6272, Unknown=0, NotChecked=0, Total=7482 [2024-11-27 20:25:02,118 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:02,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 572 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:25:02,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-27 20:25:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-27 20:25:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0847457627118644) internal successors, (128), 118 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 128 transitions. [2024-11-27 20:25:02,139 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 128 transitions. Word has length 93 [2024-11-27 20:25:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:02,139 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 128 transitions. [2024-11-27 20:25:02,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 3.223529411764706) internal successors, (274), 85 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 128 transitions. [2024-11-27 20:25:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-27 20:25:02,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:02,140 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:02,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-27 20:25:02,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:02,341 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:02,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash 444223797, now seen corresponding path program 23 times [2024-11-27 20:25:02,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:02,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707107006] [2024-11-27 20:25:02,341 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:25:02,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:02,399 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-27 20:25:02,399 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 0 proven. 568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:03,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:03,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707107006] [2024-11-27 20:25:03,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707107006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:03,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466488357] [2024-11-27 20:25:03,427 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:25:03,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:03,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:03,429 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:03,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-27 20:25:03,706 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-27 20:25:03,707 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:03,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-27 20:25:03,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:04,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:25:04,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:25:04,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:25:05,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:25:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 0 proven. 568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:05,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:06,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:25:06,092 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 118 treesize of output 110 [2024-11-27 20:25:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 0 proven. 568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:06,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466488357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:06,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:06,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 85 [2024-11-27 20:25:06,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469885238] [2024-11-27 20:25:06,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:06,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-27 20:25:06,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:06,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-27 20:25:06,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=6849, Unknown=0, NotChecked=0, Total=7140 [2024-11-27 20:25:06,929 INFO L87 Difference]: Start difference. First operand 119 states and 128 transitions. Second operand has 85 states, 85 states have (on average 3.3294117647058825) internal successors, (283), 85 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:08,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:08,793 INFO L93 Difference]: Finished difference Result 126 states and 135 transitions. [2024-11-27 20:25:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-27 20:25:08,794 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.3294117647058825) internal successors, (283), 85 states have internal predecessors, (283), 0 states have call successors, (0), 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 96 [2024-11-27 20:25:08,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:08,795 INFO L225 Difference]: With dead ends: 126 [2024-11-27 20:25:08,795 INFO L226 Difference]: Without dead ends: 124 [2024-11-27 20:25:08,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2061 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=437, Invalid=9069, Unknown=0, NotChecked=0, Total=9506 [2024-11-27 20:25:08,796 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 144 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 3156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 3158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:08,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1364 Invalid, 3158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3156 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:25:08,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-27 20:25:08,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2024-11-27 20:25:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0819672131147542) internal successors, (132), 122 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2024-11-27 20:25:08,824 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 96 [2024-11-27 20:25:08,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:08,824 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2024-11-27 20:25:08,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 3.3294117647058825) internal successors, (283), 85 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:08,824 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2024-11-27 20:25:08,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-27 20:25:08,825 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:08,825 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:08,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-27 20:25:09,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:09,025 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:09,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:09,026 INFO L85 PathProgramCache]: Analyzing trace with hash -827318789, now seen corresponding path program 24 times [2024-11-27 20:25:09,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:09,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154878154] [2024-11-27 20:25:09,026 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:25:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:09,096 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-27 20:25:09,097 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 220 proven. 395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:10,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:10,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154878154] [2024-11-27 20:25:10,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154878154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:10,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215348365] [2024-11-27 20:25:10,480 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:25:10,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:10,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:10,482 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:10,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-27 20:25:11,181 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-27 20:25:11,182 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:11,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-27 20:25:11,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:11,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:25:13,321 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:25:13,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:25:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 276 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:13,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:14,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:25:14,927 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 26 treesize of output 20 [2024-11-27 20:25:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 264 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:16,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215348365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:16,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:16,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 91 [2024-11-27 20:25:16,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999561509] [2024-11-27 20:25:16,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:16,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-27 20:25:16,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:16,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-27 20:25:16,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1076, Invalid=7114, Unknown=0, NotChecked=0, Total=8190 [2024-11-27 20:25:16,098 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand has 91 states, 91 states have (on average 3.241758241758242) internal successors, (295), 91 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:17,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:17,121 INFO L93 Difference]: Finished difference Result 178 states and 187 transitions. [2024-11-27 20:25:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-27 20:25:17,122 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.241758241758242) internal successors, (295), 91 states have internal predecessors, (295), 0 states have call successors, (0), 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 100 [2024-11-27 20:25:17,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:17,122 INFO L225 Difference]: With dead ends: 178 [2024-11-27 20:25:17,122 INFO L226 Difference]: Without dead ends: 123 [2024-11-27 20:25:17,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2640 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1179, Invalid=7563, Unknown=0, NotChecked=0, Total=8742 [2024-11-27 20:25:17,123 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:17,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 676 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:25:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-27 20:25:17,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-27 20:25:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0737704918032787) internal successors, (131), 122 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2024-11-27 20:25:17,146 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 100 [2024-11-27 20:25:17,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:17,146 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2024-11-27 20:25:17,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.241758241758242) internal successors, (295), 91 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:17,146 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2024-11-27 20:25:17,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-27 20:25:17,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:17,147 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:17,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-27 20:25:17,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:17,348 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:17,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:17,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1805990242, now seen corresponding path program 25 times [2024-11-27 20:25:17,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:17,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316257746] [2024-11-27 20:25:17,348 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:25:17,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:18,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:18,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316257746] [2024-11-27 20:25:18,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316257746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:18,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141726423] [2024-11-27 20:25:18,631 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:25:18,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:18,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:18,632 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:18,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-27 20:25:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:18,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-27 20:25:18,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:19,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:25:19,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:25:19,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:25:20,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:25:20,644 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:20,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:21,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:25:21,545 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 54 treesize of output 50 [2024-11-27 20:25:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:22,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141726423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:22,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:22,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 91 [2024-11-27 20:25:22,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192258478] [2024-11-27 20:25:22,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:22,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-27 20:25:22,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:22,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-27 20:25:22,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=7877, Unknown=0, NotChecked=0, Total=8190 [2024-11-27 20:25:22,498 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand has 91 states, 91 states have (on average 3.340659340659341) internal successors, (304), 91 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:24,695 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2024-11-27 20:25:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 20:25:24,696 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.340659340659341) internal successors, (304), 91 states have internal predecessors, (304), 0 states have call successors, (0), 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 103 [2024-11-27 20:25:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:24,697 INFO L225 Difference]: With dead ends: 130 [2024-11-27 20:25:24,697 INFO L226 Difference]: Without dead ends: 128 [2024-11-27 20:25:24,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2364 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=475, Invalid=10655, Unknown=0, NotChecked=0, Total=11130 [2024-11-27 20:25:24,697 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 138 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 3680 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 3682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:24,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1587 Invalid, 3682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3680 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 20:25:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-27 20:25:24,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2024-11-27 20:25:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0714285714285714) internal successors, (135), 126 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2024-11-27 20:25:24,715 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 103 [2024-11-27 20:25:24,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:24,715 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2024-11-27 20:25:24,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.340659340659341) internal successors, (304), 91 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:24,715 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2024-11-27 20:25:24,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-27 20:25:24,716 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:24,716 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:24,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-27 20:25:24,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:24,916 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:24,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1117857704, now seen corresponding path program 26 times [2024-11-27 20:25:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:24,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847789320] [2024-11-27 20:25:24,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:25:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:24,951 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:25:24,951 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 264 proven. 447 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:26,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847789320] [2024-11-27 20:25:26,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847789320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772917242] [2024-11-27 20:25:26,504 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:25:26,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:26,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:26,505 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:26,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-27 20:25:26,698 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:25:26,698 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:26,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-27 20:25:26,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:27,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:25:28,898 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:25:28,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:25:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 325 proven. 386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:28,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:30,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:25:30,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-27 20:25:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 312 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:31,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772917242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:31,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:31,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 96 [2024-11-27 20:25:31,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620574185] [2024-11-27 20:25:31,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:31,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-27 20:25:31,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:31,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-27 20:25:31,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1214, Invalid=7906, Unknown=0, NotChecked=0, Total=9120 [2024-11-27 20:25:31,935 INFO L87 Difference]: Start difference. First operand 127 states and 135 transitions. Second operand has 96 states, 96 states have (on average 3.2708333333333335) internal successors, (314), 96 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:32,896 INFO L93 Difference]: Finished difference Result 186 states and 194 transitions. [2024-11-27 20:25:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-27 20:25:32,897 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.2708333333333335) internal successors, (314), 96 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-27 20:25:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:32,898 INFO L225 Difference]: With dead ends: 186 [2024-11-27 20:25:32,898 INFO L226 Difference]: Without dead ends: 127 [2024-11-27 20:25:32,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2993 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1323, Invalid=8379, Unknown=0, NotChecked=0, Total=9702 [2024-11-27 20:25:32,899 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:32,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 588 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:25:32,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-27 20:25:32,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-27 20:25:32,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0634920634920635) internal successors, (134), 126 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 134 transitions. [2024-11-27 20:25:32,922 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 134 transitions. Word has length 107 [2024-11-27 20:25:32,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:32,922 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 134 transitions. [2024-11-27 20:25:32,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.2708333333333335) internal successors, (314), 96 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,922 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 134 transitions. [2024-11-27 20:25:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 20:25:32,923 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:32,923 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:32,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-27 20:25:33,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:33,124 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:33,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:33,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1553941919, now seen corresponding path program 27 times [2024-11-27 20:25:33,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:33,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776688577] [2024-11-27 20:25:33,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:25:33,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:33,194 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-27 20:25:33,194 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:34,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776688577] [2024-11-27 20:25:34,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776688577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104809984] [2024-11-27 20:25:34,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:25:34,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:34,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:34,739 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:34,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-27 20:25:35,895 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-27 20:25:35,896 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:35,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-27 20:25:35,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:36,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:25:36,112 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 20:25:36,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-27 20:25:36,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-27 20:25:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:36,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:37,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:25:37,879 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 54 treesize of output 50 [2024-11-27 20:25:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:38,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104809984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:38,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:38,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 35, 35] total 83 [2024-11-27 20:25:38,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094791573] [2024-11-27 20:25:38,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:38,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-27 20:25:38,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:38,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-27 20:25:38,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=6539, Unknown=0, NotChecked=0, Total=6806 [2024-11-27 20:25:38,870 INFO L87 Difference]: Start difference. First operand 127 states and 134 transitions. Second operand has 83 states, 83 states have (on average 3.3373493975903616) internal successors, (277), 83 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:41,171 INFO L93 Difference]: Finished difference Result 134 states and 141 transitions. [2024-11-27 20:25:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-27 20:25:41,172 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.3373493975903616) internal successors, (277), 83 states have internal predecessors, (277), 0 states have call successors, (0), 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 110 [2024-11-27 20:25:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:41,173 INFO L225 Difference]: With dead ends: 134 [2024-11-27 20:25:41,173 INFO L226 Difference]: Without dead ends: 132 [2024-11-27 20:25:41,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1671 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=433, Invalid=9269, Unknown=0, NotChecked=0, Total=9702 [2024-11-27 20:25:41,173 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 69 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 3614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:41,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1477 Invalid, 3614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 20:25:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-27 20:25:41,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2024-11-27 20:25:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0615384615384615) internal successors, (138), 130 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 138 transitions. [2024-11-27 20:25:41,195 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 138 transitions. Word has length 110 [2024-11-27 20:25:41,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:41,195 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 138 transitions. [2024-11-27 20:25:41,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.3373493975903616) internal successors, (277), 83 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:41,195 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 138 transitions. [2024-11-27 20:25:41,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-27 20:25:41,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:41,195 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:41,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-27 20:25:41,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:41,396 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:41,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1051070759, now seen corresponding path program 28 times [2024-11-27 20:25:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:41,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710277238] [2024-11-27 20:25:41,396 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:25:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:41,462 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:25:41,462 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 0 proven. 