./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b36a429fc2ac304c1da00c90b438bd7c9bbfb7e9d7c6704fc9e7805ab1ca424f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:35:01,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:35:01,933 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:35:01,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:35:01,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:35:01,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:35:01,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:35:01,974 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:35:01,975 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:35:01,975 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:35:01,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:35:01,975 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:35:01,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:35:01,976 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:35:01,976 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:35:01,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:35:01,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:35:01,976 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:35:01,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:35:01,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:35:01,977 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:35:01,977 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:35:01,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:35:01,977 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:35:01,977 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:35:01,978 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:35:01,978 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:35:01,978 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:35:01,978 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:35:01,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:35:01,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:35:01,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:35:01,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:35:01,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:35:01,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:35:01,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:35:01,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:35:01,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:35:01,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:35:01,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:35:01,980 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:35:01,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:35:01,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:35:01,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:35:01,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:35:01,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:35:01,981 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:35:01,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:35:01,981 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_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b36a429fc2ac304c1da00c90b438bd7c9bbfb7e9d7c6704fc9e7805ab1ca424f [2024-11-27 23:35:02,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:35:02,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:35:02,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:35:02,392 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:35:02,393 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:35:02,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c [2024-11-27 23:35:06,012 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/data/1520eaff9/5ce61392543d4c39a1c19a74d7d2e904/FLAGd3c37ad8a [2024-11-27 23:35:06,335 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:35:06,337 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c [2024-11-27 23:35:06,352 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/data/1520eaff9/5ce61392543d4c39a1c19a74d7d2e904/FLAGd3c37ad8a [2024-11-27 23:35:06,385 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/data/1520eaff9/5ce61392543d4c39a1c19a74d7d2e904 [2024-11-27 23:35:06,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:35:06,391 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:35:06,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:35:06,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:35:06,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:35:06,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f56224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06, skipping insertion in model container [2024-11-27 23:35:06,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,421 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:35:06,597 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_f44826e4-ca7f-4d86-8881-bfecde45fd8b/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c[413,426] [2024-11-27 23:35:06,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:35:06,640 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:35:06,655 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c[413,426] [2024-11-27 23:35:06,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:35:06,697 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:35:06,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06 WrapperNode [2024-11-27 23:35:06,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:35:06,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:35:06,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:35:06,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:35:06,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,733 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-27 23:35:06,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:35:06,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:35:06,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:35:06,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:35:06,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,749 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,771 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-27 23:35:06,771 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,771 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,779 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,780 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:35:06,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:35:06,797 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:35:06,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:35:06,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (1/1) ... [2024-11-27 23:35:06,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:35:06,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:06,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:35:06,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:35:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:35:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:35:06,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:35:06,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:35:06,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:35:06,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:35:06,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:35:06,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 23:35:06,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:35:06,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:35:06,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 23:35:06,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 23:35:06,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:35:06,970 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:35:06,971 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:35:07,125 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-27 23:35:07,125 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:35:07,139 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:35:07,140 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:35:07,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:07 BoogieIcfgContainer [2024-11-27 23:35:07,140 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:35:07,143 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:35:07,143 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:35:07,149 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:35:07,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:35:06" (1/3) ... [2024-11-27 23:35:07,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7696a0c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:35:07, skipping insertion in model container [2024-11-27 23:35:07,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:06" (2/3) ... [2024-11-27 23:35:07,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7696a0c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:35:07, skipping insertion in model container [2024-11-27 23:35:07,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:07" (3/3) ... [2024-11-27 23:35:07,152 INFO L128 eAbstractionObserver]: Analyzing ICFG array_init_nondet_vars.c [2024-11-27 23:35:07,171 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:35:07,173 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_init_nondet_vars.c that has 2 procedures, 25 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-27 23:35:07,249 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:35:07,271 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;@797eb18b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:35:07,271 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:35:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 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) [2024-11-27 23:35:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 23:35:07,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:07,288 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:07,291 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:07,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:07,302 INFO L85 PathProgramCache]: Analyzing trace with hash 160400691, now seen corresponding path program 1 times [2024-11-27 23:35:07,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:07,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381643013] [2024-11-27 23:35:07,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:07,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:35:07,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:07,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381643013] [2024-11-27 23:35:07,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381643013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:07,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55807238] [2024-11-27 23:35:07,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:07,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:07,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:07,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:07,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:35:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:07,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:35:07,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:35:07,656 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:35:07,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55807238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:07,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:35:07,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:35:07,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882130599] [2024-11-27 23:35:07,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:07,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:35:07,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:07,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:35:07,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:35:07,692 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 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) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:35:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:07,708 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2024-11-27 23:35:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:35:07,710 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (2), 2 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 20 [2024-11-27 23:35:07,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:07,716 INFO L225 Difference]: With dead ends: 47 [2024-11-27 23:35:07,716 INFO L226 Difference]: Without dead ends: 21 [2024-11-27 23:35:07,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:35:07,723 INFO L435 NwaCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:07,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:07,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-27 23:35:07,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-27 23:35:07,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2024-11-27 23:35:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-27 23:35:07,762 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 20 [2024-11-27 23:35:07,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:07,762 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-27 23:35:07,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:35:07,763 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-27 23:35:07,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 23:35:07,765 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:07,765 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:07,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:35:07,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:35:07,966 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:07,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:07,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1425469579, now seen corresponding path program 1 times [2024-11-27 23:35:07,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:07,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937461530] [2024-11-27 23:35:07,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:07,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:35:08,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:08,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937461530] [2024-11-27 23:35:08,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937461530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:08,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:08,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:35:08,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168483897] [2024-11-27 23:35:08,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:08,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:35:08,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:08,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:35:08,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:08,372 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-27 23:35:08,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:08,465 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-27 23:35:08,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:35:08,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-27 23:35:08,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:08,469 INFO L225 Difference]: With dead ends: 39 [2024-11-27 23:35:08,469 INFO L226 Difference]: Without dead ends: 31 [2024-11-27 23:35:08,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:08,471 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:08,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 53 