./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd --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 5bf92ba2f935aadbe2c0ae3d366f72b4144ff6b8b5ce7c503e628d249b478be5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:05:55,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:05:55,299 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:05:55,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:05:55,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:05:55,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:05:55,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:05:55,329 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:05:55,330 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:05:55,330 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:05:55,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:05:55,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:05:55,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:05:55,334 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:05:55,334 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:05:55,334 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:05:55,334 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:05:55,335 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:05:55,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:05:55,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:05:55,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:05:55,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:05:55,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:05:55,335 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:05:55,335 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:05:55,335 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:05:55,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:05:55,336 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:05:55,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:05:55,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:05:55,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:05:55,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:05:55,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:05:55,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:05:55,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:05:55,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:05:55,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:05:55,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:05:55,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:05:55,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:05:55,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:05:55,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:05:55,337 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_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 5bf92ba2f935aadbe2c0ae3d366f72b4144ff6b8b5ce7c503e628d249b478be5 [2024-11-13 14:05:55,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:05:55,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:05:55,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:05:55,712 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:05:55,713 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:05:55,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i Unable to find full path for "g++" [2024-11-13 14:05:57,639 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:05:57,931 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:05:57,932 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i [2024-11-13 14:05:57,950 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/data/f5dc4a128/63a6932ec3e04b4b819635185be024cc/FLAG44265afad [2024-11-13 14:05:57,971 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/data/f5dc4a128/63a6932ec3e04b4b819635185be024cc [2024-11-13 14:05:57,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:05:57,976 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:05:57,978 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:05:57,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:05:57,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:05:57,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:05:57" (1/1) ... [2024-11-13 14:05:57,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284df12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:57, skipping insertion in model container [2024-11-13 14:05:57,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:05:57" (1/1) ... [2024-11-13 14:05:58,028 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:05:58,443 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_57be17d5-0d36-4d5d-8e2a-c01165627000/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i[24494,24507] [2024-11-13 14:05:58,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:05:58,465 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:05:58,527 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_57be17d5-0d36-4d5d-8e2a-c01165627000/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i[24494,24507] [2024-11-13 14:05:58,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:05:58,565 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:05:58,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58 WrapperNode [2024-11-13 14:05:58,566 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:05:58,567 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:05:58,567 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:05:58,567 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:05:58,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (1/1) ... [2024-11-13 14:05:58,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (1/1) ... [2024-11-13 14:05:58,626 INFO L138 Inliner]: procedures = 129, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 126 [2024-11-13 14:05:58,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:05:58,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:05:58,628 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:05:58,628 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:05:58,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (1/1) ... [2024-11-13 14:05:58,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (1/1) ... [2024-11-13 14:05:58,642 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (1/1) ... [2024-11-13 14:05:58,670 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 5, 6]. 46 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 4 writes are split as follows [0, 1, 3]. [2024-11-13 14:05:58,670 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (1/1) ... [2024-11-13 14:05:58,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (1/1) ... [2024-11-13 14:05:58,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (1/1) ... [2024-11-13 14:05:58,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (1/1) ... [2024-11-13 14:05:58,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (1/1) ... [2024-11-13 14:05:58,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (1/1) ... [2024-11-13 14:05:58,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:05:58,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:05:58,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:05:58,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:05:58,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (1/1) ... [2024-11-13 14:05:58,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:05:58,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:05:58,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:05:58,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:05:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-13 14:05:58,779 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-13 14:05:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:05:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2024-11-13 14:05:58,780 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2024-11-13 14:05:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:05:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:05:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:05:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:05:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 14:05:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:05:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:05:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 14:05:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:05:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 14:05:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 14:05:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 14:05:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:05:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:05:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:05:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:05:58,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:05:58,955 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:05:58,957 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:05:58,984 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-13 14:05:59,226 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-11-13 14:05:59,226 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:05:59,237 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:05:59,237 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-13 14:05:59,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:05:59 BoogieIcfgContainer [2024-11-13 14:05:59,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:05:59,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:05:59,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:05:59,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:05:59,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:05:57" (1/3) ... [2024-11-13 14:05:59,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241bceba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:05:59, skipping insertion in model container [2024-11-13 14:05:59,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:05:58" (2/3) ... [2024-11-13 14:05:59,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241bceba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:05:59, skipping insertion in model container [2024-11-13 14:05:59,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:05:59" (3/3) ... [2024-11-13 14:05:59,248 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-2.i [2024-11-13 14:05:59,264 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:05:59,265 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll_nondet_insert-2.i that has 3 procedures, 46 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-13 14:05:59,321 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:05:59,337 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;@4b7e3e49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:05:59,337 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:05:59,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 39 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:05:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 14:05:59,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:05:59,351 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:05:59,351 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:05:59,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:05:59,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1285568980, now seen corresponding path program 1 times [2024-11-13 14:05:59,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:05:59,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046847736] [2024-11-13 14:05:59,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:05:59,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:05:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:05:59,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:05:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:05:59,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-13 14:05:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:05:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:05:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:05:59,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046847736] [2024-11-13 14:05:59,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046847736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:05:59,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:05:59,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:05:59,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845711651] [2024-11-13 14:05:59,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:05:59,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:05:59,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:05:59,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:05:59,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:05:59,630 INFO L87 Difference]: Start difference. First operand has 45 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 39 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:05:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:05:59,657 INFO L93 Difference]: Finished difference Result 87 states and 125 transitions. [2024-11-13 14:05:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:05:59,660 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-13 14:05:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:05:59,668 INFO L225 Difference]: With dead ends: 87 [2024-11-13 14:05:59,668 INFO L226 Difference]: Without dead ends: 36 [2024-11-13 14:05:59,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:05:59,676 INFO L432 NwaCegarLoop]: 56 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, 56 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 [2024-11-13 14:05:59,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:05:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-13 14:05:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-13 14:05:59,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:05:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2024-11-13 14:05:59,720 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2024-11-13 14:05:59,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:05:59,722 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2024-11-13 14:05:59,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:05:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2024-11-13 14:05:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 14:05:59,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:05:59,724 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:05:59,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:05:59,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:05:59,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:05:59,725 INFO L85 PathProgramCache]: Analyzing trace with hash 692151070, now seen corresponding path program 1 times [2024-11-13 14:05:59,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:05:59,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284131673] [2024-11-13 14:05:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:05:59,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:05:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:00,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:00,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 14:06:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:06:00,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:00,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284131673] [2024-11-13 14:06:00,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284131673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:00,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374386672] [2024-11-13 14:06:00,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:00,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:00,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:00,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:00,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:06:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:00,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:06:00,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:00,627 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:06:00,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374386672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:00,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:06:00,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-13 14:06:00,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951067724] [2024-11-13 14:06:00,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:00,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:06:00,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:00,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:06:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:06:00,631 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:06:00,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:00,714 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2024-11-13 14:06:00,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:06:00,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-13 14:06:00,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:00,716 INFO L225 Difference]: With dead ends: 66 [2024-11-13 14:06:00,716 INFO L226 Difference]: Without dead ends: 38 [2024-11-13 14:06:00,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:06:00,717 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:00,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 194 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:06:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-13 14:06:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-13 14:06:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:06:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-11-13 14:06:00,725 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 31 [2024-11-13 14:06:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:00,726 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-11-13 14:06:00,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:06:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-11-13 14:06:00,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 14:06:00,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:00,728 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:00,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:06:00,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:00,929 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:00,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:00,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1681955781, now seen corresponding path program 1 times [2024-11-13 14:06:00,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:00,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370154834] [2024-11-13 14:06:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:00,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:01,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:01,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 14:06:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:06:01,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:01,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370154834] [2024-11-13 14:06:01,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370154834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:01,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:06:01,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:06:01,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804129298] [2024-11-13 14:06:01,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:01,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:06:01,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:01,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:06:01,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:06:01,260 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:06:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:01,399 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2024-11-13 14:06:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:06:01,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-11-13 14:06:01,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:01,400 INFO L225 Difference]: With dead ends: 63 [2024-11-13 14:06:01,400 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 14:06:01,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:06:01,401 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 20 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:01,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 207 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:06:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 14:06:01,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2024-11-13 14:06:01,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:06:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2024-11-13 14:06:01,409 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 35 [2024-11-13 14:06:01,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:01,409 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2024-11-13 14:06:01,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:06:01,410 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2024-11-13 14:06:01,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:06:01,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:01,411 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:01,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:06:01,411 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:01,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:01,411 INFO L85 PathProgramCache]: Analyzing trace with hash 652676004, now seen corresponding path program 1 times [2024-11-13 14:06:01,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:01,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793204974] [2024-11-13 14:06:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:01,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:01,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:01,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 14:06:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:06:01,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793204974] [2024-11-13 14:06:01,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793204974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871970865] [2024-11-13 14:06:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:01,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:01,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:01,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:01,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:06:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:01,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 14:06:01,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:06:01,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:06:02,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871970865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:02,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:02,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2024-11-13 14:06:02,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232591146] [2024-11-13 14:06:02,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:02,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:06:02,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:02,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:06:02,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:06:02,266 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:06:02,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:02,613 INFO L93 Difference]: Finished difference Result 112 states and 144 transitions. [2024-11-13 14:06:02,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:06:02,616 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-11-13 14:06:02,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:02,619 INFO L225 Difference]: With dead ends: 112 [2024-11-13 14:06:02,621 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 14:06:02,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:06:02,624 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 25 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:02,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 443 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:06:02,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 14:06:02,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2024-11-13 14:06:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 states have internal predecessors, (58), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:06:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2024-11-13 14:06:02,644 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 36 [2024-11-13 14:06:02,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:02,645 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2024-11-13 14:06:02,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:06:02,646 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2024-11-13 14:06:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 14:06:02,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:02,647 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:02,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:06:02,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:02,851 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:02,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:02,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1616632995, now