814 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:43,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:43,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710277238] [2024-11-27 20:25:43,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710277238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:43,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039566341] [2024-11-27 20:25:43,047 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:25:43,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:43,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:43,052 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:43,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-27 20:25:43,840 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:25:43,841 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:43,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-27 20:25:43,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:44,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:25:46,246 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:25:46,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:25:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 378 proven. 436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:46,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:48,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:25:48,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-27 20:25:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 364 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:49,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039566341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:49,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:49,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 103 [2024-11-27 20:25:49,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985021295] [2024-11-27 20:25:49,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:49,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-27 20:25:49,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:49,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-27 20:25:49,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1551, Invalid=8955, Unknown=0, NotChecked=0, Total=10506 [2024-11-27 20:25:49,686 INFO L87 Difference]: Start difference. First operand 131 states and 138 transitions. Second operand has 103 states, 103 states have (on average 3.2718446601941746) internal successors, (337), 103 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:51,278 INFO L93 Difference]: Finished difference Result 194 states and 201 transitions. [2024-11-27 20:25:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-27 20:25:51,279 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.2718446601941746) internal successors, (337), 103 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-11-27 20:25:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:51,280 INFO L225 Difference]: With dead ends: 194 [2024-11-27 20:25:51,280 INFO L226 Difference]: Without dead ends: 131 [2024-11-27 20:25:51,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3865 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1764, Invalid=9792, Unknown=0, NotChecked=0, Total=11556 [2024-11-27 20:25:51,280 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:51,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1133 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:25:51,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-27 20:25:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-27 20:25:51,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0538461538461539) internal successors, (137), 130 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 137 transitions. [2024-11-27 20:25:51,299 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 137 transitions. Word has length 114 [2024-11-27 20:25:51,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:51,300 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 137 transitions. [2024-11-27 20:25:51,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.2718446601941746) internal successors, (337), 103 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:51,300 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 137 transitions. [2024-11-27 20:25:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-27 20:25:51,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:51,301 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:51,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-27 20:25:51,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-27 20:25:51,501 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:51,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:51,502 INFO L85 PathProgramCache]: Analyzing trace with hash -698897330, now seen corresponding path program 29 times [2024-11-27 20:25:51,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:51,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683926089] [2024-11-27 20:25:51,502 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:25:51,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:51,609 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-27 20:25:51,609 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 865 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:52,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:52,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683926089] [2024-11-27 20:25:52,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683926089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:52,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132516840] [2024-11-27 20:25:52,889 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:25:52,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:52,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:52,891 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:52,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-27 20:25:53,451 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-27 20:25:53,451 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:53,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-27 20:25:53,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:54,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:25:54,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:25:54,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:25:55,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:25:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 865 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:55,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:56,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:25:56,944 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 118 treesize of output 110 [2024-11-27 20:25:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 865 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:58,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132516840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:58,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:58,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 103 [2024-11-27 20:25:58,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174138974] [2024-11-27 20:25:58,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:58,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-27 20:25:58,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:58,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-27 20:25:58,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=10152, Unknown=0, NotChecked=0, Total=10506 [2024-11-27 20:25:58,143 INFO L87 Difference]: Start difference. First operand 131 states and 137 transitions. Second operand has 103 states, 103 states have (on average 3.3592233009708736) internal successors, (346), 103 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:01,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:01,010 INFO L93 Difference]: Finished difference Result 138 states and 144 transitions. [2024-11-27 20:26:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-27 20:26:01,011 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.3592233009708736) internal successors, (346), 103 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-27 20:26:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:01,012 INFO L225 Difference]: With dead ends: 138 [2024-11-27 20:26:01,012 INFO L226 Difference]: Without dead ends: 136 [2024-11-27 20:26:01,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3039 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=533, Invalid=13509, Unknown=0, NotChecked=0, Total=14042 [2024-11-27 20:26:01,014 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 71 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 4733 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 4734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:01,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 2045 Invalid, 4734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4733 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 20:26:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-27 20:26:01,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2024-11-27 20:26:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0522388059701493) internal successors, (141), 134 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 141 transitions. [2024-11-27 20:26:01,050 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 141 transitions. Word has length 117 [2024-11-27 20:26:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:01,051 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 141 transitions. [2024-11-27 20:26:01,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.3592233009708736) internal successors, (346), 103 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 141 transitions. [2024-11-27 20:26:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-27 20:26:01,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:01,052 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:01,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-27 20:26:01,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-27 20:26:01,252 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:01,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1472742548, now seen corresponding path program 30 times [2024-11-27 20:26:01,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:01,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470444708] [2024-11-27 20:26:01,253 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:26:01,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:01,480 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-27 20:26:01,480 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 364 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:03,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:03,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470444708] [2024-11-27 20:26:03,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470444708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:03,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037791058] [2024-11-27 20:26:03,113 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:26:03,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:03,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:03,115 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:03,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-27 20:26:03,962 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-27 20:26:03,962 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:03,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-27 20:26:03,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:04,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:26:06,789 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:26:06,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:26:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 435 proven. 489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:06,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:08,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:26:08,994 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 26 treesize of output 20 [2024-11-27 20:26:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 406 proven. 518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:10,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037791058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:10,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:26:10,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39, 39] total 110 [2024-11-27 20:26:10,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889693128] [2024-11-27 20:26:10,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:10,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-11-27 20:26:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:10,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-11-27 20:26:10,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1581, Invalid=10409, Unknown=0, NotChecked=0, Total=11990 [2024-11-27 20:26:10,813 INFO L87 Difference]: Start difference. First operand 135 states and 141 transitions. Second operand has 110 states, 110 states have (on average 3.2363636363636363) internal successors, (356), 110 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:11,968 INFO L93 Difference]: Finished difference Result 202 states and 208 transitions. [2024-11-27 20:26:11,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 20:26:11,969 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.2363636363636363) internal successors, (356), 110 states have internal predecessors, (356), 0 states have call successors, (0), 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 121 [2024-11-27 20:26:11,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:11,970 INFO L225 Difference]: With dead ends: 202 [2024-11-27 20:26:11,970 INFO L226 Difference]: Without dead ends: 135 [2024-11-27 20:26:11,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3900 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1705, Invalid=10951, Unknown=0, NotChecked=0, Total=12656 [2024-11-27 20:26:11,971 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:11,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 622 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:26:11,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-27 20:26:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-27 20:26:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.044776119402985) internal successors, (140), 134 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 140 transitions. [2024-11-27 20:26:12,007 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 140 transitions. Word has length 121 [2024-11-27 20:26:12,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:12,008 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 140 transitions. [2024-11-27 20:26:12,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.2363636363636363) internal successors, (356), 110 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:12,008 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 140 transitions. [2024-11-27 20:26:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 20:26:12,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:12,008 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 18, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:12,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-27 20:26:12,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-27 20:26:12,209 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:12,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:12,209 INFO L85 PathProgramCache]: Analyzing trace with hash 275783565, now seen corresponding path program 31 times [2024-11-27 20:26:12,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:12,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388834450] [2024-11-27 20:26:12,210 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:26:12,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 0 proven. 978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:13,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:13,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388834450] [2024-11-27 20:26:13,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388834450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:13,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909697390] [2024-11-27 20:26:13,713 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:26:13,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:13,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:13,714 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:13,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-27 20:26:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:13,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-27 20:26:13,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:14,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:26:15,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:26:15,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:26:16,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:26:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 0 proven. 978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:16,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:17,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:26:17,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2024-11-27 20:26:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 0 proven. 978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:19,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909697390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:19,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:26:19,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 109 [2024-11-27 20:26:19,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034691972] [2024-11-27 20:26:19,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:19,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-11-27 20:26:19,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:19,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-11-27 20:26:19,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=11396, Unknown=0, NotChecked=0, Total=11772 [2024-11-27 20:26:19,387 INFO L87 Difference]: Start difference. First operand 135 states and 140 transitions. Second operand has 109 states, 109 states have (on average 3.36697247706422) internal successors, (367), 109 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:22,980 INFO L93 Difference]: Finished difference Result 142 states and 147 transitions. [2024-11-27 20:26:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-27 20:26:22,981 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 3.36697247706422) internal successors, (367), 109 states have internal predecessors, (367), 0 states have call successors, (0), 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 124 [2024-11-27 20:26:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:22,982 INFO L225 Difference]: With dead ends: 142 [2024-11-27 20:26:22,982 INFO L226 Difference]: Without dead ends: 140 [2024-11-27 20:26:22,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3405 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=571, Invalid=15431, Unknown=0, NotChecked=0, Total=16002 [2024-11-27 20:26:22,983 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 243 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 5574 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 5577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:22,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2382 Invalid, 5577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5574 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-27 20:26:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-27 20:26:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2024-11-27 20:26:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0434782608695652) internal successors, (144), 138 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 144 transitions. [2024-11-27 20:26:23,016 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 144 transitions. Word has length 124 [2024-11-27 20:26:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:23,016 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 144 transitions. [2024-11-27 20:26:23,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 3.36697247706422) internal successors, (367), 109 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 144 transitions. [2024-11-27 20:26:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-27 20:26:23,017 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:23,017 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 18, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:23,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-27 20:26:23,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-27 20:26:23,218 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:23,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:23,218 INFO L85 PathProgramCache]: Analyzing trace with hash 501678163, now seen corresponding path program 32 times [2024-11-27 20:26:23,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:23,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760107194] [2024-11-27 20:26:23,218 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:26:23,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:23,253 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:26:23,253 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 420 proven. 