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:08,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-27 23:35:08,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2024-11-27 23:35:08,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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) [2024-11-27 23:35:08,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-27 23:35:08,487 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 20 [2024-11-27 23:35:08,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:08,487 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-27 23:35:08,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-27 23:35:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-27 23:35:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-27 23:35:08,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:08,488 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:08,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:35:08,489 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:08,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2021235454, now seen corresponding path program 1 times [2024-11-27 23:35:08,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:08,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044704066] [2024-11-27 23:35:08,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:08,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 23:35:09,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:09,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044704066] [2024-11-27 23:35:09,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044704066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:09,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525451926] [2024-11-27 23:35:09,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:09,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:09,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:09,386 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:09,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:35:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:09,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 23:35:09,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:09,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:35:10,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:35:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 23:35:10,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:35:10,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:35:10,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:35:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 23:35:10,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525451926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:35:10,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:35:10,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 22 [2024-11-27 23:35:10,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279995348] [2024-11-27 23:35:10,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:35:10,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-27 23:35:10,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:10,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-27 23:35:10,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:35:10,429 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 22 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 16 states have internal predecessors, (38), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-27 23:35:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:10,780 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2024-11-27 23:35:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:35:10,781 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 16 states have internal predecessors, (38), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 28 [2024-11-27 23:35:10,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:10,783 INFO L225 Difference]: With dead ends: 48 [2024-11-27 23:35:10,783 INFO L226 Difference]: Without dead ends: 46 [2024-11-27 23:35:10,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2024-11-27 23:35:10,784 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 101 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:10,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 180 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:35:10,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-27 23:35:10,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2024-11-27 23:35:10,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) [2024-11-27 23:35:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-27 23:35:10,798 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 28 [2024-11-27 23:35:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:10,799 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-27 23:35:10,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 16 states have internal predecessors, (38), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-27 23:35:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-27 23:35:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-27 23:35:10,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:10,800 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:10,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:35:11,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:11,001 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:11,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:11,001 INFO L85 PathProgramCache]: Analyzing trace with hash -322700408, now seen corresponding path program 1 times [2024-11-27 23:35:11,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:11,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626736668] [2024-11-27 23:35:11,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:11,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:35:11,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:11,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626736668] [2024-11-27 23:35:11,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626736668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:11,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106880352] [2024-11-27 23:35:11,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:11,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:11,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:11,193 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:11,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:35:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:11,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:35:11,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:35:11,369 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:35:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:35:11,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106880352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:35:11,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:35:11,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-27 23:35:11,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710576381] [2024-11-27 23:35:11,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:35:11,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:35:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:11,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:35:11,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:35:11,464 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-27 23:35:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:11,587 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2024-11-27 23:35:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:35:11,588 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2024-11-27 23:35:11,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:11,589 INFO L225 Difference]: With dead ends: 53 [2024-11-27 23:35:11,591 INFO L226 Difference]: Without dead ends: 41 [2024-11-27 23:35:11,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:35:11,594 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:11,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 94 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:11,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-27 23:35:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2024-11-27 23:35:11,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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) [2024-11-27 23:35:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-27 23:35:11,605 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2024-11-27 23:35:11,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:11,606 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-27 23:35:11,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-27 23:35:11,606 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-27 23:35:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-27 23:35:11,607 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:11,607 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:11,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:35:11,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:11,808 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:11,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:11,809 INFO L85 PathProgramCache]: Analyzing trace with hash -108012145, now seen corresponding path program 2 times [2024-11-27 23:35:11,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:11,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859181486] [2024-11-27 23:35:11,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:35:11,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:11,861 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:35:11,861 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:35:12,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:12,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859181486] [2024-11-27 23:35:12,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859181486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:12,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671171771] [2024-11-27 23:35:12,534 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:35:12,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:12,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:12,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:12,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:35:12,615 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:35:12,615 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:12,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-27 23:35:12,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:12,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:35:13,260 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 30 treesize of output 14 [2024-11-27 23:35:13,442 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 22 treesize of output 10 [2024-11-27 23:35:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:35:13,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:35:17,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671171771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:17,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:35:17,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 23 [2024-11-27 23:35:17,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605605678] [2024-11-27 23:35:17,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:35:17,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 23:35:17,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:17,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 23:35:17,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=501, Unknown=1, NotChecked=0, Total=600 [2024-11-27 23:35:17,727 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 18 states have internal predecessors, (38), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-27 23:35:21,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:35:26,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:35:34,545 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] [2024-11-27 23:35:34,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:34,545 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2024-11-27 23:35:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:35:34,550 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 18 states have internal predecessors, (38), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 36 [2024-11-27 23:35:34,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:34,551 INFO L225 Difference]: With dead ends: 70 [2024-11-27 23:35:34,551 INFO L226 Difference]: Without dead ends: 68 [2024-11-27 23:35:34,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=254, Invalid=1076, Unknown=2, NotChecked=0, Total=1332 [2024-11-27 23:35:34,553 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 133 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 23 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:34,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 193 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 288 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2024-11-27 23:35:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-27 23:35:34,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 43. [2024-11-27 23:35:34,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:35:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-11-27 23:35:34,572 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 36 [2024-11-27 23:35:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:34,572 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-11-27 23:35:34,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 18 states have internal predecessors, (38), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-27 23:35:34,573 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-11-27 23:35:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-27 23:35:34,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:34,574 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:34,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:35:34,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:34,774 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:34,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash -720083563, now seen corresponding path program 2 times [2024-11-27 23:35:34,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:34,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636222925] [2024-11-27 23:35:34,776 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:35:34,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:34,806 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:35:34,806 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:35:35,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:35,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636222925] [2024-11-27 23:35:35,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636222925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:35,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046816911] [2024-11-27 23:35:35,320 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:35:35,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:35,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:35,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:35,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:35:35,396 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:35:35,396 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:35,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-27 23:35:35,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:35,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:35:35,800 