seen corresponding path program 2 times [2024-11-13 14:06:02,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:02,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124151905] [2024-11-13 14:06:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:02,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:03,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:03,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:06:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:06:03,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:03,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124151905] [2024-11-13 14:06:03,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124151905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:03,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463209968] [2024-11-13 14:06:03,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:06:03,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:03,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:03,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:03,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:06:03,330 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:06:03,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:06:03,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 14:06:03,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:03,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:06:03,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-13 14:06:03,786 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 16 treesize of output 8 [2024-11-13 14:06:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:03,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:03,827 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 17 [2024-11-13 14:06:03,836 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 13 [2024-11-13 14:06:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:06:03,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463209968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:03,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:03,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 15 [2024-11-13 14:06:03,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667882307] [2024-11-13 14:06:03,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:03,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:06:03,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:03,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:06:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:06:03,876 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:06:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:04,173 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2024-11-13 14:06:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:06:04,174 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 40 [2024-11-13 14:06:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:04,175 INFO L225 Difference]: With dead ends: 85 [2024-11-13 14:06:04,175 INFO L226 Difference]: Without dead ends: 80 [2024-11-13 14:06:04,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:06:04,177 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 56 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:04,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 432 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:06:04,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-13 14:06:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 65. [2024-11-13 14:06:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 58 states have internal predecessors, (70), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:06:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2024-11-13 14:06:04,188 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 40 [2024-11-13 14:06:04,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:04,188 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2024-11-13 14:06:04,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:06:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2024-11-13 14:06:04,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 14:06:04,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:04,190 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:04,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:06:04,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:04,390 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:04,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:04,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1475639052, now seen corresponding path program 3 times [2024-11-13 14:06:04,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:04,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071973048] [2024-11-13 14:06:04,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:04,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:04,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:04,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:06:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 14:06:04,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:04,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071973048] [2024-11-13 14:06:04,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071973048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:04,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165148209] [2024-11-13 14:06:04,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:06:04,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:04,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:04,941 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:04,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:06:05,070 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:06:05,070 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:06:05,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 14:06:05,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:06:05,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 14:06:05,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165148209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:05,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:05,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 15] total 26 [2024-11-13 14:06:05,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753840515] [2024-11-13 14:06:05,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:05,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 14:06:05,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:05,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 14:06:05,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:06:05,625 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 23 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:06:06,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:06,100 INFO L93 Difference]: Finished difference Result 175 states and 234 transitions. [2024-11-13 14:06:06,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 14:06:06,101 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 23 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2024-11-13 14:06:06,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:06,102 INFO L225 Difference]: With dead ends: 175 [2024-11-13 14:06:06,102 INFO L226 Difference]: Without dead ends: 170 [2024-11-13 14:06:06,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2024-11-13 14:06:06,104 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 67 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:06,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 607 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:06:06,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-13 14:06:06,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 121. [2024-11-13 14:06:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 107 states have (on average 1.2523364485981308) internal successors, (134), 110 states have internal predecessors, (134), 9 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-13 14:06:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 161 transitions. [2024-11-13 14:06:06,147 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 161 transitions. Word has length 41 [2024-11-13 14:06:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:06,147 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 161 transitions. [2024-11-13 14:06:06,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 23 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:06:06,148 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 161 transitions. [2024-11-13 14:06:06,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 14:06:06,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:06,152 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:06,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:06:06,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 14:06:06,356 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:06,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1448175299, now seen corresponding path program 4 times [2024-11-13 14:06:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640146702] [2024-11-13 14:06:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:07,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:07,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:06:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:06:07,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640146702] [2024-11-13 14:06:07,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640146702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706513575] [2024-11-13 14:06:07,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:06:07,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:07,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:07,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:07,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:06:07,291 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:06:07,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:06:07,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 14:06:07,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:07,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:06:07,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:06:07,366 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 11 treesize of output 7 [2024-11-13 14:06:07,429 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:06:07,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 14:06:07,503 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 23 treesize of output 22 [2024-11-13 14:06:07,514 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 15 [2024-11-13 14:06:08,006 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 65 treesize of output 41 [2024-11-13 14:06:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:08,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:08,213 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 72 treesize of output 52 [2024-11-13 14:06:08,216 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 56 treesize of output 36 [2024-11-13 14:06:12,331 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| Int)) (or (= (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| (store (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.base|)) |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|) 0) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0)))) (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| Int)) (or (= (select (select (store |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| (store (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|) 0) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0))))) is different from false [2024-11-13 14:06:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 4 not checked. [2024-11-13 14:06:12,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706513575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:12,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:12,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2024-11-13 14:06:12,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204639773] [2024-11-13 14:06:12,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:12,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 14:06:12,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:12,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 14:06:12,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=449, Unknown=1, NotChecked=42, Total=552 [2024-11-13 14:06:12,750 INFO L87 Difference]: Start difference. First operand 121 states and 161 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:06:25,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:25,705 INFO L93 Difference]: Finished difference Result 189 states and 245 transitions. [2024-11-13 14:06:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:06:25,705 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2024-11-13 14:06:25,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:25,707 INFO L225 Difference]: With dead ends: 189 [2024-11-13 14:06:25,707 INFO L226 Difference]: Without dead ends: 179 [2024-11-13 14:06:25,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=87, Invalid=618, Unknown=1, NotChecked=50, Total=756 [2024-11-13 14:06:25,709 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 52 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:25,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 569 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 284 Invalid, 0 Unknown, 54 Unchecked, 0.5s Time] [2024-11-13 14:06:25,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-13 14:06:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 158. [2024-11-13 14:06:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 138 states have (on average 1.2463768115942029) internal successors, (172), 144 states have internal predecessors, (172), 13 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (26), 10 states have call predecessors, (26), 13 states have call successors, (26) [2024-11-13 14:06:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 211 transitions. [2024-11-13 14:06:25,734 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 211 transitions. Word has length 42 [2024-11-13 14:06:25,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:25,734 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 211 transitions. [2024-11-13 14:06:25,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:06:25,735 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 211 transitions. [2024-11-13 14:06:25,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 14:06:25,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:25,737 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:25,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:06:25,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 14:06:25,938 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:25,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:25,938 INFO L85 PathProgramCache]: Analyzing trace with hash 726712377, now seen corresponding path program 1 times [2024-11-13 14:06:25,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:25,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576666197] [2024-11-13 14:06:25,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:25,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:26,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:26,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:06:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:06:26,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576666197] [2024-11-13 14:06:26,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576666197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177650976] [2024-11-13 14:06:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:26,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:26,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:26,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:26,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:06:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:26,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:06:26,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:06:27,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:06:27,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177650976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:27,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:27,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2024-11-13 14:06:27,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691151699] [2024-11-13 14:06:27,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:27,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 14:06:27,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:27,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 14:06:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:06:27,907 INFO L87 Difference]: Start difference. First operand 158 states and 211 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 22 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 14:06:28,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:28,817 INFO L93 Difference]: Finished difference Result 309 states and 426 transitions. [2024-11-13 14:06:28,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:06:28,818 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 22 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2024-11-13 14:06:28,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:28,821 INFO L225 Difference]: With dead ends: 309 [2024-11-13 14:06:28,821 INFO L226 Difference]: Without dead ends: 229 [2024-11-13 14:06:28,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:06:28,823 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 112 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:28,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 514 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:06:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-13 14:06:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 182. [2024-11-13 14:06:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 159 states have (on average 1.2767295597484276) internal successors, (203), 167 states have internal predecessors, (203), 13 states have call successors, (13), 4 states have call predecessors, (13), 9 states have return successors, (32), 10 states have call predecessors, (32), 13 states have call successors, (32) [2024-11-13 14:06:28,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 248 transitions. [2024-11-13 14:06:28,866 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 248 transitions. Word has length 44 [2024-11-13 14:06:28,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:28,866 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 248 transitions. [2024-11-13 14:06:28,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 22 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 14:06:28,867 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 248 transitions. [2024-11-13 14:06:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 14:06:28,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:28,868 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:28,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:06:29,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 14:06:29,069 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:29,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:29,070 INFO L85 PathProgramCache]: Analyzing trace with hash -553151301, now seen corresponding path program 1 times [2024-11-13 14:06:29,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:29,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327765408] [2024-11-13 14:06:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:29,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:29,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:29,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:06:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:06:29,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:29,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327765408] [2024-11-13 14:06:29,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327765408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:29,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227609171] [2024-11-13 14:06:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:29,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:29,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:29,457 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:29,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:06:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:29,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:06:29,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:06:29,767 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:06:29,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227609171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:29,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:06:29,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2024-11-13 14:06:29,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269299958] [2024-11-13 14:06:29,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:29,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:06:29,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:29,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:06:29,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:06:29,768 INFO L87 Difference]: Start difference. First operand 182 states and 248 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:06:29,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:29,955 INFO L93 Difference]: Finished difference Result 214 states and 294 transitions. [2024-11-13 14:06:29,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:06:29,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2024-11-13 14:06:29,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:29,958 INFO L225 Difference]: With dead ends: 214 [2024-11-13 14:06:29,958 INFO L226 Difference]: Without dead ends: 201 [2024-11-13 14:06:29,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:06:29,959 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 13 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:29,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 238 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:06:29,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-13 14:06:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 186. [2024-11-13 14:06:29,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 163 states have (on average 1.2699386503067485) internal successors, (207), 169 states have internal predecessors, (207), 13 states have call successors, (13), 4 states have call predecessors, (13), 9 states have return successors, (32), 12 states have call predecessors, (32), 13 states have call successors, (32) [2024-11-13 14:06:29,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 252 transitions. [2024-11-13 14:06:29,992 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 252 transitions. Word has length 44 [2024-11-13 14:06:29,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:29,992 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 252 transitions. [2024-11-13 14:06:29,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:06:29,993 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 252 transitions. [2024-11-13 14:06:29,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 14:06:29,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:29,994 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:30,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 14:06:30,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:30,198 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:30,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:30,199 INFO L85 PathProgramCache]: Analyzing trace with hash -792866307, now seen corresponding path program 2 times [2024-11-13 14:06:30,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:30,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884625281] [2024-11-13 14:06:30,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:30,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:30,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:30,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 14:06:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:06:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:30,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884625281] [2024-11-13 14:06:30,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884625281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:30,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439927066] [2024-11-13 14:06:30,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:06:30,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:30,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:30,566 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:30,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:06:30,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:06:30,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:06:30,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 14:06:30,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:06:30,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:06:31,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439927066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:31,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:31,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 18 [2024-11-13 14:06:31,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317636220] [2024-11-13 14:06:31,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:31,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:06:31,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:31,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:06:31,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:06:31,223 INFO L87 Difference]: Start difference. First operand 186 states and 252 transitions. Second operand has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 17 states have internal predecessors, (66), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:06:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:31,585 INFO L93 Difference]: Finished difference Result 262 states and 355 transitions. [2024-11-13 14:06:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:06:31,586 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 17 states have internal predecessors, (66), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2024-11-13 14:06:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:31,587 INFO L225 Difference]: With dead ends: 262 [2024-11-13 14:06:31,587 INFO L226 Difference]: Without dead ends: 185 [2024-11-13 14:06:31,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:06:31,592 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 29 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:31,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 377 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:06:31,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-13 14:06:31,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 177. [2024-11-13 14:06:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 155 states have (on average 1.270967741935484) internal successors, (197), 161 states have internal predecessors, (197), 12 states have call successors, (12), 4 states have call predecessors, (12), 9 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2024-11-13 14:06:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 238 transitions. [2024-11-13 14:06:31,630 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 238 transitions. Word has length 44 [2024-11-13 14:06:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:31,630 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 238 transitions. [2024-11-13 14:06:31,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 17 states have internal predecessors, (66), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:06:31,631 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 238 transitions. [2024-11-13 14:06:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 14:06:31,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:31,633 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:31,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 14:06:31,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 14:06:31,837 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:31,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:31,838 INFO L85 PathProgramCache]: Analyzing trace with hash -899726794, now seen corresponding path program 5 times [2024-11-13 14:06:31,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:31,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350501971] [2024-11-13 14:06:31,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:31,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:32,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:32,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 14:06:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:06:32,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:32,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350501971] [2024-11-13 14:06:32,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350501971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:32,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114894058] [2024-11-13 14:06:32,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:06:32,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:32,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:32,145 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:32,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:06:32,301 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-13 14:06:32,301 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:06:32,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:06:32,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:06:32,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:32,684 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:06:32,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114894058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:32,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:32,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 16 [2024-11-13 14:06:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657988462] [2024-11-13 14:06:32,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:32,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 14:06:32,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 14:06:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:06:32,686 INFO L87 Difference]: Start difference. First operand 177 states and 238 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:06:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:33,012 INFO L93 Difference]: Finished difference Result 279 states and 379 transitions. [2024-11-13 14:06:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:06:33,013 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2024-11-13 14:06:33,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:33,014 INFO L225 Difference]: With dead ends: 279 [2024-11-13 14:06:33,014 INFO L226 Difference]: Without dead ends: 173 [2024-11-13 14:06:33,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:06:33,016 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 17 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:33,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 417 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:06:33,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-13 14:06:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 158. [2024-11-13 14:06:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.2589928057553956) internal successors, (175), 143 states have internal predecessors, (175), 10 states have call successors, (10), 4 states have call predecessors, (10), 8 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2024-11-13 14:06:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 207 transitions. [2024-11-13 14:06:33,046 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 207 transitions. Word has length 46 [2024-11-13 14:06:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:33,046 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 207 transitions. [2024-11-13 14:06:33,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:06:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 207 transitions. [2024-11-13 14:06:33,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:06:33,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:33,048 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:33,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:06:33,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:33,251 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:33,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:33,252 INFO L85 PathProgramCache]: Analyzing trace with hash 911132004, now seen corresponding path program 3 times [2024-11-13 14:06:33,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:33,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756000395] [2024-11-13 14:06:33,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:33,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:33,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:33,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 14:06:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 14:06:33,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:33,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756000395] [2024-11-13 14:06:33,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756000395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:33,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317023811] [2024-11-13 14:06:33,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:06:33,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:33,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:33,839 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:33,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:06:33,991 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 14:06:33,991 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:06:33,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 14:06:33,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:34,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:06:34,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:06:34,102 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:06:34,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 14:06:34,185 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 32 treesize of output 20 [2024-11-13 14:06:34,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:06:34,691 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 48 treesize of output 28 [2024-11-13 14:06:34,761 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 24 treesize of output 16 [2024-11-13 14:06:34,847 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-13 14:06:34,847 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2024-11-13 14:06:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:06:34,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:34,894 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 41 treesize of output 29 [2024-11-13 14:06:34,899 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 33 treesize of output 21 [2024-11-13 14:06:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 14:06:35,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317023811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:35,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:35,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 23 [2024-11-13 14:06:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147024943] [2024-11-13 14:06:35,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:35,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:06:35,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:35,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:06:35,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:06:35,194 INFO L87 Difference]: Start difference. First operand 158 states and 207 transitions. Second operand has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:06:36,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:36,094 INFO L93 Difference]: Finished difference Result 179 states and 229 transitions. [2024-11-13 14:06:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:06:36,094 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2024-11-13 14:06:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:36,096 INFO L225 Difference]: With dead ends: 179 [2024-11-13 14:06:36,096 INFO L226 Difference]: Without dead ends: 174 [2024-11-13 14:06:36,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2024-11-13 14:06:36,097 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 65 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:36,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 712 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:06:36,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-13 14:06:36,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 159. [2024-11-13 14:06:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 140 states have (on average 1.2571428571428571) internal successors, (176), 144 states have internal predecessors, (176), 10 states have call successors, (10), 4 states have call predecessors, (10), 8 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2024-11-13 14:06:36,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 208 transitions. [2024-11-13 14:06:36,125 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 208 transitions. Word has length 48 [2024-11-13 14:06:36,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:36,125 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 208 transitions. [2024-11-13 14:06:36,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:06:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 208 transitions. [2024-11-13 14:06:36,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 14:06:36,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:36,126 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:36,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:06:36,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:36,327 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:36,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:36,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1768024603, now seen corresponding path program 4 times [2024-11-13 14:06:36,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:36,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219926092] [2024-11-13 14:06:36,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:36,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:36,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:36,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 14:06:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 14:06:37,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:37,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219926092] [2024-11-13 14:06:37,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219926092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:37,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679088947] [2024-11-13 14:06:37,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:06:37,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:37,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:37,084 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:37,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:06:37,240 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:06:37,241 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:06:37,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 14:06:37,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:37,886 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 14:06:37,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 14:06:38,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679088947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:38,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:38,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 36 [2024-11-13 14:06:38,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589390629] [2024-11-13 14:06:38,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:38,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 14:06:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:38,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 14:06:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1144, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 14:06:38,724 INFO L87 Difference]: Start difference. First operand 159 states and 208 transitions. Second operand has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 33 states have internal predecessors, (74), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:06:40,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:40,598 INFO L93 Difference]: Finished difference Result 287 states and 398 transitions. [2024-11-13 14:06:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 14:06:40,599 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 33 states have internal predecessors, (74), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-13 14:06:40,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:40,601 INFO L225 Difference]: With dead ends: 287 [2024-11-13 14:06:40,603 INFO L226 Difference]: Without dead ends: 282 [2024-11-13 14:06:40,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 14:06:40,605 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 112 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:40,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1690 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 14:06:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-13 14:06:40,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 209. [2024-11-13 14:06:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 185 states have (on average 1.2432432432432432) internal successors, (230), 190 states have internal predecessors, (230), 14 states have call successors, (14), 4 states have call predecessors, (14), 9 states have return successors, (25), 14 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-13 14:06:40,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 269 transitions. [2024-11-13 14:06:40,639 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 269 transitions. Word has length 49 [2024-11-13 14:06:40,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:40,640 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 269 transitions. [2024-11-13 14:06:40,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 33 states have internal predecessors, (74), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:06:40,640 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 269 transitions. [2024-11-13 14:06:40,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 14:06:40,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:40,641 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:40,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 14:06:40,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 14:06:40,842 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:40,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1077466500, now seen corresponding path program 5 times [2024-11-13 14:06:40,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:40,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485379669] [2024-11-13 14:06:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:40,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:42,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:06:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:42,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 14:06:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 14:06:42,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:42,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485379669] [2024-11-13 14:06:42,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485379669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:42,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351553448] [2024-11-13 14:06:42,461 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:06:42,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:42,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:42,464 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:42,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:06:42,649 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-13 14:06:42,649 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:06:42,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-13 14:06:42,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:42,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:06:42,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:06:42,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:06:42,797 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:06:42,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:06:42,945 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 15 [2024-11-13 14:06:42,967 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 23 treesize of output 22 [2024-11-13 14:06:43,169 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2024-11-13 14:06:43,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-13 14:06:43,339 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2024-11-13 14:06:43,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 44 [2024-11-13 14:06:43,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2024-11-13 14:06:44,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 80 [2024-11-13 14:06:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:06:44,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:44,963 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 136 treesize of output 100 [2024-11-13 14:06:44,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 68 [2024-11-13 14:07:19,427 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:07:19,432 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 2230 treesize of output 2102 [2024-11-13 14:07:19,456 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:07:19,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:07:19,827 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 9788 treesize of output 8772 [2024-11-13 14:07:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 14:07:20,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351553448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:20,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:20,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 38 [2024-11-13 14:07:20,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193929363] [2024-11-13 14:07:20,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:20,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 14:07:20,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:20,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 14:07:20,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1301, Unknown=7, NotChecked=0, Total=1406 [2024-11-13 14:07:20,864 INFO L87 Difference]: Start difference. First operand 209 states and 269 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 38 states have internal predecessors, (84), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:07:23,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:23,146 INFO L93 Difference]: Finished difference Result 281 states and 357 transitions. [2024-11-13 14:07:23,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:07:23,149 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 38 states have internal predecessors, (84), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 50 [2024-11-13 14:07:23,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:23,151 INFO L225 Difference]: With dead ends: 281 [2024-11-13 14:07:23,151 INFO L226 Difference]: Without dead ends: 270 [2024-11-13 14:07:23,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 36.8s TimeCoverageRelationStatistics Valid=141, Invalid=1658, Unknown=7, NotChecked=0, Total=1806 [2024-11-13 14:07:23,153 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:23,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1519 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 14:07:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-13 14:07:23,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 249. [2024-11-13 14:07:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 219 states have (on average 1.2374429223744292) internal successors, (271), 226 states have internal predecessors, (271), 18 states have call successors, (18), 5 states have call predecessors, (18), 11 states have return successors, (33), 17 states have call predecessors, (33), 18 states have call successors, (33) [2024-11-13 14:07:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 322 transitions. [2024-11-13 14:07:23,192 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 322 transitions. Word has length 50 [2024-11-13 14:07:23,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:23,193 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 322 transitions. [2024-11-13 14:07:23,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 38 states have internal predecessors, (84), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:07:23,193 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 322 transitions. [2024-11-13 14:07:23,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:07:23,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:23,195 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:23,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 14:07:23,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 14:07:23,399 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:23,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:23,399 INFO L85 PathProgramCache]: Analyzing trace with hash -640028714, now seen corresponding path program 6 times [2024-11-13 14:07:23,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:23,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433231346] [2024-11-13 14:07:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:23,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:23,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:07:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:23,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 14:07:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:07:23,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:23,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433231346] [2024-11-13 14:07:23,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433231346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:23,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203868614] [2024-11-13 14:07:23,983 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:07:23,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:23,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:23,986 