621 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:25,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:25,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760107194] [2024-11-27 20:26:25,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760107194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:25,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446715001] [2024-11-27 20:26:25,107 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:26:25,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:25,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:25,109 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:25,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-27 20:26:25,372 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:26:25,372 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:25,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-27 20:26:25,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:26,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:26:28,566 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:26:28,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:26:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 496 proven. 545 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:28,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:31,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:26:31,067 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 26 treesize of output 20 [2024-11-27 20:26:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 480 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:32,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446715001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:32,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:26:32,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 114 [2024-11-27 20:26:32,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185299659] [2024-11-27 20:26:32,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:32,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2024-11-27 20:26:32,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:32,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2024-11-27 20:26:32,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1694, Invalid=11188, Unknown=0, NotChecked=0, Total=12882 [2024-11-27 20:26:32,973 INFO L87 Difference]: Start difference. First operand 139 states and 144 transitions. Second operand has 114 states, 114 states have (on average 3.307017543859649) internal successors, (377), 114 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:34,564 INFO L93 Difference]: Finished difference Result 210 states and 215 transitions. [2024-11-27 20:26:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-27 20:26:34,565 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 3.307017543859649) internal successors, (377), 114 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-11-27 20:26:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:34,566 INFO L225 Difference]: With dead ends: 210 [2024-11-27 20:26:34,566 INFO L226 Difference]: Without dead ends: 139 [2024-11-27 20:26:34,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4244 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1821, Invalid=11751, Unknown=0, NotChecked=0, Total=13572 [2024-11-27 20:26:34,567 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:34,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 988 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:26:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-27 20:26:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-27 20:26:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.036231884057971) internal successors, (143), 138 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2024-11-27 20:26:34,608 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 128 [2024-11-27 20:26:34,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:34,608 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2024-11-27 20:26:34,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 3.307017543859649) internal successors, (377), 114 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:34,608 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2024-11-27 20:26:34,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-27 20:26:34,609 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:34,609 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:34,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-27 20:26:34,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-27 20:26:34,810 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:34,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:34,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1973062458, now seen corresponding path program 33 times [2024-11-27 20:26:34,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:34,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53288124] [2024-11-27 20:26:34,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:26:34,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:34,927 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2024-11-27 20:26:34,927 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:36,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1098 backedges. 0 proven. 1098 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:36,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:36,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53288124] [2024-11-27 20:26:36,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53288124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:36,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478587038] [2024-11-27 20:26:36,621 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:26:36,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:36,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:36,623 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:36,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-27 20:26:38,852 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2024-11-27 20:26:38,852 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:38,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-27 20:26:38,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:39,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:26:39,148 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 20:26:39,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-27 20:26:40,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-27 20:26:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1098 backedges. 0 proven. 1098 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:40,332 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:41,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:26:41,741 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 54 treesize of output 50 [2024-11-27 20:26:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1098 backedges. 0 proven. 1098 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:43,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478587038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:43,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:26:43,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 96 [2024-11-27 20:26:43,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441520998] [2024-11-27 20:26:43,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:43,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-27 20:26:43,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:43,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-27 20:26:43,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=8818, Unknown=0, NotChecked=0, Total=9120 [2024-11-27 20:26:43,187 INFO L87 Difference]: Start difference. First operand 139 states and 143 transitions. Second operand has 96 states, 96 states have (on average 3.4479166666666665) internal successors, (331), 96 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:46,843 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2024-11-27 20:26:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 20:26:46,843 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.4479166666666665) internal successors, (331), 96 states have internal predecessors, (331), 0 states have call successors, (0), 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 131 [2024-11-27 20:26:46,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:46,844 INFO L225 Difference]: With dead ends: 146 [2024-11-27 20:26:46,844 INFO L226 Difference]: Without dead ends: 144 [2024-11-27 20:26:46,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=484, Invalid=12398, Unknown=0, NotChecked=0, Total=12882 [2024-11-27 20:26:46,846 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 89 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 5649 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 5650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:46,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 2358 Invalid, 5650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5649 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-27 20:26:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-27 20:26:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2024-11-27 20:26:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0352112676056338) internal successors, (147), 142 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:46,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2024-11-27 20:26:46,872 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 131 [2024-11-27 20:26:46,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:46,873 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2024-11-27 20:26:46,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.4479166666666665) internal successors, (331), 96 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2024-11-27 20:26:46,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-27 20:26:46,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:46,873 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:46,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-27 20:26:47,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:47,074 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:47,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:47,074 INFO L85 PathProgramCache]: Analyzing trace with hash -882258560, now seen corresponding path program 34 times [2024-11-27 20:26:47,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:47,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906346755] [2024-11-27 20:26:47,074 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:26:47,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:47,147 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:26:47,147 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 0 proven. 1165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:49,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:49,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906346755] [2024-11-27 20:26:49,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906346755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:49,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171909299] [2024-11-27 20:26:49,177 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:26:49,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:49,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:49,179 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:49,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-27 20:26:50,448 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:26:50,448 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:50,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-27 20:26:50,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:51,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:26:53,855 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:26:53,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:26:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 561 proven. 604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:53,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:56,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:26:56,812 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 26 treesize of output 20 [2024-11-27 20:26:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 544 proven. 621 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:58,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171909299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:58,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:26:58,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 121 [2024-11-27 20:26:58,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032681248] [2024-11-27 20:26:58,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:58,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-11-27 20:26:58,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:58,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-11-27 20:26:58,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2124, Invalid=12396, Unknown=0, NotChecked=0, Total=14520 [2024-11-27 20:26:58,903 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 121 states, 121 states have (on average 3.3057851239669422) internal successors, (400), 121 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:00,863 INFO L93 Difference]: Finished difference Result 218 states and 222 transitions. [2024-11-27 20:27:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-27 20:27:00,863 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 3.3057851239669422) internal successors, (400), 121 states have internal predecessors, (400), 0 states have call successors, (0), 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 135 [2024-11-27 20:27:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:00,864 INFO L225 Difference]: With dead ends: 218 [2024-11-27 20:27:00,864 INFO L226 Difference]: Without dead ends: 143 [2024-11-27 20:27:00,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5362 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2373, Invalid=13377, Unknown=0, NotChecked=0, Total=15750 [2024-11-27 20:27:00,866 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:00,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1225 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:27:00,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-27 20:27:00,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-27 20:27:00,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.028169014084507) internal successors, (146), 142 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:00,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2024-11-27 20:27:00,906 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 135 [2024-11-27 20:27:00,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:00,907 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 146 transitions. [2024-11-27 20:27:00,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 3.3057851239669422) internal successors, (400), 121 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 146 transitions. [2024-11-27 20:27:00,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-27 20:27:00,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:00,908 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:00,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-27 20:27:01,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:01,109 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:01,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:01,109 INFO L85 PathProgramCache]: Analyzing trace with hash 313950393, now seen corresponding path program 35 times [2024-11-27 20:27:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:01,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237579400] [2024-11-27 20:27:01,110 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:27:01,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:01,189 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-11-27 20:27:01,189 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:27:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:03,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237579400] [2024-11-27 20:27:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237579400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:27:03,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765700526] [2024-11-27 20:27:03,250 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:27:03,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:03,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:27:03,252 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:27:03,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-27 20:27:04,035 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-11-27 20:27:04,035 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:27:04,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-27 20:27:04,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:05,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:27:05,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:05,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:27:07,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:27:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:07,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:27:08,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:27:08,899 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 118 treesize of output 110 [2024-11-27 20:27:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:10,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765700526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:27:10,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:27:10,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 121 [2024-11-27 20:27:10,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401481866] [2024-11-27 20:27:10,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:27:10,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-11-27 20:27:10,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:10,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-11-27 20:27:10,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=14103, Unknown=0, NotChecked=0, Total=14520 [2024-11-27 20:27:10,615 INFO L87 Difference]: Start difference. First operand 143 states and 146 transitions. Second operand has 121 states, 121 states have (on average 3.3801652892561984) internal successors, (409), 121 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:14,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:14,813 INFO L93 Difference]: Finished difference Result 150 states and 153 transitions. [2024-11-27 20:27:14,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-27 20:27:14,813 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 3.3801652892561984) internal successors, (409), 121 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2024-11-27 20:27:14,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:14,814 INFO L225 Difference]: With dead ends: 150 [2024-11-27 20:27:14,814 INFO L226 Difference]: Without dead ends: 148 [2024-11-27 20:27:14,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4206 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=629, Invalid=18831, Unknown=0, NotChecked=0, Total=19460 [2024-11-27 20:27:14,816 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 95 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 6704 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 6705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:14,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 2788 Invalid, 6705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6704 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-27 20:27:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-27 20:27:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2024-11-27 20:27:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0273972602739727) internal successors, (150), 146 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 150 transitions. [2024-11-27 20:27:14,856 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 150 transitions. Word has length 138 [2024-11-27 20:27:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:14,856 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 150 transitions. [2024-11-27 20:27:14,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 3.3801652892561984) internal successors, (409), 121 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 150 transitions. [2024-11-27 20:27:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-27 20:27:14,857 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:14,858 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:14,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-27 20:27:15,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-27 20:27:15,058 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:15,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash -427758721, now seen corresponding path program 36 times [2024-11-27 20:27:15,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:15,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515342571] [2024-11-27 20:27:15,059 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:27:15,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:15,181 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-27 20:27:15,181 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:27:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 544 proven. 752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:17,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:17,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515342571] [2024-11-27 20:27:17,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515342571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:27:17,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934027705] [2024-11-27 20:27:17,374 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:27:17,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:17,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:27:17,376 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:27:17,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-27 20:27:19,476 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-27 20:27:19,476 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:27:19,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-27 20:27:19,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:20,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:27:23,395 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:27:23,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:27:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 630 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:23,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:27:26,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:27:26,345 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 26 treesize of output 20 [2024-11-27 20:27:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 612 proven. 