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 28 treesize of output 10 [2024-11-27 23:35:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:35:35,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:35:36,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:35:36,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:35:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:35:36,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046816911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:35:36,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:35:36,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2024-11-27 23:35:36,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407006108] [2024-11-27 23:35:36,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:35:36,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 23:35:36,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:36,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 23:35:36,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2024-11-27 23:35:36,312 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 25 states have internal predecessors, (55), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-27 23:35:37,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:37,171 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2024-11-27 23:35:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:35:37,172 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 25 states have internal predecessors, (55), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 40 [2024-11-27 23:35:37,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:37,175 INFO L225 Difference]: With dead ends: 75 [2024-11-27 23:35:37,175 INFO L226 Difference]: Without dead ends: 73 [2024-11-27 23:35:37,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=379, Invalid=1427, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 23:35:37,177 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 133 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:37,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 191 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:35:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-27 23:35:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 56. [2024-11-27 23:35:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 47 states have internal predecessors, (50), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:35:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-11-27 23:35:37,190 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 40 [2024-11-27 23:35:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:37,190 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-11-27 23:35:37,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 25 states have internal predecessors, (55), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-27 23:35:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-11-27 23:35:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-27 23:35:37,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:37,192 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:37,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:35:37,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 23:35:37,393 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:37,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:37,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1255436962, now seen corresponding path program 3 times [2024-11-27 23:35:37,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:37,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786732550] [2024-11-27 23:35:37,394 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:35:37,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:37,421 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 23:35:37,422 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 23:35:38,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:38,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786732550] [2024-11-27 23:35:38,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786732550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:38,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280623064] [2024-11-27 23:35:38,084 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:35:38,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:38,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:38,088 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:38,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:35:38,174 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 23:35:38,174 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:38,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-27 23:35:38,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:38,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:35:38,589 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 23:35:38,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-27 23:35:38,747 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 28 treesize of output 10 [2024-11-27 23:35:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:35:38,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:35:47,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280623064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:47,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:35:47,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2024-11-27 23:35:47,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300376463] [2024-11-27 23:35:47,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:35:47,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 23:35:47,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:47,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 23:35:47,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=424, Unknown=2, NotChecked=0, Total=506 [2024-11-27 23:35:47,096 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 18 states have internal predecessors, (45), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-27 23:35:51,230 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] [2024-11-27 23:35:51,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:51,630 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2024-11-27 23:35:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:35:51,631 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 18 states have internal predecessors, (45), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 48 [2024-11-27 23:35:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:51,632 INFO L225 Difference]: With dead ends: 80 [2024-11-27 23:35:51,632 INFO L226 Difference]: Without dead ends: 78 [2024-11-27 23:35:51,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=144, Invalid=724, Unknown=2, NotChecked=0, Total=870 [2024-11-27 23:35:51,633 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 57 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:51,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 218 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 319 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-27 23:35:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-27 23:35:51,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 54. [2024-11-27 23:35:51,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-27 23:35:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2024-11-27 23:35:51,652 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 48 [2024-11-27 23:35:51,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:51,653 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2024-11-27 23:35:51,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 18 states have internal predecessors, (45), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-27 23:35:51,653 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2024-11-27 23:35:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-27 23:35:51,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:51,654 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:51,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:35:51,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:51,859 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:51,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:51,859 INFO L85 PathProgramCache]: Analyzing trace with hash 420624680, now seen corresponding path program 4 times [2024-11-27 23:35:51,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:51,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639036440] [2024-11-27 23:35:51,859 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:35:51,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:51,881 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:35:51,881 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 23:35:52,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:52,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639036440] [2024-11-27 23:35:52,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639036440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:52,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767448392] [2024-11-27 23:35:52,438 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:35:52,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:52,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:52,442 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:52,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:35:52,511 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:35:52,511 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:52,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 23:35:52,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:52,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:35:53,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:35:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 23:35:53,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:35:53,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:35:53,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:35:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 23:35:53,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767448392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:35:53,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:35:53,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 28 [2024-11-27 23:35:53,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51367972] [2024-11-27 23:35:53,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:35:53,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 23:35:53,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:53,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 23:35:53,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:35:53,751 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 28 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 23 states have internal predecessors, (61), 9 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-27 23:35:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:54,575 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2024-11-27 23:35:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:35:54,575 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 23 states have internal predecessors, (61), 9 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) Word has length 52 [2024-11-27 23:35:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:54,576 INFO L225 Difference]: With dead ends: 96 [2024-11-27 23:35:54,577 INFO L226 Difference]: Without dead ends: 94 [2024-11-27 23:35:54,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 23:35:54,578 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 63 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:54,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 412 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:35:54,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-27 23:35:54,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 59. [2024-11-27 23:35:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-27 23:35:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2024-11-27 23:35:54,591 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 52 [2024-11-27 23:35:54,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:54,591 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2024-11-27 23:35:54,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 23 states have internal predecessors, (61), 9 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-27 23:35:54,591 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2024-11-27 23:35:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-27 23:35:54,592 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:54,592 INFO L218 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] [2024-11-27 23:35:54,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:35:54,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 23:35:54,797 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:54,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1618261081, now seen corresponding path program 5 times [2024-11-27 23:35:54,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:54,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576712592] [2024-11-27 23:35:54,797 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:35:54,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:54,820 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-27 23:35:54,821 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 35 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 23:35:55,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:55,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576712592] [2024-11-27 23:35:55,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576712592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:55,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785204656] [2024-11-27 23:35:55,100 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:35:55,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:55,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:55,102 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:55,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:35:55,175 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-27 23:35:55,175 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:55,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:35:55,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 23:35:55,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:35:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 23:35:55,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785204656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:35:55,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:35:55,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2024-11-27 23:35:55,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551759887] [2024-11-27 23:35:55,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:35:55,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 23:35:55,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:55,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 23:35:55,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:35:55,658 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-27 23:35:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:55,975 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2024-11-27 23:35:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:35:55,976 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 52 [2024-11-27 23:35:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:55,977 INFO L225 Difference]: With dead ends: 131 [2024-11-27 23:35:55,977 INFO L226 Difference]: Without dead ends: 107 [2024-11-27 