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:23,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:07:24,202 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-13 14:07:24,202 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:07:24,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:07:24,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:24,501 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:07:24,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:07:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:07:25,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203868614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:25,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:25,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 22 [2024-11-13 14:07:25,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534792301] [2024-11-13 14:07:25,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:25,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:07:25,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:25,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:07:25,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:07:25,026 INFO L87 Difference]: Start difference. First operand 249 states and 322 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:07:25,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:25,759 INFO L93 Difference]: Finished difference Result 329 states and 436 transitions. [2024-11-13 14:07:25,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 14:07:25,761 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2024-11-13 14:07:25,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:25,764 INFO L225 Difference]: With dead ends: 329 [2024-11-13 14:07:25,764 INFO L226 Difference]: Without dead ends: 267 [2024-11-13 14:07:25,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 96 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2024-11-13 14:07:25,766 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 21 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:25,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 663 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:07:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-13 14:07:25,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 239. [2024-11-13 14:07:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 210 states have (on average 1.2380952380952381) internal successors, (260), 217 states have internal predecessors, (260), 17 states have call successors, (17), 5 states have call predecessors, (17), 11 states have return successors, (31), 16 states have call predecessors, (31), 17 states have call successors, (31) [2024-11-13 14:07:25,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 308 transitions. [2024-11-13 14:07:25,829 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 308 transitions. Word has length 52 [2024-11-13 14:07:25,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:25,829 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 308 transitions. [2024-11-13 14:07:25,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:07:25,830 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 308 transitions. [2024-11-13 14:07:25,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 14:07:25,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:25,831 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:25,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 14:07:26,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 14:07:26,032 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:26,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:26,033 INFO L85 PathProgramCache]: Analyzing trace with hash 212426667, now seen corresponding path program 7 times [2024-11-13 14:07:26,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:26,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622365466] [2024-11-13 14:07:26,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:26,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:26,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:07:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:26,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 14:07:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 14:07:26,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:26,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622365466] [2024-11-13 14:07:26,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622365466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109970599] [2024-11-13 14:07:26,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:07:26,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:26,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:26,500 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:26,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:07:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:26,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:07:26,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:07:26,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:07:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 14:07:27,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109970599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:27,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:27,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2024-11-13 14:07:27,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957235758] [2024-11-13 14:07:27,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:27,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:07:27,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:27,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:07:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:07:27,464 INFO L87 Difference]: Start difference. First operand 239 states and 308 transitions. Second operand has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 18 states have internal predecessors, (74), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:07:28,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:28,122 INFO L93 Difference]: Finished difference Result 347 states and 459 transitions. [2024-11-13 14:07:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:07:28,124 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 18 states have internal predecessors, (74), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2024-11-13 14:07:28,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:28,126 INFO L225 Difference]: With dead ends: 347 [2024-11-13 14:07:28,126 INFO L226 Difference]: Without dead ends: 255 [2024-11-13 14:07:28,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 102 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:07:28,128 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 28 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:28,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 574 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:07:28,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-13 14:07:28,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 227. [2024-11-13 14:07:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 200 states have (on average 1.235) internal successors, (247), 206 states have internal predecessors, (247), 15 states have call successors, (15), 5 states have call predecessors, (15), 11 states have return successors, (27), 15 states have call predecessors, (27), 15 states have call successors, (27) [2024-11-13 14:07:28,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 289 transitions. [2024-11-13 14:07:28,187 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 289 transitions. Word has length 54 [2024-11-13 14:07:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:28,187 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 289 transitions. [2024-11-13 14:07:28,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 18 states have internal predecessors, (74), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:07:28,188 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 289 transitions. [2024-11-13 14:07:28,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 14:07:28,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:28,189 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:28,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 14:07:28,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 14:07:28,390 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:28,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:28,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1981545015, now seen corresponding path program 1 times [2024-11-13 14:07:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:28,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699986837] [2024-11-13 14:07:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:28,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:28,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:07:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:28,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:07:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:28,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 14:07:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 14:07:28,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:28,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699986837] [2024-11-13 14:07:28,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699986837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:28,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168796410] [2024-11-13 14:07:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:28,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:28,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:28,613 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:28,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:07:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:28,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:07:28,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 14:07:28,960 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:07:28,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168796410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:28,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:07:28,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-13 14:07:28,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235827034] [2024-11-13 14:07:28,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:28,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:07:28,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:28,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:07:28,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:07:28,962 INFO L87 Difference]: Start difference. First operand 227 states and 289 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:07:29,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:29,109 INFO L93 Difference]: Finished difference Result 316 states and 400 transitions. [2024-11-13 14:07:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:07:29,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2024-11-13 14:07:29,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:29,115 INFO L225 Difference]: With dead ends: 316 [2024-11-13 14:07:29,115 INFO L226 Difference]: Without dead ends: 178 [2024-11-13 14:07:29,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:07:29,116 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:29,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 168 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:07:29,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-13 14:07:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 168. [2024-11-13 14:07:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 148 states have (on average 1.2027027027027026) internal successors, (178), 153 states have internal predecessors, (178), 9 states have call successors, (9), 5 states have call predecessors, (9), 10 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-13 14:07:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 202 transitions. [2024-11-13 14:07:29,150 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 202 transitions. Word has length 56 [2024-11-13 14:07:29,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:29,150 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 202 transitions. [2024-11-13 14:07:29,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:07:29,151 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 202 transitions. [2024-11-13 14:07:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 14:07:29,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:29,153 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:29,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 14:07:29,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 14:07:29,354 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:29,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:29,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1319394225, now seen corresponding path program 8 times [2024-11-13 14:07:29,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:29,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722269416] [2024-11-13 14:07:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:29,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:30,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:07:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:30,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-13 14:07:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 14:07:30,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:30,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722269416] [2024-11-13 14:07:30,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722269416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:30,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891008558] [2024-11-13 14:07:30,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:07:30,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:30,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:30,811 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:30,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:07:31,005 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:07:31,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:07:31,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-13 14:07:31,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:31,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:07:31,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:07:31,136 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:07:31,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:07:31,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:07:31,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2024-11-13 14:07:31,481 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2024-11-13 14:07:31,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-13 14:07:31,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-13 14:07:31,729 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2024-11-13 14:07:31,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 38 [2024-11-13 14:07:32,669 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 110 treesize of output 74 [2024-11-13 14:07:32,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:07:32,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-13 14:07:33,122 INFO L349 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2024-11-13 14:07:33,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 30 [2024-11-13 14:07:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 14:07:33,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:07:33,370 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 73 treesize of output 53 [2024-11-13 14:07:33,374 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 57 treesize of output 37 [2024-11-13 14:07:37,653 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_75| Int)) (or (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_75| (store (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_75|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.base|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_75| (store (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_75|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_75|) 0)))) is different from false [2024-11-13 14:07:38,029 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:07:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 6 not checked. [2024-11-13 14:07:38,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891008558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:38,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:38,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 36 [2024-11-13 14:07:38,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550633603] [2024-11-13 14:07:38,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:38,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 14:07:38,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:38,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 14:07:38,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1086, Unknown=1, NotChecked=66, Total=1260 [2024-11-13 14:07:38,561 INFO L87 Difference]: Start difference. First operand 168 states and 202 transitions. Second operand has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:08:17,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:17,441 INFO L93 Difference]: Finished difference Result 189 states and 224 transitions. [2024-11-13 14:08:17,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 14:08:17,443 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2024-11-13 14:08:17,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:17,444 INFO L225 Difference]: With dead ends: 189 [2024-11-13 14:08:17,444 INFO L226 Difference]: Without dead ends: 184 [2024-11-13 14:08:17,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 44.0s TimeCoverageRelationStatistics Valid=237, Invalid=1827, Unknown=10, NotChecked=88, Total=2162 [2024-11-13 14:08:17,446 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 49 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:17,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1183 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 711 Invalid, 0 Unknown, 62 Unchecked, 1.3s Time] [2024-11-13 14:08:17,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-13 14:08:17,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 169. [2024-11-13 14:08:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 149 states have (on average 1.2013422818791946) internal successors, (179), 154 states have internal predecessors, (179), 9 states have call successors, (9), 5 states have call predecessors, (9), 10 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-13 14:08:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 203 transitions. [2024-11-13 14:08:17,473 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 203 transitions. Word has length 56 [2024-11-13 14:08:17,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:17,473 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 203 transitions. [2024-11-13 14:08:17,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:08:17,474 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 203 transitions. [2024-11-13 14:08:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 14:08:17,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:17,475 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:17,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 14:08:17,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:08:17,678 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:08:17,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2100106330, now seen corresponding path program 9 times [2024-11-13 14:08:17,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:17,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828307439] [2024-11-13 14:08:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:17,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:18,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:08:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:18,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-13 14:08:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 14:08:18,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:18,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828307439] [2024-11-13 14:08:18,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828307439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:18,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773363406] [2024-11-13 14:08:18,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:08:18,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:18,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:18,485 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:18,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:08:18,662 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 14:08:18,662 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:08:18,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 14:08:18,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:08:19,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 14:08:20,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773363406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:08:20,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:08:20,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 41 [2024-11-13 14:08:20,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555271899] [2024-11-13 14:08:20,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:20,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 14:08:20,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:20,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 14:08:20,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 14:08:20,503 INFO L87 Difference]: Start difference. First operand 169 states and 203 transitions. Second operand has 41 states, 41 states have (on average 2.024390243902439) internal successors, (83), 38 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:08:22,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:22,423 INFO L93 Difference]: Finished difference Result 294 states and 374 transitions. [2024-11-13 14:08:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 14:08:22,424 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.024390243902439) internal successors, (83), 38 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-11-13 14:08:22,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:22,425 INFO L225 Difference]: With dead ends: 294 [2024-11-13 14:08:22,425 INFO L226 Difference]: Without dead ends: 289 [2024-11-13 14:08:22,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=206, Invalid=2344, Unknown=0, NotChecked=0, Total=2550 [2024-11-13 14:08:22,427 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 112 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:22,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1725 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 14:08:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-13 14:08:22,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 201. [2024-11-13 14:08:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 179 states have (on average 1.1843575418994414) internal successors, (212), 184 states have internal predecessors, (212), 10 states have call successors, (10), 5 states have call predecessors, (10), 11 states have return successors, (18), 11 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-13 14:08:22,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 240 transitions. [2024-11-13 14:08:22,466 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 240 transitions. Word has length 57 [2024-11-13 14:08:22,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:22,466 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 240 transitions. [2024-11-13 14:08:22,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.024390243902439) internal successors, (83), 38 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:08:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 240 transitions. [2024-11-13 14:08:22,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 14:08:22,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:22,468 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:22,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 14:08:22,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:22,668 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:08:22,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1065478312, now seen corresponding path program 1 times [2024-11-13 14:08:22,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:22,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123012225] [2024-11-13 14:08:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:22,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:22,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:08:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:22,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:08:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:22,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:08:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:22,825 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 14:08:22,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:22,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123012225] [2024-11-13 