684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:28,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934027705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:27:28,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:27:28,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 126 [2024-11-27 20:27:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324286245] [2024-11-27 20:27:28,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:27:28,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-11-27 20:27:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:28,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-11-27 20:27:28,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2059, Invalid=13691, Unknown=0, NotChecked=0, Total=15750 [2024-11-27 20:27:28,651 INFO L87 Difference]: Start difference. First operand 147 states and 150 transitions. Second operand has 126 states, 126 states have (on average 3.3253968253968256) internal successors, (419), 126 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:30,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:30,683 INFO L93 Difference]: Finished difference Result 226 states and 229 transitions. [2024-11-27 20:27:30,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-27 20:27:30,683 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 3.3253968253968256) internal successors, (419), 126 states have internal predecessors, (419), 0 states have call successors, (0), 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 142 [2024-11-27 20:27:30,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:30,684 INFO L225 Difference]: With dead ends: 226 [2024-11-27 20:27:30,684 INFO L226 Difference]: Without dead ends: 147 [2024-11-27 20:27:30,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5198 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2198, Invalid=14314, Unknown=0, NotChecked=0, Total=16512 [2024-11-27 20:27:30,685 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 2982 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:30,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1281 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2982 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 20:27:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-27 20:27:30,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-27 20:27:30,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0205479452054795) internal successors, (149), 146 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:30,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2024-11-27 20:27:30,725 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 142 [2024-11-27 20:27:30,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:30,725 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2024-11-27 20:27:30,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 3.3253968253968256) internal successors, (419), 126 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:30,726 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2024-11-27 20:27:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 20:27:30,726 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:30,726 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 21, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:30,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-27 20:27:30,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-27 20:27:30,927 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:30,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:30,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1523067354, now seen corresponding path program 37 times [2024-11-27 20:27:30,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:30,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86306139] [2024-11-27 20:27:30,928 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:27:30,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1359 backedges. 0 proven. 1359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:33,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86306139] [2024-11-27 20:27:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86306139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:27:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666954414] [2024-11-27 20:27:33,127 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:27:33,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:33,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:27:33,129 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:27:33,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-27 20:27:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:33,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-27 20:27:33,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:34,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:27:34,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:27:34,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:27:36,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:27:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1359 backedges. 0 proven. 1359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:36,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:27:38,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:27:38,882 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 54 treesize of output 50 [2024-11-27 20:27:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1359 backedges. 0 proven. 1359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:40,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666954414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:27:40,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:27:40,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 127 [2024-11-27 20:27:40,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391462762] [2024-11-27 20:27:40,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:27:40,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2024-11-27 20:27:40,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:40,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2024-11-27 20:27:40,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=15563, Unknown=0, NotChecked=0, Total=16002 [2024-11-27 20:27:40,939 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand has 127 states, 127 states have (on average 3.3858267716535435) internal successors, (430), 127 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:45,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:45,752 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2024-11-27 20:27:45,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-27 20:27:45,753 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 3.3858267716535435) internal successors, (430), 127 states have internal predecessors, (430), 0 states have call successors, (0), 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 145 [2024-11-27 20:27:45,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:45,754 INFO L225 Difference]: With dead ends: 154 [2024-11-27 20:27:45,754 INFO L226 Difference]: Without dead ends: 152 [2024-11-27 20:27:45,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4678 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=667, Invalid=21089, Unknown=0, NotChecked=0, Total=21756 [2024-11-27 20:27:45,755 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 265 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 7298 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 7301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:45,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 3067 Invalid, 7301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7298 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 20:27:45,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-27 20:27:45,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2024-11-27 20:27:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.02) internal successors, (153), 150 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:45,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2024-11-27 20:27:45,792 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 145 [2024-11-27 20:27:45,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:45,793 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2024-11-27 20:27:45,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 3.3858267716535435) internal successors, (430), 127 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:45,793 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2024-11-27 20:27:45,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-27 20:27:45,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:45,794 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 21, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:45,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-27 20:27:45,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-27 20:27:45,994 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:45,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash 72335980, now seen corresponding path program 38 times [2024-11-27 20:27:45,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:45,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949918750] [2024-11-27 20:27:45,995 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:27:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:46,054 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:27:46,054 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:27:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1434 backedges. 612 proven. 822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:48,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:48,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949918750] [2024-11-27 20:27:48,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949918750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:27:48,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861644570] [2024-11-27 20:27:48,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:27:48,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:48,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:27:48,637 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:27:48,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-27 20:27:48,992 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:27:48,992 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:27:48,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-27 20:27:48,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:50,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:27:53,322 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:27:53,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:27:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1434 backedges. 703 proven. 731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:53,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:27:56,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:27:56,502 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 26 treesize of output 20 [2024-11-27 20:27:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1434 backedges. 684 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:59,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861644570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:27:59,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:27:59,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 132 [2024-11-27 20:27:59,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476582265] [2024-11-27 20:27:59,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:27:59,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2024-11-27 20:27:59,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:59,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2024-11-27 20:27:59,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=15037, Unknown=0, NotChecked=0, Total=17292 [2024-11-27 20:27:59,044 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand has 132 states, 132 states have (on average 3.3333333333333335) internal successors, (440), 132 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:01,147 INFO L93 Difference]: Finished difference Result 236 states and 239 transitions. [2024-11-27 20:28:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-27 20:28:01,148 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 3.3333333333333335) internal successors, (440), 132 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-11-27 20:28:01,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:01,149 INFO L225 Difference]: With dead ends: 236 [2024-11-27 20:28:01,149 INFO L226 Difference]: Without dead ends: 153 [2024-11-27 20:28:01,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5711 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=2400, Invalid=15690, Unknown=0, NotChecked=0, Total=18090 [2024-11-27 20:28:01,150 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 9 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 2975 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:01,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1297 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2975 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 20:28:01,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-27 20:28:01,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-11-27 20:28:01,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.019736842105263) internal successors, (155), 152 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2024-11-27 20:28:01,185 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 149 [2024-11-27 20:28:01,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:01,185 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2024-11-27 20:28:01,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 3.3333333333333335) internal successors, (440), 132 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:01,186 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2024-11-27 20:28:01,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-27 20:28:01,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:01,187 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:01,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-27 20:28:01,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-27 20:28:01,387 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:01,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:01,388 INFO L85 PathProgramCache]: Analyzing trace with hash 311136262, now seen corresponding path program 3 times [2024-11-27 20:28:01,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:01,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140851428] [2024-11-27 20:28:01,388 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:28:01,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:01,457 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-27 20:28:01,458 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2024-11-27 20:28:02,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140851428] [2024-11-27 20:28:02,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140851428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:28:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356330881] [2024-11-27 20:28:02,018 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:28:02,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:02,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:02,020 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:02,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-27 20:28:04,380 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-27 20:28:04,381 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:04,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 20:28:04,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2024-11-27 20:28:04,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2024-11-27 20:28:05,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356330881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:05,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:28:05,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 72 [2024-11-27 20:28:05,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142205445] [2024-11-27 20:28:05,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:05,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-27 20:28:05,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:05,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-27 20:28:05,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=2949, Unknown=0, NotChecked=0, Total=5256 [2024-11-27 20:28:05,920 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand has 73 states, 73 states have (on average 2.9178082191780823) internal successors, (213), 72 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:07,527 INFO L93 Difference]: Finished difference Result 2273 states and 2322 transitions. [2024-11-27 20:28:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-27 20:28:07,528 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.9178082191780823) internal successors, (213), 72 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-11-27 20:28:07,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:07,534 INFO L225 Difference]: With dead ends: 2273 [2024-11-27 20:28:07,534 INFO L226 Difference]: Without dead ends: 2191 [2024-11-27 20:28:07,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3217 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3480, Invalid=5640, Unknown=0, NotChecked=0, Total=9120 [2024-11-27 20:28:07,535 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 715 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:07,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 322 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:28:07,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2024-11-27 20:28:07,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 223. [2024-11-27 20:28:07,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.117117117117117) internal successors, (248), 222 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 248 transitions. [2024-11-27 20:28:07,639 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 248 transitions. Word has length 150 [2024-11-27 20:28:07,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:07,639 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 248 transitions. [2024-11-27 20:28:07,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.9178082191780823) internal successors, (213), 72 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:07,640 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 248 transitions. [2024-11-27 20:28:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-27 20:28:07,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:07,641 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 22, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:07,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-27 20:28:07,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:07,842 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:07,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:07,843 INFO L85 PathProgramCache]: Analyzing trace with hash 63036901, now seen corresponding path program 39 times [2024-11-27 20:28:07,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:07,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93819587] [2024-11-27 20:28:07,843 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:28:07,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:07,950 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-27 20:28:07,950 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:10,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:10,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93819587] [2024-11-27 20:28:10,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93819587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:28:10,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738204864] [2024-11-27 20:28:10,123 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:28:10,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:10,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:10,127 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:10,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-27 20:28:16,552 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-27 20:28:16,552 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:16,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-27 20:28:16,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:16,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:28:16,869 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 20:28:16,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-27 20:28:18,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-27 20:28:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:18,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:20,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:28:20,397 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 118 treesize of output 110 [2024-11-27 20:28:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:22,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738204864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:22,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:28:22,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 111 [2024-11-27 20:28:22,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224942751] [2024-11-27 20:28:22,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:22,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-11-27 20:28:22,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:22,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-11-27 20:28:22,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=11860, Unknown=0, NotChecked=0, Total=12210 [2024-11-27 20:28:22,429 INFO L87 Difference]: Start difference. First operand 223 states and 248 transitions. Second operand has 111 states, 111 states have (on average 3.4684684684684686) internal successors, (385), 111 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:27,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:27,515 INFO L93 Difference]: Finished difference Result 230 states and 255 transitions. [2024-11-27 20:28:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-27 20:28:27,515 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 3.4684684684684686) internal successors, (385), 111 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2024-11-27 20:28:27,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:27,517 INFO L225 Difference]: With dead ends: 230 [2024-11-27 20:28:27,517 INFO L226 Difference]: Without dead ends: 228 [2024-11-27 20:28:27,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2921 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=562, Invalid=16730, Unknown=0, NotChecked=0, Total=17292 [2024-11-27 20:28:27,518 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 192 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 7159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 7161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:27,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 3012 Invalid, 7161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7159 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-27 20:28:27,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-27 20:28:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2024-11-27 20:28:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.1150442477876106) internal successors, (252), 226 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 252 transitions. [2024-11-27 20:28:27,613 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 252 transitions. Word has length 152 [2024-11-27 20:28:27,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:27,613 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 252 transitions. [2024-11-27 20:28:27,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 3.4684684684684686) internal successors, (385), 111 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 252 transitions. [2024-11-27 20:28:27,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-27 20:28:27,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:27,614 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 22, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:27,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-27 20:28:27,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-27 20:28:27,815 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:27,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:27,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2063717035, now seen corresponding path program 40 times [2024-11-27 20:28:27,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:27,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62668176] [2024-11-27 20:28:27,815 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:28:27,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:27,897 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:28:27,897 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 0 proven. 