23:35:55,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2024-11-27 23:35:55,978 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 138 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:55,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 126 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:35:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-27 23:35:55,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 81. [2024-11-27 23:35:55,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 states have internal predecessors, (75), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:35:55,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2024-11-27 23:35:55,996 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 52 [2024-11-27 23:35:55,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:55,996 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2024-11-27 23:35:55,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-27 23:35:55,997 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2024-11-27 23:35:55,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 23:35:55,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:55,998 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:56,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:35:56,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:56,202 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:56,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:56,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1851608238, now seen corresponding path program 6 times [2024-11-27 23:35:56,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:56,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018869537] [2024-11-27 23:35:56,202 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:35:56,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:56,234 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-27 23:35:56,234 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 23:35:56,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:56,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018869537] [2024-11-27 23:35:56,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018869537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:56,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027077156] [2024-11-27 23:35:56,411 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:35:56,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:56,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:56,415 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:56,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:35:56,493 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-27 23:35:56,493 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:56,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:35:56,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 23:35:56,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:35:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 23:35:56,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027077156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:35:56,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:35:56,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-27 23:35:56,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924016888] [2024-11-27 23:35:56,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:35:56,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:35:56,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:56,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:35:56,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:35:56,871 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-27 23:35:57,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:57,032 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2024-11-27 23:35:57,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:35:57,033 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 56 [2024-11-27 23:35:57,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:57,034 INFO L225 Difference]: With dead ends: 100 [2024-11-27 23:35:57,034 INFO L226 Difference]: Without dead ends: 82 [2024-11-27 23:35:57,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 99 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:35:57,035 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:57,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 139 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:57,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-27 23:35:57,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 69. [2024-11-27 23:35:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 states have internal predecessors, (62), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:35:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2024-11-27 23:35:57,051 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 56 [2024-11-27 23:35:57,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:57,051 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2024-11-27 23:35:57,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-27 23:35:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2024-11-27 23:35:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-27 23:35:57,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:57,052 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:57,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:35:57,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:57,257 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:57,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1295115595, now seen corresponding path program 7 times [2024-11-27 23:35:57,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:57,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386518495] [2024-11-27 23:35:57,258 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:35:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 50 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:35:58,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386518495] [2024-11-27 23:35:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386518495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854726079] [2024-11-27 23:35:58,056 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:35:58,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:58,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:58,059 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:58,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:35:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:58,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-27 23:35:58,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:58,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:35:58,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:35:58,810 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 34 treesize of output 14 [2024-11-27 23:35:59,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:35:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 26 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 23:35:59,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:36:07,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854726079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:36:07,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:36:07,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 31 [2024-11-27 23:36:07,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524549559] [2024-11-27 23:36:07,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:36:07,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-27 23:36:07,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:36:07,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-27 23:36:07,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1144, Unknown=2, NotChecked=0, Total=1332 [2024-11-27 23:36:07,585 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 31 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 27 states have internal predecessors, (65), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-27 23:36:11,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:36:15,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:36:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:36:16,280 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2024-11-27 23:36:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:36:16,281 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 27 states have internal predecessors, (65), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) Word has length 60 [2024-11-27 23:36:16,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:36:16,282 INFO L225 Difference]: With dead ends: 86 [2024-11-27 23:36:16,282 INFO L226 Difference]: Without dead ends: 84 [2024-11-27 23:36:16,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=314, Invalid=1754, Unknown=2, NotChecked=0, Total=2070 [2024-11-27 23:36:16,284 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 113 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:36:16,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 179 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 412 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2024-11-27 23:36:16,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-27 23:36:16,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 77. [2024-11-27 23:36:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:36:16,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2024-11-27 23:36:16,301 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 60 [2024-11-27 23:36:16,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:36:16,302 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2024-11-27 23:36:16,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 27 states have internal predecessors, (65), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-27 23:36:16,302 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2024-11-27 23:36:16,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 23:36:16,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:36:16,303 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:36:16,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 23:36:16,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:36:16,503 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:36:16,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:36:16,504 INFO L85 PathProgramCache]: Analyzing trace with hash 486776763, now seen corresponding path program 8 times [2024-11-27 23:36:16,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:36:16,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413401989] [2024-11-27 23:36:16,504 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:36:16,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:36:16,529 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:36:16,529 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:36:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 19 proven. 54 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:36:17,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:36:17,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413401989] [2024-11-27 23:36:17,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413401989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:36:17,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287030735] [2024-11-27 23:36:17,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:36:17,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:36:17,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:36:17,296 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:36:17,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:36:17,373 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:36:17,373 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:36:17,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 23:36:17,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:36:17,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:36:18,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2024-11-27 23:36:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 15 proven. 58 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:36:18,301 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:36:18,643 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 19 treesize of output 17 [2024-11-27 23:36:18,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:36:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 15 proven. 58 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:36:19,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287030735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:36:19,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:36:19,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 43 [2024-11-27 23:36:19,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448793075] [2024-11-27 23:36:19,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:36:19,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-27 23:36:19,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:36:19,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-27 23:36:19,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1549, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 23:36:19,107 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 43 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 38 states have internal predecessors, (100), 13 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2024-11-27 23:36:19,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:36:19,927 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2024-11-27 23:36:19,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:36:19,928 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 38 states have internal predecessors, (100), 13 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) Word has length 64 [2024-11-27 23:36:19,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:36:19,929 INFO L225 Difference]: With dead ends: 89 [2024-11-27 23:36:19,929 INFO L226 Difference]: Without dead ends: 71 [2024-11-27 23:36:19,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=391, Invalid=2059, Unknown=0, NotChecked=0, Total=2450 [2024-11-27 23:36:19,930 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 104 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:36:19,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 309 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:36:19,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-27 23:36:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2024-11-27 23:36:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:36:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2024-11-27 23:36:19,943 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 64 [2024-11-27 23:36:19,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:36:19,943 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2024-11-27 23:36:19,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 38 states have internal predecessors, (100), 13 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2024-11-27 23:36:19,944 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2024-11-27 23:36:19,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 23:36:19,945 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:36:19,945 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:36:19,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 23:36:20,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 23:36:20,149 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:36:20,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:36:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2099287496, now seen corresponding path program 9 times [2024-11-27 23:36:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:36:20,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785511988] [2024-11-27 23:36:20,149 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:36:20,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:36:20,204 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-27 23:36:20,204 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:36:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 81 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-27 23:36:20,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:36:20,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785511988] [2024-11-27 23:36:20,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785511988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:36:20,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103669974] [2024-11-27 23:36:20,907 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:36:20,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:36:20,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:36:20,910 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:36:20,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:36:21,031 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-27 23:36:21,031 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:36:21,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 23:36:21,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:36:21,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:36:21,770 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 23:36:21,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-27 23:36:22,143 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 28 treesize of output 10 [2024-11-27 23:36:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 33 proven. 