14:08:22,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123012225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:22,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:22,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:08:22,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836587907] [2024-11-13 14:08:22,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:22,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:08:22,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:22,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:08:22,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:08:22,828 INFO L87 Difference]: Start difference. First operand 201 states and 240 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:23,005 INFO L93 Difference]: Finished difference Result 213 states and 252 transitions. [2024-11-13 14:08:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:08:23,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 59 [2024-11-13 14:08:23,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:23,007 INFO L225 Difference]: With dead ends: 213 [2024-11-13 14:08:23,007 INFO L226 Difference]: Without dead ends: 208 [2024-11-13 14:08:23,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:08:23,009 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 18 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:23,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 170 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:08:23,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-13 14:08:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 190. [2024-11-13 14:08:23,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 169 states have (on average 1.1775147928994083) internal successors, (199), 174 states have internal predecessors, (199), 9 states have call successors, (9), 5 states have call predecessors, (9), 11 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-13 14:08:23,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions. [2024-11-13 14:08:23,051 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 59 [2024-11-13 14:08:23,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:23,051 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 225 transitions. [2024-11-13 14:08:23,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:23,052 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions. [2024-11-13 14:08:23,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 14:08:23,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:23,053 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:23,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 14:08:23,053 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:08:23,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:23,053 INFO L85 PathProgramCache]: Analyzing trace with hash 730441135, now seen corresponding path program 10 times [2024-11-13 14:08:23,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:23,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062583876] [2024-11-13 14:08:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:23,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:26,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:08:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:26,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-13 14:08:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 14:08:26,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:26,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062583876] [2024-11-13 14:08:26,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062583876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:26,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024231671] [2024-11-13 14:08:26,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:08:26,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:26,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:26,141 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:26,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 14:08:26,362 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:08:26,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:08:26,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-13 14:08:26,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:26,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:08:26,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:08:26,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:08:26,506 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:08:26,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:08:26,661 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 15 [2024-11-13 14:08:26,672 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 23 treesize of output 22 [2024-11-13 14:08:26,870 INFO L349 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2024-11-13 14:08:26,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2024-11-13 14:08:27,124 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2024-11-13 14:08:27,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 49 [2024-11-13 14:08:27,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2024-11-13 14:08:27,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:08:27,434 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2024-11-13 14:08:27,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2024-11-13 14:08:27,677 INFO L349 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2024-11-13 14:08:27,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 141 treesize of output 69 [2024-11-13 14:08:27,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:08:27,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:08:27,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 62 [2024-11-13 14:08:28,881 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 183 treesize of output 135 [2024-11-13 14:08:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 14:08:33,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:34,508 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 264 treesize of output 196 [2024-11-13 14:08:34,513 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 200 treesize of output 132 [2024-11-13 14:09:55,974 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 14:09:55,974 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 82038 treesize of output 81014 [2024-11-13 14:09:56,100 INFO L349 Elim1Store]: treesize reduction 41, result has 29.3 percent of original size [2024-11-13 14:09:56,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 13016 treesize of output 12712 [2024-11-13 14:09:56,692 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:09:56,693 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:09:56,697 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:09:56,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:09:56,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 2526349 treesize of output 2192934 [2024-11-13 14:10:06,927 WARN L286 SmtUtils]: Spent 10.10s on a formula simplification. DAG size of input: 554 DAG size of output: 652 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:10:07,770 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:10:07,772 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:10:07,785 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:10:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 14:10:25,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024231671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:25,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:25,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 47 [2024-11-13 14:10:25,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175651270] [2024-11-13 14:10:25,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:25,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 14:10:25,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:25,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 14:10:25,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2011, Unknown=19, NotChecked=0, Total=2162 [2024-11-13 14:10:25,113 INFO L87 Difference]: Start difference. First operand 190 states and 225 transitions. Second operand has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:10:31,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:10:34,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:34,400 INFO L93 Difference]: Finished difference Result 257 states and 303 transitions. [2024-11-13 14:10:34,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 14:10:34,401 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 58 [2024-11-13 14:10:34,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:34,403 INFO L225 Difference]: With dead ends: 257 [2024-11-13 14:10:34,403 INFO L226 Difference]: Without dead ends: 243 [2024-11-13 14:10:34,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 93.3s TimeCoverageRelationStatistics Valid=184, Invalid=2553, Unknown=19, NotChecked=0, Total=2756 [2024-11-13 14:10:34,406 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 30 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:34,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1827 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1127 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2024-11-13 14:10:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-13 14:10:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 228. [2024-11-13 14:10:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 202 states have (on average 1.1782178217821782) internal successors, (238), 209 states have internal predecessors, (238), 12 states have call successors, (12), 6 states have call predecessors, (12), 13 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2024-11-13 14:10:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 272 transitions. [2024-11-13 14:10:34,463 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 272 transitions. Word has length 58 [2024-11-13 14:10:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:34,464 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 272 transitions. [2024-11-13 14:10:34,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:10:34,464 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 272 transitions. [2024-11-13 14:10:34,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 14:10:34,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:34,466 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:34,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 14:10:34,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:34,670 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:34,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:34,671 INFO L85 PathProgramCache]: Analyzing trace with hash -885229341, now seen corresponding path program 1 times [2024-11-13 14:10:34,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:34,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835258362] [2024-11-13 14:10:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:34,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:34,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:10:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:34,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:10:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:34,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:10:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-13 14:10:34,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:34,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835258362] [2024-11-13 14:10:34,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835258362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:10:34,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:10:34,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:10:34,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551695782] [2024-11-13 14:10:34,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:10:34,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:10:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:34,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:10:34,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:10:34,757 INFO L87 Difference]: Start difference. First operand 228 states and 272 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:10:34,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:34,833 INFO L93 Difference]: Finished difference Result 257 states and 308 transitions. [2024-11-13 14:10:34,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:10:34,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 60 [2024-11-13 14:10:34,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:34,836 INFO L225 Difference]: With dead ends: 257 [2024-11-13 14:10:34,836 INFO L226 Difference]: Without dead ends: 232 [2024-11-13 14:10:34,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:10:34,839 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:34,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:10:34,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-13 14:10:34,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-11-13 14:10:34,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 206 states have (on average 1.1796116504854368) internal successors, (243), 213 states have internal predecessors, (243), 12 states have call successors, (12), 6 states have call predecessors, (12), 13 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2024-11-13 14:10:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 277 transitions. [2024-11-13 14:10:34,893 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 277 transitions. Word has length 60 [2024-11-13 14:10:34,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:34,893 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 277 transitions. [2024-11-13 14:10:34,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:10:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 277 transitions. [2024-11-13 14:10:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 14:10:34,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:34,895 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:34,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 14:10:34,896 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:34,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1278256351, now seen corresponding path program 1 times [2024-11-13 14:10:34,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:34,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933941522] [2024-11-13 14:10:34,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:34,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:35,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:10:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:35,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:10:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:35,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:10:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-13 14:10:35,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:35,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933941522] [2024-11-13 14:10:35,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933941522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:35,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175247161] [2024-11-13 14:10:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:35,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:35,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:35,604 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:35,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 14:10:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:35,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 14:10:35,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:36,297 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 11 [2024-11-13 14:10:36,375 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 0 case distinctions, treesize of input 39 treesize of output 16 [2024-11-13 14:10:36,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:10:36,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-13 14:10:36,533 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 16 treesize of output 8 [2024-11-13 14:10:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:10:36,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:36,564 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 62 treesize of output 58 [2024-11-13 14:10:36,678 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 42 treesize of output 34 [2024-11-13 14:10:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-13 14:10:36,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175247161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:36,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:36,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 19 [2024-11-13 14:10:36,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702481828] [2024-11-13 14:10:36,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:36,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:10:36,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:36,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:10:36,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:10:36,810 INFO L87 Difference]: Start difference. First operand 232 states and 277 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:10:40,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:10:44,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:10:49,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:10:53,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:10:57,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:01,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:05,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:05,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:05,725 INFO L93 Difference]: Finished difference Result 289 states and 344 transitions. [2024-11-13 14:11:05,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:11:05,729 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-11-13 14:11:05,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:05,732 INFO L225 Difference]: With dead ends: 289 [2024-11-13 14:11:05,733 INFO L226 Difference]: Without dead ends: 284 [2024-11-13 14:11:05,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:11:05,737 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 39 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:05,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 567 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 316 Invalid, 7 Unknown, 0 Unchecked, 28.7s Time] [2024-11-13 14:11:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-13 14:11:05,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 256. [2024-11-13 14:11:05,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 228 states have (on average 1.1929824561403508) internal successors, (272), 235 states have internal predecessors, (272), 13 states have call successors, (13), 7 states have call predecessors, (13), 14 states have return successors, (23), 13 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-13 14:11:05,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 308 transitions. [2024-11-13 14:11:05,840 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 308 transitions. Word has length 60 [2024-11-13 14:11:05,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:05,840 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 308 transitions. [2024-11-13 14:11:05,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:11:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 308 transitions. [2024-11-13 14:11:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 14:11:05,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:05,844 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:05,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 14:11:06,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 14:11:06,048 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:06,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash -919586872, now seen corresponding path program 2 times [2024-11-13 14:11:06,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:06,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645586173] [2024-11-13 14:11:06,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:06,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:07,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:07,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:11:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:07,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:11:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:11:07,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:07,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645586173] [2024-11-13 14:11:07,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645586173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:07,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4799950] [2024-11-13 14:11:07,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:11:07,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:07,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:07,049 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:07,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 14:11:07,247 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:11:07,248 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:11:07,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-13 14:11:07,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:07,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:11:07,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:11:08,695 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-13 14:11:08,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-13 14:11:09,084 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 28 treesize of output 27 [2024-11-13 14:11:09,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 14:11:09,254 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 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-13 14:11:09,269 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 0 case distinctions, treesize of input 59 treesize of output 32 [2024-11-13 14:11:09,431 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 63 treesize of output 43 [2024-11-13 14:11:09,436 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 47 treesize of output 31 [2024-11-13 14:11:09,542 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 7 treesize of output 3 [2024-11-13 14:11:09,675 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-13 14:11:09,676 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2024-11-13 14:11:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 14:11:09,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:09,839 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 198 treesize of output 170 [2024-11-13 14:11:11,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4799950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:11,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:11:11,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 29 [2024-11-13 14:11:11,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389680718] [2024-11-13 14:11:11,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:11,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 14:11:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:11,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 14:11:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 14:11:11,137 INFO L87 Difference]: Start difference. First operand 256 states and 308 transitions. Second operand has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 14:11:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:12,825 INFO L93 Difference]: Finished difference Result 304 states and 363 transitions. [2024-11-13 14:11:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 14:11:12,826 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 61 [2024-11-13 14:11:12,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:12,828 INFO L225 Difference]: With dead ends: 304 [2024-11-13 14:11:12,828 INFO L226 Difference]: Without dead ends: 299 [2024-11-13 14:11:12,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=206, Invalid=1686, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 14:11:12,830 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 98 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:12,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 794 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:11:12,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-13 14:11:12,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 266. [2024-11-13 14:11:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 238 states have (on average 1.1932773109243697) internal successors, (284), 244 states have internal predecessors, (284), 13 states have call successors, (13), 7 states have call predecessors, (13), 14 states have return successors, (23), 14 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-13 14:11:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 320 transitions. [2024-11-13 14:11:12,888 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 320 transitions. Word has length 61 [2024-11-13 14:11:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:12,888 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 320 transitions. [2024-11-13 14:11:12,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 14:11:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 320 transitions. [2024-11-13 14:11:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 