1579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:30,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:30,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62668176] [2024-11-27 20:28:30,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62668176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:28:30,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785954195] [2024-11-27 20:28:30,463 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:28:30,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:30,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:30,465 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:30,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-27 20:28:32,811 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:28:32,812 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:32,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-27 20:28:32,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:34,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:28:37,532 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:28:37,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:28:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 780 proven. 799 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:37,636 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:41,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:28:41,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-27 20:28:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 760 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:44,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785954195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:44,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:28:44,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 140 [2024-11-27 20:28:44,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931037848] [2024-11-27 20:28:44,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:44,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2024-11-27 20:28:44,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:44,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2024-11-27 20:28:44,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2796, Invalid=16664, Unknown=0, NotChecked=0, Total=19460 [2024-11-27 20:28:44,148 INFO L87 Difference]: Start difference. First operand 227 states and 252 transitions. Second operand has 140 states, 140 states have (on average 3.307142857142857) internal successors, (463), 140 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:47,123 INFO L93 Difference]: Finished difference Result 314 states and 339 transitions. [2024-11-27 20:28:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-27 20:28:47,123 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 3.307142857142857) internal successors, (463), 140 states have internal predecessors, (463), 0 states have call successors, (0), 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 156 [2024-11-27 20:28:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:47,125 INFO L225 Difference]: With dead ends: 314 [2024-11-27 20:28:47,125 INFO L226 Difference]: Without dead ends: 227 [2024-11-27 20:28:47,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7141 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=3081, Invalid=17799, Unknown=0, NotChecked=0, Total=20880 [2024-11-27 20:28:47,126 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 9 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 3895 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 3895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:47,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1758 Invalid, 3895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3895 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 20:28:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-27 20:28:47,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2024-11-27 20:28:47,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.1106194690265487) internal successors, (251), 226 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:47,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 251 transitions. [2024-11-27 20:28:47,238 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 251 transitions. Word has length 156 [2024-11-27 20:28:47,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:47,239 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 251 transitions. [2024-11-27 20:28:47,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 3.307142857142857) internal successors, (463), 140 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:47,239 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 251 transitions. [2024-11-27 20:28:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-27 20:28:47,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:47,240 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 23, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:47,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-27 20:28:47,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-27 20:28:47,441 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:47,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:47,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1887014162, now seen corresponding path program 41 times [2024-11-27 20:28:47,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:47,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611124982] [2024-11-27 20:28:47,442 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:28:47,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:47,616 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-27 20:28:47,616 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 0 proven. 1648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:49,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:49,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611124982] [2024-11-27 20:28:49,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611124982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:28:49,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600245433] [2024-11-27 20:28:49,854 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:28:49,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:49,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:49,857 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:49,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-27 20:28:51,165 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-27 20:28:51,165 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:51,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-27 20:28:51,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:52,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:28:52,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:28:52,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:28:55,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:28:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 0 proven. 1648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:55,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:57,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:28:57,279 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 118 treesize of output 110 [2024-11-27 20:28:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 0 proven. 1648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:59,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600245433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:59,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:28:59,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 139 [2024-11-27 20:28:59,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556040756] [2024-11-27 20:28:59,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:59,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-11-27 20:28:59,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:59,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-11-27 20:28:59,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=18702, Unknown=0, NotChecked=0, Total=19182 [2024-11-27 20:28:59,717 INFO L87 Difference]: Start difference. First operand 227 states and 251 transitions. Second operand has 139 states, 139 states have (on average 3.3956834532374103) internal successors, (472), 139 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:05,661 INFO L93 Difference]: Finished difference Result 234 states and 258 transitions. [2024-11-27 20:29:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-27 20:29:05,662 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 3.3956834532374103) internal successors, (472), 139 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2024-11-27 20:29:05,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:05,663 INFO L225 Difference]: With dead ends: 234 [2024-11-27 20:29:05,663 INFO L226 Difference]: Without dead ends: 232 [2024-11-27 20:29:05,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5562 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=725, Invalid=25035, Unknown=0, NotChecked=0, Total=25760 [2024-11-27 20:29:05,664 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 289 mSDsluCounter, 3710 mSDsCounter, 0 mSdLazyCounter, 9082 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 9085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:05,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 3759 Invalid, 9085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9082 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-27 20:29:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-27 20:29:05,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2024-11-27 20:29:05,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.108695652173913) internal successors, (255), 230 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 255 transitions. [2024-11-27 20:29:05,745 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 255 transitions. Word has length 159 [2024-11-27 20:29:05,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:05,745 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 255 transitions. [2024-11-27 20:29:05,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 3.3956834532374103) internal successors, (472), 139 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:05,746 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 255 transitions. [2024-11-27 20:29:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-27 20:29:05,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:05,747 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 23, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:05,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-27 20:29:05,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-27 20:29:05,947 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:05,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1489249112, now seen corresponding path program 42 times [2024-11-27 20:29:05,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:05,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229920249] [2024-11-27 20:29:05,948 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:29:05,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:06,060 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-11-27 20:29:06,060 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1731 backedges. 760 proven. 971 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:08,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:08,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229920249] [2024-11-27 20:29:08,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229920249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:08,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335210791] [2024-11-27 20:29:08,895 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:29:08,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:08,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:08,896 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:08,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-27 20:29:13,400 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-11-27 20:29:13,400 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:13,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-27 20:29:13,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:14,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:29:18,473 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:29:18,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:29:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1731 backedges. 861 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:18,550 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:22,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:29:22,224 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 26 treesize of output 20 [2024-11-27 20:29:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1731 backedges. 840 proven. 891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:25,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335210791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:25,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:29:25,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 144 [2024-11-27 20:29:25,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849355893] [2024-11-27 20:29:25,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:25,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2024-11-27 20:29:25,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:25,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2024-11-27 20:29:25,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2674, Invalid=17918, Unknown=0, NotChecked=0, Total=20592 [2024-11-27 20:29:25,183 INFO L87 Difference]: Start difference. First operand 231 states and 255 transitions. Second operand has 144 states, 144 states have (on average 3.3472222222222223) internal successors, (482), 144 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:27,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:27,056 INFO L93 Difference]: Finished difference Result 322 states and 346 transitions. [2024-11-27 20:29:27,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-27 20:29:27,056 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 3.3472222222222223) internal successors, (482), 144 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-11-27 20:29:27,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:27,058 INFO L225 Difference]: With dead ends: 322 [2024-11-27 20:29:27,058 INFO L226 Difference]: Without dead ends: 231 [2024-11-27 20:29:27,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6809 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=2831, Invalid=18631, Unknown=0, NotChecked=0, Total=21462 [2024-11-27 20:29:27,059 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:27,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1084 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:29:27,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-27 20:29:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-27 20:29:27,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.1043478260869566) internal successors, (254), 230 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 254 transitions. [2024-11-27 20:29:27,185 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 254 transitions. Word has length 163 [2024-11-27 20:29:27,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:27,185 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 254 transitions. [2024-11-27 20:29:27,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 3.3472222222222223) internal successors, (482), 144 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:27,186 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 254 transitions. [2024-11-27 20:29:27,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:29:27,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:27,187 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 24, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:27,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-27 20:29:27,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-27 20:29:27,387 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:27,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:27,388 INFO L85 PathProgramCache]: Analyzing trace with hash 94385937, now seen corresponding path program 43 times [2024-11-27 20:29:27,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:27,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702027842] [2024-11-27 20:29:27,388 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:29:27,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 0 proven. 1803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:29,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:29,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702027842] [2024-11-27 20:29:29,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702027842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:29,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704153644] [2024-11-27 20:29:29,875 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:29:29,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:29,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:29,877 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:29,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-27 20:29:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:30,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-27 20:29:30,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:32,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:29:32,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:29:32,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:29:34,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:29:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 0 proven. 1803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:34,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:36,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:29:36,626 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 118 treesize of output 110 [2024-11-27 20:29:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 0 proven. 1803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:39,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704153644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:39,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:29:39,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 145 [2024-11-27 20:29:39,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35447464] [2024-11-27 20:29:39,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:39,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2024-11-27 20:29:39,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:39,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2024-11-27 20:29:39,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=20378, Unknown=0, NotChecked=0, Total=20880 [2024-11-27 20:29:39,281 INFO L87 Difference]: Start difference. First operand 231 states and 254 transitions. Second operand has 145 states, 145 states have (on average 3.4) internal successors, (493), 145 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:45,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:45,623 INFO L93 Difference]: Finished difference Result 238 states and 261 transitions. [2024-11-27 20:29:45,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-27 20:29:45,623 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 145 states have (on average 3.4) internal successors, (493), 145 states have internal predecessors, (493), 0 states have call successors, (0), 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 166 [2024-11-27 20:29:45,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:45,624 INFO L225 Difference]: With dead ends: 238 [2024-11-27 20:29:45,624 INFO L226 Difference]: Without dead ends: 236 [2024-11-27 20:29:45,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6054 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=763, Invalid=27629, Unknown=0, NotChecked=0, Total=28392 [2024-11-27 20:29:45,626 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 200 mSDsluCounter, 3868 mSDsCounter, 0 mSdLazyCounter, 9382 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 9384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:45,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 3919 Invalid, 9384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9382 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-27 20:29:45,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-27 20:29:45,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235. [2024-11-27 20:29:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1025641025641026) internal successors, (258), 234 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 258 transitions. [2024-11-27 20:29:45,687 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 258 transitions. Word has length 166 [2024-11-27 20:29:45,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:45,688 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 258 transitions. [2024-11-27 20:29:45,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 3.4) internal successors, (493), 145 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 258 transitions. [2024-11-27 20:29:45,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-27 20:29:45,689 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:45,689 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 24, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:45,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-27 20:29:45,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-27 20:29:45,889 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:45,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:45,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1182250455, now seen corresponding path program 44 times [2024-11-27 20:29:45,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:45,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973539152] [2024-11-27 20:29:45,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:29:45,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:45,941 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:29:45,941 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 840 proven. 1050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:48,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:48,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973539152] [2024-11-27 20:29:48,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973539152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:48,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465629642] [2024-11-27 20:29:48,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:29:48,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:48,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:48,921 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:48,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-27 20:29:49,334 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:29:49,334 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:49,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-27 20:29:49,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:50,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:29:53,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-27 20:29:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 0 proven. 1890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:53,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:55,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-27 20:29:55,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-27 20:29:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 0 proven. 