81 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:36:22,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:36:46,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103669974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:36:46,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:36:46,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2024-11-27 23:36:46,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873524378] [2024-11-27 23:36:46,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:36:46,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 23:36:46,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:36:46,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 23:36:46,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=981, Unknown=6, NotChecked=0, Total=1122 [2024-11-27 23:36:46,589 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 32 states, 32 states have (on average 2.46875) internal successors, (79), 28 states have internal predecessors, (79), 11 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-27 23:36:50,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:36:54,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:36:58,901 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] [2024-11-27 23:36:59,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:36:59,479 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2024-11-27 23:36:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:36:59,480 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.46875) internal successors, (79), 28 states have internal predecessors, (79), 11 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) Word has length 72 [2024-11-27 23:36:59,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:36:59,480 INFO L225 Difference]: With dead ends: 78 [2024-11-27 23:36:59,480 INFO L226 Difference]: Without dead ends: 76 [2024-11-27 23:36:59,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 73 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=239, Invalid=1561, Unknown=6, NotChecked=0, Total=1806 [2024-11-27 23:36:59,482 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 95 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:36:59,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 340 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 626 Invalid, 3 Unknown, 0 Unchecked, 12.6s Time] [2024-11-27 23:36:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-27 23:36:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2024-11-27 23:36:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:36:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2024-11-27 23:36:59,495 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 72 [2024-11-27 23:36:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:36:59,495 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2024-11-27 23:36:59,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.46875) internal successors, (79), 28 states have internal predecessors, (79), 11 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-27 23:36:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2024-11-27 23:36:59,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 23:36:59,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:36:59,497 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:36:59,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:36:59,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:36:59,697 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:36:59,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:36:59,698 INFO L85 PathProgramCache]: Analyzing trace with hash 883710286, now seen corresponding path program 10 times [2024-11-27 23:36:59,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:36:59,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64516987] [2024-11-27 23:36:59,698 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:36:59,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:36:59,735 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:36:59,735 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 18 proven. 93 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-27 23:37:00,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:00,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64516987] [2024-11-27 23:37:00,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64516987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:37:00,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455650931] [2024-11-27 23:37:00,382 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:37:00,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:00,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:37:00,384 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:37:00,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:37:00,478 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:37:00,478 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:00,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-27 23:37:00,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:37:01,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:37:01,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:37:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 18 proven. 93 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-27 23:37:01,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:37:01,839 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 19 treesize of output 17 [2024-11-27 23:37:01,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:37:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 18 proven. 93 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-27 23:37:02,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455650931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:37:02,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:37:02,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 19] total 36 [2024-11-27 23:37:02,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963334195] [2024-11-27 23:37:02,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:37:02,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-27 23:37:02,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:02,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-27 23:37:02,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 23:37:02,061 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 36 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 32 states have internal predecessors, (89), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-27 23:37:03,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:03,270 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2024-11-27 23:37:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:37:03,271 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 32 states have internal predecessors, (89), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) Word has length 76 [2024-11-27 23:37:03,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:03,272 INFO L225 Difference]: With dead ends: 112 [2024-11-27 23:37:03,272 INFO L226 Difference]: Without dead ends: 110 [2024-11-27 23:37:03,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 128 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=233, Invalid=1659, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 23:37:03,274 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 145 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:03,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 471 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:37:03,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-27 23:37:03,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 78. [2024-11-27 23:37:03,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-27 23:37:03,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2024-11-27 23:37:03,296 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 76 [2024-11-27 23:37:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:03,296 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2024-11-27 23:37:03,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 32 states have internal predecessors, (89), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-27 23:37:03,297 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2024-11-27 23:37:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-27 23:37:03,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:03,297 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:03,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 23:37:03,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:03,498 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:03,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash -234952236, now seen corresponding path program 11 times [2024-11-27 23:37:03,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:03,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246940653] [2024-11-27 23:37:03,499 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:37:03,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:03,536 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-27 23:37:03,536 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-27 23:37:03,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:03,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246940653] [2024-11-27 23:37:03,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246940653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:37:03,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520753581] [2024-11-27 23:37:03,783 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:37:03,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:03,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:37:03,785 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:37:03,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:37:03,887 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-27 23:37:03,887 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:03,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 23:37:03,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:37:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-27 23:37:04,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:37:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-27 23:37:04,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520753581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:37:04,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:37:04,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2024-11-27 23:37:04,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339436344] [2024-11-27 23:37:04,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:37:04,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 23:37:04,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:04,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 23:37:04,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:37:04,474 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-27 23:37:04,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:04,770 INFO L93 Difference]: Finished difference Result 117 states and 123 transitions. [2024-11-27 23:37:04,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:37:04,771 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 80 [2024-11-27 23:37:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:04,772 INFO L225 Difference]: With dead ends: 117 [2024-11-27 23:37:04,772 INFO L226 Difference]: Without dead ends: 89 [2024-11-27 23:37:04,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 142 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:37:04,773 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 77 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:04,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 151 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:37:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-27 23:37:04,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 73. [2024-11-27 23:37:04,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-27 23:37:04,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2024-11-27 23:37:04,787 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 80 [2024-11-27 23:37:04,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:04,788 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2024-11-27 23:37:04,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-27 23:37:04,788 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2024-11-27 23:37:04,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-27 23:37:04,789 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:04,789 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:04,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 23:37:04,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:04,990 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:04,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:04,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1336910811, now seen corresponding path program 12 times [2024-11-27 23:37:04,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:04,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119295653] [2024-11-27 23:37:04,990 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:37:04,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:05,032 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-27 23:37:05,032 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 18 proven. 