14:11:12,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:12,890 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:12,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 14:11:13,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 14:11:13,091 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:13,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:13,091 INFO L85 PathProgramCache]: Analyzing trace with hash -336827061, now seen corresponding path program 11 times [2024-11-13 14:11:13,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:13,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478560181] [2024-11-13 14:11:13,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:13,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:13,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:13,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-13 14:11:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-13 14:11:13,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:13,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478560181] [2024-11-13 14:11:13,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478560181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:13,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151928790] [2024-11-13 14:11:13,582 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:11:13,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:13,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:13,585 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:13,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 14:11:13,878 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 14:11:13,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:11:13,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:11:13,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 14:11:14,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-13 14:11:14,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151928790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:11:14,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:11:14,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-13 14:11:14,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736941357] [2024-11-13 14:11:14,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:14,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 14:11:14,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:14,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 14:11:14,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:11:14,759 INFO L87 Difference]: Start difference. First operand 266 states and 320 transitions. Second operand has 20 states, 20 states have (on average 3.8) internal successors, (76), 20 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:11:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:16,616 INFO L93 Difference]: Finished difference Result 654 states and 841 transitions. [2024-11-13 14:11:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 14:11:16,617 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.8) internal successors, (76), 20 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-11-13 14:11:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:16,619 INFO L225 Difference]: With dead ends: 654 [2024-11-13 14:11:16,620 INFO L226 Difference]: Without dead ends: 431 [2024-11-13 14:11:16,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=490, Invalid=1232, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 14:11:16,622 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 67 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:16,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 449 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:11:16,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-13 14:11:16,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 269. [2024-11-13 14:11:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 241 states have (on average 1.1825726141078838) internal successors, (285), 247 states have internal predecessors, (285), 13 states have call successors, (13), 7 states have call predecessors, (13), 14 states have return successors, (23), 14 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-13 14:11:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 321 transitions. [2024-11-13 14:11:16,690 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 321 transitions. Word has length 60 [2024-11-13 14:11:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:16,690 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 321 transitions. [2024-11-13 14:11:16,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.8) internal successors, (76), 20 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:11:16,691 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 321 transitions. [2024-11-13 14:11:16,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 14:11:16,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:16,692 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:16,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 14:11:16,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 14:11:16,893 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:16,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1591445641, now seen corresponding path program 2 times [2024-11-13 14:11:16,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:16,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932557299] [2024-11-13 14:11:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:16,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:17,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:17,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-13 14:11:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 56 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 14:11:17,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:17,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932557299] [2024-11-13 14:11:17,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932557299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:17,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515374622] [2024-11-13 14:11:17,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:11:17,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:17,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:17,527 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:17,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 14:11:17,736 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:11:17,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:11:17,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 14:11:17,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 34 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:11:18,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 18 proven. 47 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 14:11:18,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515374622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:11:18,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:11:18,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 24 [2024-11-13 14:11:18,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863125631] [2024-11-13 14:11:18,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:18,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 14:11:18,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:18,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 14:11:18,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:11:18,731 INFO L87 Difference]: Start difference. First operand 269 states and 321 transitions. Second operand has 24 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 23 states have internal predecessors, (89), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:11:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:19,536 INFO L93 Difference]: Finished difference Result 420 states and 524 transitions. [2024-11-13 14:11:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 14:11:19,537 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 23 states have internal predecessors, (89), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-11-13 14:11:19,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:19,539 INFO L225 Difference]: With dead ends: 420 [2024-11-13 14:11:19,539 INFO L226 Difference]: Without dead ends: 328 [2024-11-13 14:11:19,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:11:19,543 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 35 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:19,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 555 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:11:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-13 14:11:19,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 239. [2024-11-13 14:11:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 216 states have (on average 1.1805555555555556) internal successors, (255), 220 states have internal predecessors, (255), 10 states have call successors, (10), 6 states have call predecessors, (10), 12 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-13 14:11:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 283 transitions. [2024-11-13 14:11:19,607 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 283 transitions. Word has length 60 [2024-11-13 14:11:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:19,607 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 283 transitions. [2024-11-13 14:11:19,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 23 states have internal predecessors, (89), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:11:19,607 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 283 transitions. [2024-11-13 14:11:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:11:19,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:19,609 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:19,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-13 14:11:19,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 14:11:19,809 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:19,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1609232385, now seen corresponding path program 3 times [2024-11-13 14:11:19,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:19,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973526578] [2024-11-13 14:11:19,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:19,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:20,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:20,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:11:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:20,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:11:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:11:20,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:20,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973526578] [2024-11-13 14:11:20,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973526578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:20,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341807544] [2024-11-13 14:11:20,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:11:20,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:20,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:20,969 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:20,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 14:11:21,190 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 14:11:21,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:11:21,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 14:11:21,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:11:22,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:11:23,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341807544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:11:23,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:11:23,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 17] total 40 [2024-11-13 14:11:23,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365805] [2024-11-13 14:11:23,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:23,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-13 14:11:23,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:23,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-13 14:11:23,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1425, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 14:11:23,103 INFO L87 Difference]: Start difference. First operand 239 states and 283 transitions. Second operand has 40 states, 40 states have (on average 2.5) internal successors, (100), 37 states have internal predecessors, (100), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-13 14:11:26,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:26,825 INFO L93 Difference]: Finished difference Result 566 states and 746 transitions. [2024-11-13 14:11:26,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 14:11:26,826 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.5) internal successors, (100), 37 states have internal predecessors, (100), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 62 [2024-11-13 14:11:26,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:26,828 INFO L225 Difference]: With dead ends: 566 [2024-11-13 14:11:26,828 INFO L226 Difference]: Without dead ends: 396 [2024-11-13 14:11:26,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=344, Invalid=3196, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 14:11:26,830 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 108 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:26,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1096 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 14:11:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-13 14:11:26,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 309. [2024-11-13 14:11:26,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 284 states have (on average 1.221830985915493) internal successors, (347), 287 states have internal predecessors, (347), 12 states have call successors, (12), 6 states have call predecessors, (12), 12 states have return successors, (20), 15 states have call predecessors, (20), 12 states have call successors, (20) [2024-11-13 14:11:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 379 transitions. [2024-11-13 14:11:26,904 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 379 transitions. Word has length 62 [2024-11-13 14:11:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:26,905 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 379 transitions. [2024-11-13 14:11:26,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.5) internal successors, (100), 37 states have internal predecessors, (100), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-13 14:11:26,905 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 379 transitions. [2024-11-13 14:11:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:11:26,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:26,907 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:26,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 14:11:27,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 14:11:27,107 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:27,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:27,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1060724062, now seen corresponding path program 1 times [2024-11-13 14:11:27,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:27,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44869425] [2024-11-13 14:11:27,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:27,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:27,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:27,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:11:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:27,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:11:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:11:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44869425] [2024-11-13 14:11:27,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44869425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:11:27,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:11:27,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:11:27,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458140516] [2024-11-13 14:11:27,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:11:27,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:11:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:27,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:11:27,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:11:27,293 INFO L87 Difference]: Start difference. First operand 309 states and 379 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:11:27,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:27,503 INFO L93 Difference]: Finished difference Result 454 states and 567 transitions. [2024-11-13 14:11:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:11:27,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 62 [2024-11-13 14:11:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:27,506 INFO L225 Difference]: With dead ends: 454 [2024-11-13 14:11:27,506 INFO L226 Difference]: Without dead ends: 351 [2024-11-13 14:11:27,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:11:27,507 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:27,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 201 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:11:27,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-13 14:11:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2024-11-13 14:11:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 323 states have (on average 1.2043343653250773) internal successors, (389), 323 states have internal predecessors, (389), 12 states have call successors, (12), 6 states have call predecessors, (12), 15 states have return successors, (25), 21 states have call predecessors, (25), 12 states have call successors, (25) [2024-11-13 14:11:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 426 transitions. [2024-11-13 14:11:27,597 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 426 transitions. Word has length 62 [2024-11-13 14:11:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:27,597 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 426 transitions. [2024-11-13 14:11:27,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:11:27,598 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 426 transitions. [2024-11-13 14:11:27,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 14:11:27,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:27,599 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:27,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-13 14:11:27,600 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:27,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:27,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1601749272, now seen corresponding path program 4 times [2024-11-13 14:11:27,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:27,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536781834] [2024-11-13 14:11:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:27,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:29,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:29,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:11:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:29,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:11:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:11:29,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:29,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536781834] [2024-11-13 14:11:29,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536781834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:29,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665162584] [2024-11-13 14:11:29,956 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:11:29,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:29,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:29,958 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:29,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 14:11:30,202 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:11:30,203 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:11:30,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-13 14:11:30,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:30,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:11:30,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:11:30,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:11:30,623 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:11:30,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:11:30,863 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 23 treesize of output 22 [2024-11-13 14:11:30,906 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 15 [2024-11-13 14:11:32,768 INFO L349 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2024-11-13 14:11:32,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2024-11-13 14:11:33,446 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2024-11-13 14:11:33,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 55 [2024-11-13 14:11:33,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2024-11-13 14:11:33,716 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 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-13 14:11:33,736 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 0 case distinctions, treesize of input 120 treesize of output 73 [2024-11-13 14:11:34,105 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 164 treesize of output 120 [2024-11-13 14:11:34,113 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 124 treesize of output 88 [2024-11-13 14:11:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 14:11:34,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:13:06,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665162584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:06,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:13:06,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2024-11-13 14:13:06,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108296765] [2024-11-13 14:13:06,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:13:06,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 14:13:06,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:06,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 14:13:06,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1591, Unknown=20, NotChecked=0, Total=1722 [2024-11-13 14:13:06,217 INFO L87 Difference]: Start difference. First operand 351 states and 426 transitions. Second operand has 34 states, 34 states have (on average 2.411764705882353) internal successors, (82), 34 states have internal predecessors, (82), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 14:13:09,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:13:09,464 INFO L93 Difference]: Finished difference Result 381 states and 462 transitions. [2024-11-13 14:13:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 14:13:09,465 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.411764705882353) internal successors, (82), 34 states have internal predecessors, (82), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 63 [2024-11-13 14:13:09,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:13:09,467 INFO L225 Difference]: With dead ends: 381 [2024-11-13 14:13:09,467 INFO L226 Difference]: Without dead ends: 370 [2024-11-13 14:13:09,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 95.8s TimeCoverageRelationStatistics Valid=186, Invalid=2244, Unknown=20, NotChecked=0, Total=2450 [2024-11-13 14:13:09,469 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 59 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:13:09,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1052 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 14:13:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-13 14:13:09,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 351. [2024-11-13 14:13:09,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 323 states have (on average 1.2012383900928794) internal successors, (388), 323 states have internal predecessors, (388), 12 states have call successors, (12), 6 states have call predecessors, (12), 15 states have return successors, (25), 21 states have call predecessors, (25), 12 states have call successors, (25) [2024-11-13 14:13:09,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 425 transitions. [2024-11-13 14:13:09,558 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 425 transitions. Word has length 63 [2024-11-13 14:13:09,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:13:09,558 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 425 transitions. [2024-11-13 14:13:09,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.411764705882353) internal successors, (82), 34 states have internal predecessors, (82), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 14:13:09,559 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 425 transitions. [2024-11-13 14:13:09,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:13:09,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:13:09,560 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:13:09,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 14:13:09,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 14:13:09,761 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:13:09,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2134484120, now