1890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:57,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465629642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:57,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:29:57,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 149 [2024-11-27 20:29:57,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872422020] [2024-11-27 20:29:57,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:57,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-11-27 20:29:57,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:57,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-11-27 20:29:57,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=21350, Unknown=0, NotChecked=0, Total=22052 [2024-11-27 20:29:57,971 INFO L87 Difference]: Start difference. First operand 235 states and 258 transitions. Second operand has 149 states, 149 states have (on average 3.389261744966443) internal successors, (505), 149 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:06,171 INFO L93 Difference]: Finished difference Result 334 states and 358 transitions. [2024-11-27 20:30:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-27 20:30:06,172 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 3.389261744966443) internal successors, (505), 149 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-11-27 20:30:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:06,172 INFO L225 Difference]: With dead ends: 334 [2024-11-27 20:30:06,172 INFO L226 Difference]: Without dead ends: 235 [2024-11-27 20:30:06,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8063 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=1278, Invalid=29874, Unknown=0, NotChecked=0, Total=31152 [2024-11-27 20:30:06,173 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 104 mSDsluCounter, 4637 mSDsCounter, 0 mSdLazyCounter, 11172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 4691 SdHoareTripleChecker+Invalid, 11172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:06,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 4691 Invalid, 11172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11172 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-27 20:30:06,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-27 20:30:06,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-11-27 20:30:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.0982905982905984) internal successors, (257), 234 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 257 transitions. [2024-11-27 20:30:06,281 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 257 transitions. Word has length 170 [2024-11-27 20:30:06,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:06,281 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 257 transitions. [2024-11-27 20:30:06,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 3.389261744966443) internal successors, (505), 149 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 257 transitions. [2024-11-27 20:30:06,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-27 20:30:06,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:06,283 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 25, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:06,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:06,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-27 20:30:06,483 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:06,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1915334654, now seen corresponding path program 45 times [2024-11-27 20:30:06,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:06,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421220918] [2024-11-27 20:30:06,484 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:30:06,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:06,716 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2024-11-27 20:30:06,716 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 809 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:12,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:12,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421220918] [2024-11-27 20:30:12,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421220918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:12,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515949862] [2024-11-27 20:30:12,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:30:12,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:12,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:12,862 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:12,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-27 20:30:26,504 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2024-11-27 20:30:26,504 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:26,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-27 20:30:26,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:27,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:30:28,023 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 20:30:28,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-27 20:30:30,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-27 20:30:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 0 proven. 1965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:30,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:32,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:30:32,831 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 54 treesize of output 50 [2024-11-27 20:30:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 0 proven. 1965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:35,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515949862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:35,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:35,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 52, 52] total 154 [2024-11-27 20:30:35,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499742872] [2024-11-27 20:30:35,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:35,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2024-11-27 20:30:35,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:35,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2024-11-27 20:30:35,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1582, Invalid=21980, Unknown=0, NotChecked=0, Total=23562 [2024-11-27 20:30:35,294 INFO L87 Difference]: Start difference. First operand 235 states and 257 transitions. Second operand has 154 states, 154 states have (on average 3.3376623376623376) internal successors, (514), 154 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:48,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:48,238 INFO L93 Difference]: Finished difference Result 339 states and 363 transitions. [2024-11-27 20:30:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-27 20:30:48,238 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 3.3376623376623376) internal successors, (514), 154 states have internal predecessors, (514), 0 states have call successors, (0), 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 173 [2024-11-27 20:30:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:48,240 INFO L225 Difference]: With dead ends: 339 [2024-11-27 20:30:48,240 INFO L226 Difference]: Without dead ends: 240 [2024-11-27 20:30:48,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18038 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=2873, Invalid=49797, Unknown=0, NotChecked=0, Total=52670 [2024-11-27 20:30:48,242 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 327 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 7605 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 7612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:48,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 3103 Invalid, 7612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7605 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-27 20:30:48,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-27 20:30:48,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2024-11-27 20:30:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.0924369747899159) internal successors, (260), 238 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 260 transitions. [2024-11-27 20:30:48,331 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 260 transitions. Word has length 173 [2024-11-27 20:30:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:48,331 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 260 transitions. [2024-11-27 20:30:48,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 3.3376623376623376) internal successors, (514), 154 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:48,332 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 260 transitions. [2024-11-27 20:30:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-27 20:30:48,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:48,333 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 26, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:48,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-27 20:30:48,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:48,534 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:48,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:48,534 INFO L85 PathProgramCache]: Analyzing trace with hash 585075773, now seen corresponding path program 46 times [2024-11-27 20:30:48,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:48,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418902303] [2024-11-27 20:30:48,534 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:30:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:48,756 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:30:48,757 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2134 backedges. 0 proven. 2134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:51,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418902303] [2024-11-27 20:30:51,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418902303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239955378] [2024-11-27 20:30:51,622 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:30:51,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:51,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:51,624 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:51,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-27 20:30:58,121 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:30:58,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:58,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 135 conjuncts are in the unsatisfiable core [2024-11-27 20:30:58,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:31:00,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:31:00,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:31:00,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:31:03,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:31:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2134 backedges. 0 proven. 2134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:31:03,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:31:06,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:31:06,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2024-11-27 20:31:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2134 backedges. 0 proven. 2134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:31:09,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239955378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:31:09,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:31:09,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 157 [2024-11-27 20:31:09,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286891453] [2024-11-27 20:31:09,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:31:09,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 157 states [2024-11-27 20:31:09,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:09,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2024-11-27 20:31:09,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=23949, Unknown=0, NotChecked=0, Total=24492 [2024-11-27 20:31:09,439 INFO L87 Difference]: Start difference. First operand 239 states and 260 transitions. Second operand has 157 states, 157 states have (on average 3.4076433121019107) internal successors, (535), 157 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:17,209 INFO L93 Difference]: Finished difference Result 246 states and 267 transitions. [2024-11-27 20:31:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-27 20:31:17,210 INFO L78 Accepts]: Start accepts. Automaton has has 157 states, 157 states have (on average 3.4076433121019107) internal successors, (535), 157 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-11-27 20:31:17,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:17,211 INFO L225 Difference]: With dead ends: 246 [2024-11-27 20:31:17,211 INFO L226 Difference]: Without dead ends: 244 [2024-11-27 20:31:17,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7107 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=821, Invalid=32121, Unknown=0, NotChecked=0, Total=32942 [2024-11-27 20:31:17,212 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 329 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 11398 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 4737 SdHoareTripleChecker+Invalid, 11401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:31:17,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 4737 Invalid, 11401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11398 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-27 20:31:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-27 20:31:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2024-11-27 20:31:17,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.0909090909090908) internal successors, (264), 242 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 264 transitions. [2024-11-27 20:31:17,304 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 264 transitions. Word has length 180 [2024-11-27 20:31:17,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:17,304 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 264 transitions. [2024-11-27 20:31:17,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 157 states have (on average 3.4076433121019107) internal successors, (535), 157 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 264 transitions. [2024-11-27 20:31:17,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-27 20:31:17,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:17,305 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 26, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1] [2024-11-27 20:31:17,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-27 20:31:17,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:17,506 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:17,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:17,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1550882051, now seen corresponding path program 47 times [2024-11-27 20:31:17,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:17,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288629930] [2024-11-27 20:31:17,507 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:31:17,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:31:17,678 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2024-11-27 20:31:17,678 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:31:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2229 backedges. 1104 proven. 1125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:31:21,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:31:21,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288629930] [2024-11-27 20:31:21,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288629930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:31:21,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93098206] [2024-11-27 20:31:21,410 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:31:21,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:21,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:31:21,412 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:31:21,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-27 20:31:30,936 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2024-11-27 20:31:30,936 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:31:30,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 137 conjuncts are in the unsatisfiable core [2024-11-27 20:31:30,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:31:32,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:31:35,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:31:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2229 backedges. 0 proven. 2229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:31:35,327 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:31:37,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-27 20:31:37,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-27 20:31:40,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2229 backedges. 0 proven. 2229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:31:40,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93098206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:31:40,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:31:40,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 161 [2024-11-27 20:31:40,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470646623] [2024-11-27 20:31:40,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:31:40,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2024-11-27 20:31:40,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:40,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2024-11-27 20:31:40,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1457, Invalid=24303, Unknown=0, NotChecked=0, Total=25760 [2024-11-27 20:31:40,098 INFO L87 Difference]: Start difference. First operand 243 states and 264 transitions. Second operand has 161 states, 161 states have (on average 3.3975155279503104) internal successors, (547), 161 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:49,174 INFO L93 Difference]: Finished difference Result 350 states and 372 transitions. [2024-11-27 20:31:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-27 20:31:49,175 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 3.3975155279503104) internal successors, (547), 161 states have internal predecessors, (547), 0 states have call successors, (0), 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 184 [2024-11-27 20:31:49,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:49,176 INFO L225 Difference]: With dead ends: 350 [2024-11-27 20:31:49,176 INFO L226 Difference]: Without dead ends: 243 [2024-11-27 20:31:49,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13025 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=2132, Invalid=34158, Unknown=0, NotChecked=0, Total=36290 [2024-11-27 20:31:49,177 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 127 mSDsluCounter, 4238 mSDsCounter, 0 mSdLazyCounter, 10290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 4296 SdHoareTripleChecker+Invalid, 10290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:31:49,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 4296 Invalid, 10290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10290 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-27 20:31:49,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-27 20:31:49,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-11-27 20:31:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.0867768595041323) internal successors, (263), 242 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 263 transitions. [2024-11-27 20:31:49,254 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 263 transitions. Word has length 184 [2024-11-27 20:31:49,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:49,254 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 263 transitions. [2024-11-27 20:31:49,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 3.3975155279503104) internal successors, (547), 161 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:31:49,254 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 263 transitions. [2024-11-27 20:31:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-27 20:31:49,255 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:49,255 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 27, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1] [2024-11-27 20:31:49,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-27 20:31:49,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-27 20:31:49,455 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:49,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:49,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1265484054, now seen corresponding path program 48 times [2024-11-27 20:31:49,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:49,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990144711] [2024-11-27 20:31:49,456 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:31:49,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:31:49,679 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-11-27 20:31:49,679 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:31:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2310 backedges. 0 proven. 2310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:31:52,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:31:52,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990144711] [2024-11-27 20:31:52,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990144711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:31:52,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332297957] [2024-11-27 20:31:52,964 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:31:52,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:52,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:31:52,966 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:31:52,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-27 20:32:02,050 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-11-27 20:32:02,050 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:02,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 146 conjuncts are in the unsatisfiable core [2024-11-27 20:32:02,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:02,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:32:02,470 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 20:32:02,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-27 20:32:04,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-27 20:32:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2310 backedges. 0 proven. 2310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:32:04,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:07,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:32:07,916 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 118 treesize of output 110 [2024-11-27 20:32:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2310 backedges. 0 proven. 