120 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-27 23:37:05,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:05,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119295653] [2024-11-27 23:37:05,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119295653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:37:05,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141306095] [2024-11-27 23:37:05,813 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:37:05,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:05,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:37:05,817 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:37:05,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:37:05,954 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-27 23:37:05,954 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:05,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-27 23:37:05,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:37:06,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:37:06,532 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 38 treesize of output 16 [2024-11-27 23:37:06,911 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 28 treesize of output 10 [2024-11-27 23:37:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 40 proven. 120 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-27 23:37:06,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:37:11,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141306095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:37:11,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:37:11,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 32 [2024-11-27 23:37:11,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457061114] [2024-11-27 23:37:11,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:37:11,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 23:37:11,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:11,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 23:37:11,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1042, Unknown=1, NotChecked=0, Total=1190 [2024-11-27 23:37:11,381 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 32 states, 32 states have (on average 2.4375) internal successors, (78), 29 states have internal predecessors, (78), 8 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-27 23:37:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:12,854 INFO L93 Difference]: Finished difference Result 134 states and 143 transitions. [2024-11-27 23:37:12,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-27 23:37:12,854 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 29 states have internal predecessors, (78), 8 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) Word has length 84 [2024-11-27 23:37:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:12,855 INFO L225 Difference]: With dead ends: 134 [2024-11-27 23:37:12,855 INFO L226 Difference]: Without dead ends: 132 [2024-11-27 23:37:12,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=404, Invalid=2565, Unknown=1, NotChecked=0, Total=2970 [2024-11-27 23:37:12,857 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 183 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:12,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 413 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:37:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-27 23:37:12,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 91. [2024-11-27 23:37:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 74 states have internal predecessors, (77), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 23:37:12,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2024-11-27 23:37:12,877 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 84 [2024-11-27 23:37:12,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:12,877 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2024-11-27 23:37:12,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 29 states have internal predecessors, (78), 8 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-27 23:37:12,877 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2024-11-27 23:37:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 23:37:12,878 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:12,878 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:12,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 23:37:13,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:13,079 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:13,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash -300931615, now seen corresponding path program 13 times [2024-11-27 23:37:13,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:13,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748265880] [2024-11-27 23:37:13,079 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:37:13,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:37:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 21 proven. 136 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-27 23:37:13,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:13,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748265880] [2024-11-27 23:37:13,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748265880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:37:13,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357574760] [2024-11-27 23:37:13,859 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:37:13,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:13,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:37:13,861 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:37:13,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 23:37:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:37:13,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-27 23:37:13,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:37:14,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:37:15,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:37:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 21 proven. 136 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-27 23:37:15,222 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:37:15,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:37:15,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:37:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 21 proven. 136 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-27 23:37:15,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357574760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:37:15,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:37:15,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 21] total 49 [2024-11-27 23:37:15,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248941253] [2024-11-27 23:37:15,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:37:15,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-27 23:37:15,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:15,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-27 23:37:15,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2139, Unknown=0, NotChecked=0, Total=2352 [2024-11-27 23:37:15,984 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 49 states, 48 states have (on average 2.6458333333333335) internal successors, (127), 43 states have internal predecessors, (127), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (22), 22 states have call predecessors, (22), 20 states have call successors, (22) [2024-11-27 23:37:17,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:17,220 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2024-11-27 23:37:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 23:37:17,221 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.6458333333333335) internal successors, (127), 43 states have internal predecessors, (127), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (22), 22 states have call predecessors, (22), 20 states have call successors, (22) Word has length 88 [2024-11-27 23:37:17,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:17,222 INFO L225 Difference]: With dead ends: 131 [2024-11-27 23:37:17,222 INFO L226 Difference]: Without dead ends: 129 [2024-11-27 23:37:17,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 142 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=341, Invalid=2965, Unknown=0, NotChecked=0, Total=3306 [2024-11-27 23:37:17,224 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 172 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:17,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 537 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:37:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-27 23:37:17,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 96. [2024-11-27 23:37:17,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 79 states have internal predecessors, (82), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 23:37:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2024-11-27 23:37:17,245 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 88 [2024-11-27 23:37:17,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:17,246 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2024-11-27 23:37:17,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.6458333333333335) internal successors, (127), 43 states have internal predecessors, (127), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (22), 22 states have call predecessors, (22), 20 states have call successors, (22) [2024-11-27 23:37:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2024-11-27 23:37:17,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-27 23:37:17,247 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:17,247 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:17,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-27 23:37:17,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:17,448 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:17,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:17,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2068564761, now seen corresponding path program 14 times [2024-11-27 23:37:17,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:17,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572434833] [2024-11-27 23:37:17,448 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:37:17,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:17,467 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:37:17,468 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 57 proven. 87 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-27 23:37:17,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:17,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572434833] [2024-11-27 23:37:17,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572434833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:37:17,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824220791] [2024-11-27 23:37:17,820 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:37:17,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:17,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:37:17,822 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:37:17,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:37:17,932 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:37:17,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:17,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 23:37:17,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:37:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-27 23:37:18,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:37:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-27 23:37:18,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824220791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:37:18,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:37:18,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-27 23:37:18,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200450861] [2024-11-27 23:37:18,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:37:18,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 23:37:18,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:18,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 23:37:18,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-27 23:37:18,611 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-27 23:37:18,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:18,917 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2024-11-27 23:37:18,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:37:18,917 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 92 [2024-11-27 23:37:18,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:18,919 INFO L225 Difference]: With dead ends: 136 [2024-11-27 23:37:18,919 INFO L226 Difference]: Without dead ends: 104 [2024-11-27 23:37:18,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 162 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:37:18,920 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 86 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:18,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 135 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:37:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-27 23:37:18,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2024-11-27 23:37:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 74 states have internal predecessors, (76), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 23:37:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2024-11-27 23:37:18,941 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 92 [2024-11-27 23:37:18,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:18,941 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2024-11-27 23:37:18,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-27 23:37:18,941 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2024-11-27 23:37:18,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-27 23:37:18,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:18,942 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 7, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:18,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-27 23:37:19,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:19,143 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:19,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:19,143 INFO L85 PathProgramCache]: Analyzing trace with hash -627112722, now seen corresponding path program 15 times [2024-11-27 23:37:19,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:19,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308927487] [2024-11-27 23:37:19,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:37:19,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:19,195 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-27 23:37:19,195 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 21 proven. 167 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-27 23:37:19,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:19,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308927487] [2024-11-27 23:37:19,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308927487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:37:19,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115412309] [2024-11-27 23:37:19,971 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:37:19,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:19,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:37:19,973 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:37:19,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 23:37:20,156 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-27 23:37:20,156 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:20,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-27 23:37:20,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:37:20,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:37:20,887 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 23:37:20,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-27 23:37:21,324 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 28 treesize of output 10 [2024-11-27 23:37:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 47 proven. 