seen corresponding path program 12 times [2024-11-13 14:13:09,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:09,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961130930] [2024-11-13 14:13:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:09,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:10,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:13:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:10,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-13 14:13:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 39 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:13:10,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:10,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961130930] [2024-11-13 14:13:10,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961130930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:10,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999498467] [2024-11-13 14:13:10,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:13:10,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:10,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:13:10,227 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:13:10,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 14:13:10,513 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-13 14:13:10,513 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:13:10,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 14:13:10,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:13:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 59 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 14:13:10,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:13:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 46 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 14:13:11,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999498467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:13:11,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:13:11,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 23 [2024-11-13 14:13:11,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140116502] [2024-11-13 14:13:11,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:13:11,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:13:11,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:11,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:13:11,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:13:11,488 INFO L87 Difference]: Start difference. First operand 351 states and 425 transitions. Second operand has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 22 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:13:13,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:13:13,535 INFO L93 Difference]: Finished difference Result 595 states and 742 transitions. [2024-11-13 14:13:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 14:13:13,536 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 22 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2024-11-13 14:13:13,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:13:13,538 INFO L225 Difference]: With dead ends: 595 [2024-11-13 14:13:13,538 INFO L226 Difference]: Without dead ends: 463 [2024-11-13 14:13:13,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 125 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=405, Invalid=1947, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 14:13:13,539 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 88 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:13:13,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 627 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:13:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-13 14:13:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 326. [2024-11-13 14:13:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 299 states have (on average 1.2107023411371238) internal successors, (362), 299 states have internal predecessors, (362), 11 states have call successors, (11), 6 states have call predecessors, (11), 15 states have return successors, (23), 20 states have call predecessors, (23), 11 states have call successors, (23) [2024-11-13 14:13:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2024-11-13 14:13:13,631 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 62 [2024-11-13 14:13:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:13:13,632 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2024-11-13 14:13:13,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 22 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:13:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2024-11-13 14:13:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 14:13:13,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:13:13,633 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:13:13,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 14:13:13,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:13,834 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:13:13,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:13,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1618363691, now seen corresponding path program 2 times [2024-11-13 14:13:13,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:13,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100737076] [2024-11-13 14:13:13,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:13,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:14,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:13:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:14,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:13:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:14,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:13:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 14:13:14,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:14,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100737076] [2024-11-13 14:13:14,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100737076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:14,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727956954] [2024-11-13 14:13:14,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:13:14,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:14,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:13:14,367 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:13:14,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 14:13:14,629 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:13:14,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:13:14,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 14:13:14,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:13:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 14:13:15,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:13:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 14:13:16,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727956954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:13:16,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:13:16,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2024-11-13 14:13:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401243161] [2024-11-13 14:13:16,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:13:16,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 14:13:16,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:16,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 14:13:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:13:16,215 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 25 states have internal predecessors, (94), 6 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-13 14:13:17,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:13:17,476 INFO L93 Difference]: Finished difference Result 462 states and 571 transitions. [2024-11-13 14:13:17,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:13:17,477 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 25 states have internal predecessors, (94), 6 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) Word has length 65 [2024-11-13 14:13:17,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:13:17,478 INFO L225 Difference]: With dead ends: 462 [2024-11-13 14:13:17,478 INFO L226 Difference]: Without dead ends: 355 [2024-11-13 14:13:17,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=203, Invalid=1129, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 14:13:17,480 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 127 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:13:17,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 710 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:13:17,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-13 14:13:17,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 316. [2024-11-13 14:13:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 290 states have (on average 1.196551724137931) internal successors, (347), 289 states have internal predecessors, (347), 11 states have call successors, (11), 6 states have call predecessors, (11), 14 states have return successors, (22), 20 states have call predecessors, (22), 11 states have call successors, (22) [2024-11-13 14:13:17,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 380 transitions. [2024-11-13 14:13:17,571 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 380 transitions. Word has length 65 [2024-11-13 14:13:17,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:13:17,572 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 380 transitions. [2024-11-13 14:13:17,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 25 states have internal predecessors, (94), 6 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-13 14:13:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 380 transitions. [2024-11-13 14:13:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 14:13:17,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:13:17,574 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:13:17,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-13 14:13:17,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 14:13:17,774 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:13:17,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:17,775 INFO L85 PathProgramCache]: Analyzing trace with hash 871165271, now seen corresponding path program 3 times [2024-11-13 14:13:17,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:17,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369124888] [2024-11-13 14:13:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:17,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:18,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:13:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:18,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:13:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:18,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:13:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:18,061 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-13 14:13:18,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:18,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369124888] [2024-11-13 14:13:18,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369124888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:18,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235642367] [2024-11-13 14:13:18,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:13:18,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:18,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:13:18,064 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:13:18,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 14:13:18,300 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:13:18,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:13:18,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 14:13:18,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:13:18,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 1 [2024-11-13 14:13:18,442 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 24 treesize of output 16 [2024-11-13 14:13:18,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-13 14:13:18,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 14:13:18,458 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-13 14:13:18,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:13:18,484 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 54 treesize of output 42 [2024-11-13 14:13:18,636 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-13 14:13:18,636 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 11 treesize of output 11 [2024-11-13 14:13:18,660 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-11-13 14:13:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-13 14:13:18,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235642367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:13:18,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:13:18,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2024-11-13 14:13:18,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134693634] [2024-11-13 14:13:18,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:13:18,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:13:18,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:18,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:13:18,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:13:18,714 INFO L87 Difference]: Start difference. First operand 316 states and 380 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:13:19,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:13:19,367 INFO L93 Difference]: Finished difference Result 435 states and 533 transitions. [2024-11-13 14:13:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:13:19,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 65 [2024-11-13 14:13:19,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:13:19,369 INFO L225 Difference]: With dead ends: 435 [2024-11-13 14:13:19,369 INFO L226 Difference]: Without dead ends: 430 [2024-11-13 14:13:19,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:13:19,370 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 36 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:13:19,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 302 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:13:19,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-13 14:13:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 336. [2024-11-13 14:13:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 310 states have (on average 1.2161290322580645) internal successors, (377), 309 states have internal predecessors, (377), 11 states have call successors, (11), 6 states have call predecessors, (11), 14 states have return successors, (22), 20 states have call predecessors, (22), 11 states have call successors, (22) [2024-11-13 14:13:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 410 transitions. [2024-11-13 14:13:19,447 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 410 transitions. Word has length 65 [2024-11-13 14:13:19,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:13:19,448 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 410 transitions. [2024-11-13 14:13:19,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:13:19,448 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 410 transitions. [2024-11-13 14:13:19,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 14:13:19,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:13:19,449 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:13:19,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 14:13:19,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 14:13:19,650 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:13:19,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:19,651 INFO L85 PathProgramCache]: Analyzing trace with hash 478138261, now seen corresponding path program 1 times [2024-11-13 14:13:19,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:19,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915339884] [2024-11-13 14:13:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:19,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:20,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:13:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:20,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:13:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:20,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:13:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 14:13:20,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915339884] [2024-11-13 14:13:20,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915339884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710168682] [2024-11-13 14:13:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:20,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:20,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:13:20,081 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:13:20,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 14:13:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:20,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 14:13:20,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:13:20,636 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 16 treesize of output 8 [2024-11-13 14:13:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 14:13:20,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:13:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 14:13:20,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710168682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:13:20,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:13:20,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 13 [2024-11-13 14:13:20,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692535615] [2024-11-13 14:13:20,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:13:20,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:13:20,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:20,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:13:20,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:13:20,803 INFO L87 Difference]: Start difference. First operand 336 states and 410 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:13:24,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:13:28,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:13:33,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:13:37,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:13:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:13:37,230 INFO L93 Difference]: Finished difference Result 442 states and 542 transitions. [2024-11-13 14:13:37,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:13:37,230 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2024-11-13 14:13:37,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:13:37,232 INFO L225 Difference]: With dead ends: 442 [2024-11-13 14:13:37,232 INFO L226 Difference]: Without dead ends: 358 [2024-11-13 14:13:37,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 129 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:13:37,233 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 81 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:13:37,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 407 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 4 Unknown, 0 Unchecked, 16.3s Time] [2024-11-13 14:13:37,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-13 14:13:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 336. [2024-11-13 14:13:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 310 states have (on average 1.2096774193548387) internal successors, (375), 309 states have internal predecessors, (375), 11 states have call successors, (11), 6 states have call predecessors, (11), 14 states have return successors, (22), 20 states have call predecessors, (22), 11 states have call successors, (22) [2024-11-13 14:13:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 408 transitions. [2024-11-13 14:13:37,316 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 408 transitions. Word has length 65 [2024-11-13 14:13:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:13:37,316 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 408 transitions. [2024-11-13 14:13:37,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:13:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 408 transitions. [2024-11-13 14:13:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 14:13:37,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:13:37,317 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:13:37,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 14:13:37,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 14:13:37,518 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:13:37,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash -452917200, now seen corresponding path program 3 times [2024-11-13 14:13:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808812395] [2024-11-13 14:13:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:39,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:13:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:39,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-13 14:13:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 10 proven. 50 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 14:13:39,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:39,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808812395] [2024-11-13 14:13:39,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808812395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:39,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337226500] [2024-11-13 14:13:39,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:13:39,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:39,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:13:39,755 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:13:39,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 14:13:40,039 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-13 14:13:40,040 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:13:40,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-13 14:13:40,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:13:40,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:13:40,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:13:40,292 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:13:40,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:13:40,444 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 28 treesize of output 16 [2024-11-13 14:13:40,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:13:40,654 INFO L349 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2024-11-13 14:13:40,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2024-11-13 14:13:40,892 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 23 treesize of output 22 [2024-11-13 14:13:40,947 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2024-11-13 14:13:40,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 43 [2024-11-13 14:13:41,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:13:41,197 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2024-11-13 14:13:41,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2024-11-13 14:13:41,490 INFO L349 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2024-11-13 14:13:41,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 123 treesize of output 63 [2024-11-13 14:13:41,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:13:41,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:13:41,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2024-11-13 14:13:43,016 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 161 treesize of output 117 [2024-11-13 14:13:43,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:13:43,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:13:43,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:13:43,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2024-11-13 14:13:44,514 INFO L349 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2024-11-13 14:13:44,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 41 [2024-11-13 14:13:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 52 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 14:13:44,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:13:45,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 101 [2024-11-13 14:13:45,019 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 105 treesize of output 69 [2024-11-13 14:13:50,661 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:13:50,664 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 5110 treesize of output 4982 [2024-11-13 14:14:01,116 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:14:01,146 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:14:01,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:14:01,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45874 treesize of output 45378 [2024-11-13 14:14:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 10 proven. 