2310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:32:10,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332297957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:32:10,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:32:10,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 57, 57] total 138 [2024-11-27 20:32:10,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602021688] [2024-11-27 20:32:10,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:10,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2024-11-27 20:32:10,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:10,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2024-11-27 20:32:10,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=18465, Unknown=0, NotChecked=0, Total=18906 [2024-11-27 20:32:10,907 INFO L87 Difference]: Start difference. First operand 243 states and 263 transitions. Second operand has 138 states, 138 states have (on average 3.4565217391304346) internal successors, (477), 138 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:18,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:18,469 INFO L93 Difference]: Finished difference Result 250 states and 270 transitions. [2024-11-27 20:32:18,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-27 20:32:18,470 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 3.4565217391304346) internal successors, (477), 138 states have internal predecessors, (477), 0 states have call successors, (0), 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 187 [2024-11-27 20:32:18,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:18,471 INFO L225 Difference]: With dead ends: 250 [2024-11-27 20:32:18,471 INFO L226 Difference]: Without dead ends: 248 [2024-11-27 20:32:18,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4609 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=716, Invalid=26344, Unknown=0, NotChecked=0, Total=27060 [2024-11-27 20:32:18,472 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 123 mSDsluCounter, 4424 mSDsCounter, 0 mSdLazyCounter, 11259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 4480 SdHoareTripleChecker+Invalid, 11260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:18,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 4480 Invalid, 11260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11259 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-27 20:32:18,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-27 20:32:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 247. [2024-11-27 20:32:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.0853658536585367) internal successors, (267), 246 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:18,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 267 transitions. [2024-11-27 20:32:18,590 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 267 transitions. Word has length 187 [2024-11-27 20:32:18,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:18,590 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 267 transitions. [2024-11-27 20:32:18,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 3.4565217391304346) internal successors, (477), 138 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:18,590 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 267 transitions. [2024-11-27 20:32:18,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 20:32:18,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:18,592 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 27, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:18,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-27 20:32:18,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:18,792 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:18,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:18,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1694488272, now seen corresponding path program 49 times [2024-11-27 20:32:18,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:18,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127994086] [2024-11-27 20:32:18,793 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:32:18,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2409 backedges. 0 proven. 2409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:32:22,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:22,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127994086] [2024-11-27 20:32:22,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127994086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:22,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642292154] [2024-11-27 20:32:22,664 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:32:22,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:22,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:22,666 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:22,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-27 20:32:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:23,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-27 20:32:23,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:25,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:32:28,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:32:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2409 backedges. 0 proven. 2409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:32:29,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:32,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-27 20:32:32,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-27 20:32:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2409 backedges. 0 proven. 2409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:32:36,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642292154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:32:36,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:32:36,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 166 [2024-11-27 20:32:36,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590064273] [2024-11-27 20:32:36,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:36,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 166 states [2024-11-27 20:32:36,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:36,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2024-11-27 20:32:36,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=26819, Unknown=0, NotChecked=0, Total=27390 [2024-11-27 20:32:36,108 INFO L87 Difference]: Start difference. First operand 247 states and 267 transitions. Second operand has 166 states, 166 states have (on average 3.4216867469879517) internal successors, (568), 166 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:43,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:43,610 INFO L93 Difference]: Finished difference Result 360 states and 380 transitions. [2024-11-27 20:32:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-27 20:32:43,610 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 166 states have (on average 3.4216867469879517) internal successors, (568), 166 states have internal predecessors, (568), 0 states have call successors, (0), 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 191 [2024-11-27 20:32:43,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:43,611 INFO L225 Difference]: With dead ends: 360 [2024-11-27 20:32:43,611 INFO L226 Difference]: Without dead ends: 358 [2024-11-27 20:32:43,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6046 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=586, Invalid=27470, Unknown=0, NotChecked=0, Total=28056 [2024-11-27 20:32:43,612 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 20 mSDsluCounter, 6169 mSDsCounter, 0 mSdLazyCounter, 14110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 6232 SdHoareTripleChecker+Invalid, 14110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:43,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 6232 Invalid, 14110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14110 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-27 20:32:43,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-27 20:32:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 252. [2024-11-27 20:32:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.0836653386454183) internal successors, (272), 251 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 272 transitions. [2024-11-27 20:32:43,709 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 272 transitions. Word has length 191 [2024-11-27 20:32:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:43,710 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 272 transitions. [2024-11-27 20:32:43,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 166 states have (on average 3.4216867469879517) internal successors, (568), 166 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 272 transitions. [2024-11-27 20:32:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-27 20:32:43,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:43,711 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 28, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:43,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-27 20:32:43,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:43,912 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:43,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:43,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1854791017, now seen corresponding path program 50 times [2024-11-27 20:32:43,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:43,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250348030] [2024-11-27 20:32:43,912 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:32:43,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:44,024 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:32:44,024 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2493 backedges. 0 proven. 2493 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:32:47,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:47,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250348030] [2024-11-27 20:32:47,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250348030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:47,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125707680] [2024-11-27 20:32:47,829 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:32:47,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:47,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:47,831 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:47,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-27 20:32:48,387 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:32:48,387 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:48,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-27 20:32:48,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:51,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:32:51,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:32:51,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:32:54,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:32:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2493 backedges. 0 proven. 2493 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:32:54,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:58,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:32:58,537 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 54 treesize of output 50 [2024-11-27 20:33:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2493 backedges. 0 proven. 2493 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:02,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125707680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:33:02,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:33:02,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 169 [2024-11-27 20:33:02,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116424512] [2024-11-27 20:33:02,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:33:02,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 169 states [2024-11-27 20:33:02,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:02,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2024-11-27 20:33:02,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=27806, Unknown=0, NotChecked=0, Total=28392 [2024-11-27 20:33:02,114 INFO L87 Difference]: Start difference. First operand 252 states and 272 transitions. Second operand has 169 states, 169 states have (on average 3.4142011834319526) internal successors, (577), 169 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:12,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:33:12,089 INFO L93 Difference]: Finished difference Result 358 states and 378 transitions. [2024-11-27 20:33:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-27 20:33:12,089 INFO L78 Accepts]: Start accepts. Automaton has has 169 states, 169 states have (on average 3.4142011834319526) internal successors, (577), 169 states have internal predecessors, (577), 0 states have call successors, (0), 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 194 [2024-11-27 20:33:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:33:12,091 INFO L225 Difference]: With dead ends: 358 [2024-11-27 20:33:12,091 INFO L226 Difference]: Without dead ends: 356 [2024-11-27 20:33:12,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8297 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=891, Invalid=37721, Unknown=0, NotChecked=0, Total=38612 [2024-11-27 20:33:12,094 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 238 mSDsluCounter, 5632 mSDsCounter, 0 mSdLazyCounter, 13874 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 5691 SdHoareTripleChecker+Invalid, 13876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:33:12,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 5691 Invalid, 13876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13874 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-27 20:33:12,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-27 20:33:12,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 251. [2024-11-27 20:33:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.084) internal successors, (271), 250 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 271 transitions. [2024-11-27 20:33:12,286 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 271 transitions. Word has length 194 [2024-11-27 20:33:12,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:33:12,286 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 271 transitions. [2024-11-27 20:33:12,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 169 states, 169 states have (on average 3.4142011834319526) internal successors, (577), 169 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:12,286 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 271 transitions. [2024-11-27 20:33:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-27 20:33:12,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:33:12,287 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 26, 26, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:12,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-11-27 20:33:12,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-27 20:33:12,489 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:33:12,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1749254262, now seen corresponding path program 51 times [2024-11-27 20:33:12,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:12,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716768610] [2024-11-27 20:33:12,490 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:33:12,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:12,628 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2024-11-27 20:33:12,628 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 1277 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:14,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716768610] [2024-11-27 20:33:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716768610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:14,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651379488] [2024-11-27 20:33:14,581 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:33:14,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:14,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:14,583 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:14,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-27 20:33:32,810 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2024-11-27 20:33:32,810 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:32,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-27 20:33:32,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:33:34,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 1378 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:34,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:33:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 1378 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:36,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651379488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:33:36,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:33:36,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 86 [2024-11-27 20:33:36,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059278883] [2024-11-27 20:33:36,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:33:36,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-27 20:33:36,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:36,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-27 20:33:36,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1685, Invalid=5625, Unknown=0, NotChecked=0, Total=7310 [2024-11-27 20:33:36,289 INFO L87 Difference]: Start difference. First operand 251 states and 271 transitions. Second operand has 86 states, 86 states have (on average 3.604651162790698) internal successors, (310), 86 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:37,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:33:37,195 INFO L93 Difference]: Finished difference Result 363 states and 383 transitions. [2024-11-27 20:33:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-27 20:33:37,196 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.604651162790698) internal successors, (310), 86 states have internal predecessors, (310), 0 states have call successors, (0), 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 195 [2024-11-27 20:33:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:33:37,198 INFO L225 Difference]: With dead ends: 363 [2024-11-27 20:33:37,198 INFO L226 Difference]: Without dead ends: 251 [2024-11-27 20:33:37,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 308 SyntacticMatches, 53 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4761 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1685, Invalid=5625, Unknown=0, NotChecked=0, Total=7310 [2024-11-27 20:33:37,199 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:33:37,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:33:37,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-27 20:33:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2024-11-27 20:33:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.08) internal successors, (270), 250 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:37,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 270 transitions. [2024-11-27 20:33:37,343 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 270 transitions. Word has length 195 [2024-11-27 20:33:37,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:33:37,343 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 270 transitions. [2024-11-27 20:33:37,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.604651162790698) internal successors, (310), 86 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 270 transitions. [2024-11-27 20:33:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-27 20:33:37,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:33:37,344 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 28, 27, 27, 26, 26, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:37,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-11-27 20:33:37,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-27 20:33:37,544 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:33:37,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:37,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1728417745, now seen corresponding path program 52 times [2024-11-27 20:33:37,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:37,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624332276] [2024-11-27 20:33:37,545 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:33:37,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:37,657 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:33:37,657 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2596 backedges. 0 proven. 2596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:41,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:41,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624332276] [2024-11-27 20:33:41,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624332276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:41,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135894396] [2024-11-27 20:33:41,796 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:33:41,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:41,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:41,798 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:41,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-27 20:34:07,147 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:34:07,147 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:07,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-27 20:34:07,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:09,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:34:14,909 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:34:14,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:34:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2596 backedges. 1326 proven. 1270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:15,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:21,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:34:21,593 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 26 treesize of output 20 [2024-11-27 20:34:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2596 backedges. 1300 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:26,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135894396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:26,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:26,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 175 [2024-11-27 20:34:26,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332877950] [2024-11-27 20:34:26,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:26,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-11-27 20:34:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:26,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-11-27 20:34:26,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4381, Invalid=26069, Unknown=0, NotChecked=0, Total=30450 [2024-11-27 20:34:26,594 INFO L87 Difference]: Start difference. First operand 251 states and 270 transitions. Second operand has 175 states, 175 states have (on average 3.3657142857142857) internal successors, (589), 175 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:31,357 INFO L93 Difference]: Finished difference Result 362 states and 381 transitions. [2024-11-27 20:34:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-27 20:34:31,358 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 175 states have (on average 3.3657142857142857) internal successors, (589), 175 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2024-11-27 20:34:31,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:31,359 INFO L225 Difference]: With dead ends: 362 [2024-11-27 20:34:31,359 INFO L226 Difference]: Without dead ends: 251 [2024-11-27 20:34:31,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11194 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=4736, Invalid=27484, Unknown=0, NotChecked=0, Total=32220 [2024-11-27 20:34:31,361 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 5 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 5353 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 5353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:31,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2371 Invalid, 5353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5353 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-27 20:34:31,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-27 20:34:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2024-11-27 20:34:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.076) internal successors, (269), 250 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 269 transitions. [2024-11-27 20:34:31,515 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 269 transitions. Word has length 198 [2024-11-27 20:34:31,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:31,516 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 269 transitions. [2024-11-27 20:34:31,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 175 states have (on average 3.3657142857142857) internal successors, (589), 175 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:31,516 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 269 transitions. [2024-11-27 20:34:31,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-27 20:34:31,517 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:31,518 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 27, 27, 26, 26, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:31,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-27 20:34:31,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:31,718 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:31,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1854064170, now seen corresponding path program 53 times [2024-11-27 20:34:31,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:31,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585379823] [2024-11-27 20:34:31,719 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:34:31,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:32,033 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-11-27 20:34:32,033 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2683 backedges. 