167 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-27 23:37:21,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:37:26,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115412309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:37:26,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:37:26,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 40 [2024-11-27 23:37:26,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743558778] [2024-11-27 23:37:26,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:37:26,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-27 23:37:26,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:26,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-27 23:37:26,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1547, Unknown=1, NotChecked=0, Total=1722 [2024-11-27 23:37:26,029 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 40 states, 40 states have (on average 2.675) internal successors, (107), 36 states have internal predecessors, (107), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 17 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-27 23:37:27,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:27,093 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2024-11-27 23:37:27,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 23:37:27,094 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.675) internal successors, (107), 36 states have internal predecessors, (107), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 17 states have call predecessors, (17), 15 states have call successors, (17) Word has length 96 [2024-11-27 23:37:27,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:27,095 INFO L225 Difference]: With dead ends: 112 [2024-11-27 23:37:27,095 INFO L226 Difference]: Without dead ends: 110 [2024-11-27 23:37:27,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 99 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=310, Invalid=2445, Unknown=1, NotChecked=0, Total=2756 [2024-11-27 23:37:27,096 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 86 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:27,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 668 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:37:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-27 23:37:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2024-11-27 23:37:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 23:37:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2024-11-27 23:37:27,116 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 96 [2024-11-27 23:37:27,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:27,117 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2024-11-27 23:37:27,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.675) internal successors, (107), 36 states have internal predecessors, (107), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 17 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-27 23:37:27,117 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2024-11-27 23:37:27,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-27 23:37:27,118 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:27,118 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:27,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 23:37:27,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:27,319 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:27,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:27,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1049442956, now seen corresponding path program 16 times [2024-11-27 23:37:27,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:27,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132656362] [2024-11-27 23:37:27,319 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:37:27,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:27,348 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:37:27,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 24 proven. 187 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-27 23:37:28,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:28,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132656362] [2024-11-27 23:37:28,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132656362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:37:28,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329932106] [2024-11-27 23:37:28,165 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:37:28,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:28,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:37:28,167 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:37:28,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 23:37:28,295 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:37:28,296 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:28,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-27 23:37:28,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:37:29,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:37:29,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:37:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 24 proven. 187 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-27 23:37:29,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:37:30,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:37:30,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:37:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 24 proven. 187 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-27 23:37:30,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329932106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:37:30,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:37:30,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 23] total 44 [2024-11-27 23:37:30,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060563892] [2024-11-27 23:37:30,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:37:30,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-27 23:37:30,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:30,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-27 23:37:30,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1723, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 23:37:30,317 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 44 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 16 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-27 23:37:31,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:31,688 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2024-11-27 23:37:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 23:37:31,689 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 16 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) Word has length 100 [2024-11-27 23:37:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:31,690 INFO L225 Difference]: With dead ends: 144 [2024-11-27 23:37:31,690 INFO L226 Difference]: Without dead ends: 142 [2024-11-27 23:37:31,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 170 SyntacticMatches, 10 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=291, Invalid=2571, Unknown=0, NotChecked=0, Total=2862 [2024-11-27 23:37:31,691 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 167 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:31,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 751 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:37:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-27 23:37:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 102. [2024-11-27 23:37:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-27 23:37:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2024-11-27 23:37:31,716 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 100 [2024-11-27 23:37:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:31,717 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2024-11-27 23:37:31,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 16 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-27 23:37:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2024-11-27 23:37:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-27 23:37:31,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:31,718 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:31,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-27 23:37:31,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:31,922 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:31,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1614359814, now seen corresponding path program 17 times [2024-11-27 23:37:31,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:31,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132506545] [2024-11-27 23:37:31,922 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:37:31,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:31,961 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-27 23:37:31,961 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 23:37:32,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:32,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132506545] [2024-11-27 23:37:32,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132506545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:37:32,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57574330] [2024-11-27 23:37:32,376 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:37:32,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:32,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:37:32,378 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:37:32,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:37:32,531 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-27 23:37:32,532 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:32,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 23:37:32,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:37:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 23:37:32,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:37:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 23:37:33,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57574330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:37:33,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:37:33,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2024-11-27 23:37:33,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790346689] [2024-11-27 23:37:33,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:37:33,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 23:37:33,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:33,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 23:37:33,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:37:33,338 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 27 states, 27 states have (on average 3.4074074074074074) internal successors, (92), 27 states have internal predecessors, (92), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-27 23:37:33,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:33,635 INFO L93 Difference]: Finished difference Result 149 states and 155 transitions. [2024-11-27 23:37:33,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:37:33,635 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.4074074074074074) internal successors, (92), 27 states have internal predecessors, (92), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 104 [2024-11-27 23:37:33,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:33,636 INFO L225 Difference]: With dead ends: 149 [2024-11-27 23:37:33,636 INFO L226 Difference]: Without dead ends: 113 [2024-11-27 23:37:33,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 184 SyntacticMatches, 16 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=311, Invalid=879, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 23:37:33,637 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 137 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:33,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 171 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:37:33,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-27 23:37:33,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2024-11-27 23:37:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-27 23:37:33,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2024-11-27 23:37:33,661 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 104 [2024-11-27 23:37:33,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:33,662 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2024-11-27 23:37:33,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.4074074074074074) internal successors, (92), 27 states have internal predecessors, (92), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-27 23:37:33,662 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2024-11-27 23:37:33,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-27 23:37:33,663 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:33,663 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:33,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 23:37:33,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 23:37:33,867 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:33,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:33,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2007860991, now seen corresponding path program 18 times [2024-11-27 23:37:33,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:33,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384226279] [2024-11-27 23:37:33,867 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:37:33,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:33,938 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-27 23:37:33,938 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 24 proven. 222 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-27 23:37:34,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:34,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384226279] [2024-11-27 23:37:34,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384226279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:37:34,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880860278] [2024-11-27 23:37:34,886 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:37:34,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:34,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:37:34,888 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:37:34,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 23:37:35,041 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-27 23:37:35,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:37:35,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-27 23:37:35,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:37:35,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:37:35,882 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 23:37:35,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-27 23:37:36,489 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 28 treesize of output 10 [2024-11-27 23:37:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 54 proven. 