50 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 14:14:03,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337226500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:14:03,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:14:03,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 19] total 47 [2024-11-13 14:14:03,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498690260] [2024-11-13 14:14:03,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:14:03,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 14:14:03,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:14:03,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 14:14:03,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2019, Unknown=4, NotChecked=0, Total=2162 [2024-11-13 14:14:03,811 INFO L87 Difference]: Start difference. First operand 336 states and 408 transitions. Second operand has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 47 states have internal predecessors, (105), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:14:09,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:14:09,595 INFO L93 Difference]: Finished difference Result 385 states and 460 transitions. [2024-11-13 14:14:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 14:14:09,597 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 47 states have internal predecessors, (105), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 64 [2024-11-13 14:14:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:14:09,599 INFO L225 Difference]: With dead ends: 385 [2024-11-13 14:14:09,599 INFO L226 Difference]: Without dead ends: 380 [2024-11-13 14:14:09,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=342, Invalid=3314, Unknown=4, NotChecked=0, Total=3660 [2024-11-13 14:14:09,601 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 96 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:14:09,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1601 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-13 14:14:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-13 14:14:09,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 337. [2024-11-13 14:14:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 311 states have (on average 1.2090032154340835) internal successors, (376), 310 states have internal predecessors, (376), 11 states have call successors, (11), 6 states have call predecessors, (11), 14 states have return successors, (22), 20 states have call predecessors, (22), 11 states have call successors, (22) [2024-11-13 14:14:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 409 transitions. [2024-11-13 14:14:09,723 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 409 transitions. Word has length 64 [2024-11-13 14:14:09,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:14:09,724 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 409 transitions. [2024-11-13 14:14:09,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 47 states have internal predecessors, (105), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:14:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 409 transitions. [2024-11-13 14:14:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-13 14:14:09,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:14:09,725 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:14:09,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 14:14:09,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 14:14:09,926 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:14:09,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:14:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1287973970, now seen corresponding path program 4 times [2024-11-13 14:14:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:14:09,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665880859] [2024-11-13 14:14:09,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:14:09,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:14:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:10,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:14:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:10,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:14:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:10,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:14:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 14:14:10,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:14:10,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665880859] [2024-11-13 14:14:10,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665880859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:14:10,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307328114] [2024-11-13 14:14:10,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:14:10,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:10,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:14:10,799 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:14:10,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 14:14:11,078 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:14:11,078 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:14:11,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-13 14:14:11,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:14:11,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:14:11,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:14:12,568 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-13 14:14:12,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-13 14:14:13,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2024-11-13 14:14:13,225 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 27 treesize of output 1 [2024-11-13 14:14:13,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 31 [2024-11-13 14:14:13,375 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 48 treesize of output 28 [2024-11-13 14:14:13,480 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 24 treesize of output 16 [2024-11-13 14:14:13,608 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-13 14:14:13,608 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2024-11-13 14:14:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 14:14:13,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:14:13,643 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 118 treesize of output 106 [2024-11-13 14:14:14,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307328114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:14:14,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:14:14,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 31 [2024-11-13 14:14:14,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516226452] [2024-11-13 14:14:14,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:14:14,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 14:14:14,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:14:14,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 14:14:14,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1153, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 14:14:14,754 INFO L87 Difference]: Start difference. First operand 337 states and 409 transitions. Second operand has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 31 states have internal predecessors, (81), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 14:14:17,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:14:17,035 INFO L93 Difference]: Finished difference Result 430 states and 521 transitions. [2024-11-13 14:14:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 14:14:17,035 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 31 states have internal predecessors, (81), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 66 [2024-11-13 14:14:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:14:17,037 INFO L225 Difference]: With dead ends: 430 [2024-11-13 14:14:17,037 INFO L226 Difference]: Without dead ends: 425 [2024-11-13 14:14:17,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 14:14:17,039 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 134 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:14:17,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 901 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:14:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-13 14:14:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 350. [2024-11-13 14:14:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 324 states have (on average 1.212962962962963) internal successors, (393), 323 states have internal predecessors, (393), 11 states have call successors, (11), 6 states have call predecessors, (11), 14 states have return successors, (22), 20 states have call predecessors, (22), 11 states have call successors, (22) [2024-11-13 14:14:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 426 transitions. [2024-11-13 14:14:17,134 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 426 transitions. Word has length 66 [2024-11-13 14:14:17,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:14:17,134 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 426 transitions. [2024-11-13 14:14:17,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 31 states have internal predecessors, (81), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 14:14:17,135 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 426 transitions. [2024-11-13 14:14:17,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 14:14:17,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:14:17,136 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:14:17,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 14:14:17,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:17,336 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:14:17,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:14:17,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1103876967, now seen corresponding path program 4 times [2024-11-13 14:14:17,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:14:17,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867526582] [2024-11-13 14:14:17,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:14:17,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:14:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:17,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:14:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:18,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-13 14:14:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 14:14:18,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:14:18,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867526582] [2024-11-13 14:14:18,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867526582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:14:18,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971438497] [2024-11-13 14:14:18,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:14:18,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:18,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:14:18,374 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:14:18,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 14:14:18,662 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:14:18,662 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:14:18,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-13 14:14:18,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:14:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-13 14:14:20,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:14:21,455 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 14:14:21,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971438497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:14:21,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:14:21,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 21] total 46 [2024-11-13 14:14:21,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734542253] [2024-11-13 14:14:21,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:14:21,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 14:14:21,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:14:21,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 14:14:21,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1920, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 14:14:21,457 INFO L87 Difference]: Start difference. First operand 350 states and 426 transitions. Second operand has 46 states, 46 states have (on average 2.0) internal successors, (92), 43 states have internal predecessors, (92), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:14:24,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:14:24,816 INFO L93 Difference]: Finished difference Result 524 states and 665 transitions. [2024-11-13 14:14:24,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 14:14:24,817 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0) internal successors, (92), 43 states have internal predecessors, (92), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2024-11-13 14:14:24,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:14:24,819 INFO L225 Difference]: With dead ends: 524 [2024-11-13 14:14:24,819 INFO L226 Difference]: Without dead ends: 519 [2024-11-13 14:14:24,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=243, Invalid=3063, Unknown=0, NotChecked=0, Total=3306 [2024-11-13 14:14:24,820 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 124 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:14:24,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2090 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-13 14:14:24,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-11-13 14:14:24,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 351. [2024-11-13 14:14:24,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 325 states have (on average 1.2123076923076923) internal successors, (394), 324 states have internal predecessors, (394), 11 states have call successors, (11), 6 states have call predecessors, (11), 14 states have return successors, (22), 20 states have call predecessors, (22), 11 states have call successors, (22) [2024-11-13 14:14:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 427 transitions. [2024-11-13 14:14:24,927 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 427 transitions. Word has length 65 [2024-11-13 14:14:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:14:24,927 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 427 transitions. [2024-11-13 14:14:24,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0) internal successors, (92), 43 states have internal predecessors, (92), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:14:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 427 transitions. [2024-11-13 14:14:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 14:14:24,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:14:24,929 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:14:24,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 14:14:25,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 14:14:25,129 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:14:25,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:14:25,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1033798866, now seen corresponding path program 5 times [2024-11-13 14:14:25,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:14:25,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670016874] [2024-11-13 14:14:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:14:25,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:14:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:25,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:14:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:25,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:14:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:25,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:14:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:14:25,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:14:25,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670016874] [2024-11-13 14:14:25,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670016874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:14:25,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58318103] [2024-11-13 14:14:25,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:14:25,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:25,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:14:25,426 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:14:25,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 14:14:25,702 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 14:14:25,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:14:25,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 14:14:25,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:14:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:14:26,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:14:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:14:27,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58318103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:14:27,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:14:27,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 17] total 30 [2024-11-13 14:14:27,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109206750] [2024-11-13 14:14:27,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:14:27,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 14:14:27,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:14:27,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 14:14:27,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2024-11-13 14:14:27,209 INFO L87 Difference]: Start difference. First operand 351 states and 427 transitions. Second operand has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 29 states have internal predecessors, (95), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:14:29,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:14:29,883 INFO L93 Difference]: Finished difference Result 643 states and 795 transitions. [2024-11-13 14:14:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-13 14:14:29,884 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 29 states have internal predecessors, (95), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 67 [2024-11-13 14:14:29,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:14:29,886 INFO L225 Difference]: With dead ends: 643 [2024-11-13 14:14:29,886 INFO L226 Difference]: Without dead ends: 492 [2024-11-13 14:14:29,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 114 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=490, Invalid=3416, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 14:14:29,887 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 231 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:14:29,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 660 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:14:29,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-13 14:14:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 414. [2024-11-13 14:14:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 384 states have (on average 1.2109375) internal successors, (465), 382 states have internal predecessors, (465), 11 states have call successors, (11), 6 states have call predecessors, (11), 18 states have return successors, (30), 25 states have call predecessors, (30), 11 states have call successors, (30) [2024-11-13 14:14:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 506 transitions. [2024-11-13 14:14:30,026 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 506 transitions. Word has length 67 [2024-11-13 14:14:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:14:30,026 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 506 transitions. [2024-11-13 14:14:30,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 29 states have internal predecessors, (95), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:14:30,027 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 506 transitions. [2024-11-13 14:14:30,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-13 14:14:30,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:14:30,028 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:14:30,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 14:14:30,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 14:14:30,231 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:14:30,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:14:30,231 INFO L85 PathProgramCache]: Analyzing trace with hash 191206736, now seen corresponding path program 5 times [2024-11-13 14:14:30,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:14:30,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308170277] [2024-11-13 14:14:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:14:30,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:14:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:35,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:14:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:35,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-13 14:14:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 14:14:35,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:14:35,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308170277] [2024-11-13 14:14:35,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308170277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:14:35,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97382023] [2024-11-13 14:14:35,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:14:35,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:35,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:14:35,588 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:14:35,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57be17d5-0d36-4d5d-8e2a-c01165627000/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 14:14:36,034 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-13 14:14:36,035 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:14:36,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-13 14:14:36,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:14:36,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:14:36,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:14:36,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:14:36,399 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 14:14:36,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 14:14:36,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 14:14:36,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:36,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-13 14:14:36,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:36,860 INFO L349 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2024-11-13 14:14:36,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2024-11-13 14:14:37,149 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2024-11-13 14:14:37,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 45 [2024-11-13 14:14:37,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:37,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2024-11-13 14:14:37,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:37,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:37,515 INFO L349 Elim1Store]: treesize reduction 90, result has 36.6 percent of original size [2024-11-13 14:14:37,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 69 [2024-11-13 14:14:37,933 INFO L349 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2024-11-13 14:14:37,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 163 treesize of output 79 [2024-11-13 14:14:37,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:37,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:37,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 62 [2024-11-13 14:14:38,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:38,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:38,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:38,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:38,381 INFO L349 Elim1Store]: treesize reduction 16, result has 71.9 percent of original size [2024-11-13 14:14:38,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 56 [2024-11-13 14:14:38,781 INFO L349 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2024-11-13 14:14:38,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 216 treesize of output 94 [2024-11-13 14:14:38,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:38,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:38,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:38,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:38,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 88 [2024-11-13 14:14:41,355 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 370 treesize of output 290 [2024-11-13 14:14:41,361 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 294 treesize of output 230 [2024-11-13 14:14:43,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:43,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:43,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:43,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:43,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 16 [2024-11-13 14:14:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 65 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 14:14:43,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:14:44,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1032 treesize of output 772 [2024-11-13 14:14:44,499 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 776 treesize of output 516 [2024-11-13 14:16:07,816 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:16:07,823 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:16:07,879 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:16:07,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:16:09,635 INFO L173 IndexEqualityManager]: detected equality via solver