0 proven. 2683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:36,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585379823] [2024-11-27 20:34:36,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585379823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054311120] [2024-11-27 20:34:36,337 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:34:36,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:36,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:36,339 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:36,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-27 20:34:46,124 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-11-27 20:34:46,124 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:46,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 158 conjuncts are in the unsatisfiable core [2024-11-27 20:34:46,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:49,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:34:49,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:34:49,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:34:53,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:34:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2683 backedges. 0 proven. 2683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:53,251 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:57,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:34:57,453 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 118 treesize of output 110 [2024-11-27 20:35:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2683 backedges. 0 proven. 2683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:35:01,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054311120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:35:01,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:35:01,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 61, 61] total 177 [2024-11-27 20:35:01,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748722764] [2024-11-27 20:35:01,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:35:01,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2024-11-27 20:35:01,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:01,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2024-11-27 20:35:01,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=620, Invalid=30532, Unknown=0, NotChecked=0, Total=31152 [2024-11-27 20:35:01,499 INFO L87 Difference]: Start difference. First operand 251 states and 269 transitions. Second operand has 177 states, 177 states have (on average 3.378531073446328) internal successors, (598), 177 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:11,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:35:11,964 INFO L93 Difference]: Finished difference Result 258 states and 276 transitions. [2024-11-27 20:35:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-27 20:35:11,965 INFO L78 Accepts]: Start accepts. Automaton has has 177 states, 177 states have (on average 3.378531073446328) internal successors, (598), 177 states have internal predecessors, (598), 0 states have call successors, (0), 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 201 [2024-11-27 20:35:11,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:35:11,966 INFO L225 Difference]: With dead ends: 258 [2024-11-27 20:35:11,966 INFO L226 Difference]: Without dead ends: 256 [2024-11-27 20:35:11,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9127 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=946, Invalid=41284, Unknown=0, NotChecked=0, Total=42230 [2024-11-27 20:35:11,968 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 258 mSDsluCounter, 5859 mSDsCounter, 0 mSdLazyCounter, 14770 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 5919 SdHoareTripleChecker+Invalid, 14772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:35:11,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 5919 Invalid, 14772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14770 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-27 20:35:11,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-27 20:35:12,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 255. [2024-11-27 20:35:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.0748031496062993) internal successors, (273), 254 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:12,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 273 transitions. [2024-11-27 20:35:12,096 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 273 transitions. Word has length 201 [2024-11-27 20:35:12,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:35:12,096 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 273 transitions. [2024-11-27 20:35:12,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 177 states, 177 states have (on average 3.378531073446328) internal successors, (598), 177 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:12,097 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 273 transitions. [2024-11-27 20:35:12,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-27 20:35:12,098 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:35:12,098 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1] [2024-11-27 20:35:12,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-11-27 20:35:12,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:12,298 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:35:12,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:12,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1025782244, now seen corresponding path program 54 times [2024-11-27 20:35:12,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:12,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646981170] [2024-11-27 20:35:12,299 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:35:12,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:12,557 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2024-11-27 20:35:12,557 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 1300 proven. 1490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:35:17,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:17,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646981170] [2024-11-27 20:35:17,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646981170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:17,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66090601] [2024-11-27 20:35:17,703 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:35:17,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:17,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:35:17,705 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:35:17,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-27 20:35:29,106 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2024-11-27 20:35:29,106 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:29,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-27 20:35:29,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:35:31,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:35:37,773 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:35:37,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:35:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 1431 proven. 1359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:35:37,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:35:43,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:35:43,899 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 26 treesize of output 20 [2024-11-27 20:35:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 1404 proven. 1386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:35:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66090601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:35:48,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:35:48,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 180 [2024-11-27 20:35:48,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442629272] [2024-11-27 20:35:48,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:35:48,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2024-11-27 20:35:48,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:48,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2024-11-27 20:35:48,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4147, Invalid=28073, Unknown=0, NotChecked=0, Total=32220 [2024-11-27 20:35:48,977 INFO L87 Difference]: Start difference. First operand 255 states and 273 transitions. Second operand has 180 states, 180 states have (on average 3.3777777777777778) internal successors, (608), 180 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:35:52,004 INFO L93 Difference]: Finished difference Result 370 states and 388 transitions. [2024-11-27 20:35:52,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-27 20:35:52,004 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 180 states have (on average 3.3777777777777778) internal successors, (608), 180 states have internal predecessors, (608), 0 states have call successors, (0), 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 205 [2024-11-27 20:35:52,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:35:52,006 INFO L225 Difference]: With dead ends: 370 [2024-11-27 20:35:52,006 INFO L226 Difference]: Without dead ends: 255 [2024-11-27 20:35:52,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10679 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=4340, Invalid=28966, Unknown=0, NotChecked=0, Total=33306 [2024-11-27 20:35:52,007 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 5 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 3315 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:35:52,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1505 Invalid, 3315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3315 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 20:35:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-27 20:35:52,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-11-27 20:35:52,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.0708661417322836) internal successors, (272), 254 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 272 transitions. [2024-11-27 20:35:52,159 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 272 transitions. Word has length 205 [2024-11-27 20:35:52,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:35:52,159 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 272 transitions. [2024-11-27 20:35:52,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 180 states have (on average 3.3777777777777778) internal successors, (608), 180 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:52,160 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 272 transitions. [2024-11-27 20:35:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-27 20:35:52,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:35:52,160 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 30, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1] [2024-11-27 20:35:52,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-11-27 20:35:52,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:52,361 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:35:52,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:52,362 INFO L85 PathProgramCache]: Analyzing trace with hash 607726229, now seen corresponding path program 55 times [2024-11-27 20:35:52,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:52,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224640461] [2024-11-27 20:35:52,362 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:35:52,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:35:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:35:56,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:56,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224640461] [2024-11-27 20:35:56,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224640461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:56,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440638741] [2024-11-27 20:35:56,788 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:35:56,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:56,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:35:56,790 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:35:56,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-27 20:35:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:35:57,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 155 conjuncts are in the unsatisfiable core [2024-11-27 20:35:57,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:36:00,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:36:00,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:36:00,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-27 20:36:04,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:36:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:04,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:36:09,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 20:36:09,268 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 118 treesize of output 110 [2024-11-27 20:36:13,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:13,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440638741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:36:13,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:36:13,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 181 [2024-11-27 20:36:13,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752706974] [2024-11-27 20:36:13,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:36:13,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 181 states [2024-11-27 20:36:13,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:13,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2024-11-27 20:36:13,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=31952, Unknown=0, NotChecked=0, Total=32580 [2024-11-27 20:36:13,764 INFO L87 Difference]: Start difference. First operand 255 states and 272 transitions. Second operand has 181 states, 181 states have (on average 3.4198895027624308) internal successors, (619), 181 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:36:24,965 INFO L93 Difference]: Finished difference Result 262 states and 279 transitions. [2024-11-27 20:36:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-27 20:36:24,966 INFO L78 Accepts]: Start accepts. Automaton has has 181 states, 181 states have (on average 3.4198895027624308) internal successors, (619), 181 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2024-11-27 20:36:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:36:24,967 INFO L225 Difference]: With dead ends: 262 [2024-11-27 20:36:24,967 INFO L226 Difference]: Without dead ends: 260 [2024-11-27 20:36:24,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9520 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=955, Invalid=43355, Unknown=0, NotChecked=0, Total=44310 [2024-11-27 20:36:24,968 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 256 mSDsluCounter, 6095 mSDsCounter, 0 mSdLazyCounter, 14874 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 6158 SdHoareTripleChecker+Invalid, 14876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:36:24,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 6158 Invalid, 14876 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 14874 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-27 20:36:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-27 20:36:25,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2024-11-27 20:36:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.069767441860465) internal successors, (276), 258 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 276 transitions. [2024-11-27 20:36:25,119 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 276 transitions. Word has length 208 [2024-11-27 20:36:25,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:36:25,120 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 276 transitions. [2024-11-27 20:36:25,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 181 states, 181 states have (on average 3.4198895027624308) internal successors, (619), 181 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 276 transitions. [2024-11-27 20:36:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-27 20:36:25,121 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:36:25,121 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 30, 29, 29, 28, 28, 1, 1, 1, 1, 1, 1] [2024-11-27 20:36:25,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2024-11-27 20:36:25,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:25,322 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:36:25,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:25,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1063041189, now seen corresponding path program 56 times [2024-11-27 20:36:25,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:25,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438407568] [2024-11-27 20:36:25,322 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:36:25,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:25,404 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:36:25,404 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:36:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2991 backedges. 1404 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:30,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:30,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438407568] [2024-11-27 20:36:30,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438407568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:36:30,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76131837] [2024-11-27 20:36:30,707 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:36:30,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:30,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:36:30,709 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:36:30,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-27 20:36:31,403 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:36:31,403 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:36:31,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-27 20:36:31,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:36:33,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:36:40,536 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 20:36:40,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-27 20:36:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2991 backedges. 1540 proven. 1451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:40,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:36:45,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-27 20:36:45,887 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 26 treesize of output 20 [2024-11-27 20:36:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2991 backedges. 1512 proven. 1479 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:51,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76131837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:36:51,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:36:51,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 186 [2024-11-27 20:36:51,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192713145] [2024-11-27 20:36:51,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:36:51,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 186 states [2024-11-27 20:36:51,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:51,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2024-11-27 20:36:51,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4424, Invalid=29986, Unknown=0, NotChecked=0, Total=34410 [2024-11-27 20:36:51,252 INFO L87 Difference]: Start difference. First operand 259 states and 276 transitions. Second operand has 186 states, 186 states have (on average 3.381720430107527) internal successors, (629), 186 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:36:54,826 INFO L93 Difference]: Finished difference Result 378 states and 395 transitions. [2024-11-27 20:36:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-27 20:36:54,827 INFO L78 Accepts]: Start accepts. Automaton has has 186 states, 186 states have (on average 3.381720430107527) internal successors, (629), 186 states have internal predecessors, (629), 0 states have call successors, (0), 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 212 [2024-11-27 20:36:54,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:36:54,828 INFO L225 Difference]: With dead ends: 378 [2024-11-27 20:36:54,828 INFO L226 Difference]: Without dead ends: 259 [2024-11-27 20:36:54,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11408 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=4623, Invalid=30909, Unknown=0, NotChecked=0, Total=35532 [2024-11-27 20:36:54,830 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 7 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 4393 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:36:54,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1855 Invalid, 4393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4393 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-27 20:36:54,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-27 20:36:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2024-11-27 20:36:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.065891472868217) internal successors, (275), 258 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:55,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 275 transitions. [2024-11-27 20:36:55,040 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 275 transitions. Word has length 212 [2024-11-27 20:36:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:36:55,040 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 275 transitions. [2024-11-27 20:36:55,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 186 states, 186 states have (on average 3.381720430107527) internal successors, (629), 186 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:55,040 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 275 transitions. [2024-11-27 20:36:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 20:36:55,042 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:36:55,042 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 29, 29, 28, 28, 1, 1, 1, 1, 1, 1] [2024-11-27 20:36:55,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-11-27 20:36:55,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-11-27 20:36:55,243 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:36:55,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:55,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1842044734, now seen corresponding path program 57 times [2024-11-27 20:36:55,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:55,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355928851] [2024-11-27 20:36:55,244 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:36:55,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:55,456 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2024-11-27 20:36:55,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:36:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 0 proven. 3084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:59,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:59,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355928851] [2024-11-27 20:36:59,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355928851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:36:59,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751265552] [2024-11-27 20:36:59,781 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:36:59,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:59,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:36:59,783 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:36:59,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac005376-78e6-4f1a-ba61-c80985b21e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process