222 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-27 23:37:36,531 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:09,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880860278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:09,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:38:09,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 44 [2024-11-27 23:38:09,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11093651] [2024-11-27 23:38:09,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:09,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-27 23:38:09,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:09,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-27 23:38:09,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1870, Unknown=8, NotChecked=0, Total=2070 [2024-11-27 23:38:09,081 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 44 states, 44 states have (on average 2.75) internal successors, (121), 40 states have internal predecessors, (121), 17 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (19), 19 states have call predecessors, (19), 17 states have call successors, (19) [2024-11-27 23:38:10,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:10,366 INFO L93 Difference]: Finished difference Result 114 states and 117 transitions. [2024-11-27 23:38:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 23:38:10,367 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 40 states have internal predecessors, (121), 17 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (19), 19 states have call predecessors, (19), 17 states have call successors, (19) Word has length 108 [2024-11-27 23:38:10,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:10,368 INFO L225 Difference]: With dead ends: 114 [2024-11-27 23:38:10,368 INFO L226 Difference]: Without dead ends: 112 [2024-11-27 23:38:10,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 112 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=344, Invalid=2954, Unknown=8, NotChecked=0, Total=3306 [2024-11-27 23:38:10,370 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 154 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:10,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 613 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:38:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-27 23:38:10,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2024-11-27 23:38:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-27 23:38:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2024-11-27 23:38:10,397 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 108 [2024-11-27 23:38:10,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:10,398 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2024-11-27 23:38:10,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 40 states have internal predecessors, (121), 17 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (19), 19 states have call predecessors, (19), 17 states have call successors, (19) [2024-11-27 23:38:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2024-11-27 23:38:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-27 23:38:10,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:10,399 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:10,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-27 23:38:10,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-27 23:38:10,599 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:10,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:10,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1051199481, now seen corresponding path program 19 times [2024-11-27 23:38:10,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:10,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713593890] [2024-11-27 23:38:10,600 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:38:10,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 27 proven. 246 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-27 23:38:11,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:11,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713593890] [2024-11-27 23:38:11,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713593890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:11,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105372989] [2024-11-27 23:38:11,616 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:38:11,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:11,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:11,618 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:11,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 23:38:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:11,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-27 23:38:11,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:12,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:38:13,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:38:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 27 proven. 246 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-27 23:38:13,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:14,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:38:14,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:38:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 27 proven. 246 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-27 23:38:14,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105372989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:14,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:14,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 25] total 49 [2024-11-27 23:38:14,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355943332] [2024-11-27 23:38:14,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:14,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-27 23:38:14,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:14,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-27 23:38:14,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2161, Unknown=0, NotChecked=0, Total=2352 [2024-11-27 23:38:14,286 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand has 49 states, 48 states have (on average 2.8333333333333335) internal successors, (136), 45 states have internal predecessors, (136), 18 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-27 23:38:15,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:15,828 INFO L93 Difference]: Finished difference Result 160 states and 166 transitions. [2024-11-27 23:38:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 23:38:15,829 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.8333333333333335) internal successors, (136), 45 states have internal predecessors, (136), 18 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) Word has length 112 [2024-11-27 23:38:15,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:15,830 INFO L225 Difference]: With dead ends: 160 [2024-11-27 23:38:15,830 INFO L226 Difference]: Without dead ends: 158 [2024-11-27 23:38:15,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 191 SyntacticMatches, 10 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=326, Invalid=3214, Unknown=0, NotChecked=0, Total=3540 [2024-11-27 23:38:15,831 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 261 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:15,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 711 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:38:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-27 23:38:15,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 114. [2024-11-27 23:38:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 23:38:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 119 transitions. [2024-11-27 23:38:15,853 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 119 transitions. Word has length 112 [2024-11-27 23:38:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:15,854 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 119 transitions. [2024-11-27 23:38:15,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.8333333333333335) internal successors, (136), 45 states have internal predecessors, (136), 18 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-27 23:38:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 119 transitions. [2024-11-27 23:38:15,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 23:38:15,855 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:15,855 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:15,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 23:38:16,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-27 23:38:16,060 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:16,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:16,060 INFO L85 PathProgramCache]: Analyzing trace with hash -304446451, now seen corresponding path program 20 times [2024-11-27 23:38:16,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:16,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279253870] [2024-11-27 23:38:16,060 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:38:16,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:16,077 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:38:16,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 107 proven. 149 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 23:38:16,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:16,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279253870] [2024-11-27 23:38:16,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279253870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:16,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265110459] [2024-11-27 23:38:16,602 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:38:16,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:16,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:16,606 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:16,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 23:38:16,753 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:38:16,753 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:16,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 23:38:16,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 23:38:17,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 23:38:17,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265110459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:17,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:17,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-27 23:38:17,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706678285] [2024-11-27 23:38:17,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:17,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 23:38:17,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:17,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 23:38:17,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:38:17,664 INFO L87 Difference]: Start difference. First operand 114 states and 119 transitions. Second operand has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 10 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-27 23:38:18,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:18,024 INFO L93 Difference]: Finished difference Result 165 states and 171 transitions. [2024-11-27 23:38:18,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:38:18,024 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 10 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) Word has length 116 [2024-11-27 23:38:18,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:18,026 INFO L225 Difference]: With dead ends: 165 [2024-11-27 23:38:18,026 INFO L226 Difference]: Without dead ends: 125 [2024-11-27 23:38:18,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 204 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 23:38:18,027 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 114 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:18,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 188 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:38:18,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-27 23:38:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109. [2024-11-27 23:38:18,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 23:38:18,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2024-11-27 23:38:18,051 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 116 [2024-11-27 23:38:18,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:18,051 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2024-11-27 23:38:18,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 10 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-27 23:38:18,051 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2024-11-27 23:38:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-27 23:38:18,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:18,052 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:18,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-27 23:38:18,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 23:38:18,252 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:18,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:18,252 INFO L85 PathProgramCache]: Analyzing trace with hash 762167316, now seen corresponding path program 21 times [2024-11-27 23:38:18,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:18,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597773693] [2024-11-27 23:38:18,253 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:38:18,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:18,302 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-27 23:38:18,302 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 27 proven. 285 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-11-27 23:38:19,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:19,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597773693] [2024-11-27 23:38:19,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597773693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:19,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103644451] [2024-11-27 23:38:19,347 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:38:19,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:19,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:19,349 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:19,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 23:38:19,705 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-27 23:38:19,705 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:19,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-27 23:38:19,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:20,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:38:20,663 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 23:38:20,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-27 23:38:21,477 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 28 treesize of output 10 [2024-11-27 23:38:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 61 proven. 285 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-27 23:38:21,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:38,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103644451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:38,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:38:38,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 49 [2024-11-27 23:38:38,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424513062] [2024-11-27 23:38:38,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:38,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-27 23:38:38,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:38,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-27 23:38:38,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2422, Unknown=4, NotChecked=0, Total=2652 [2024-11-27 23:38:38,159 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 45 states have internal predecessors, (135), 19 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) [2024-11-27 23:38:40,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:40,444 INFO L93 Difference]: Finished difference Result 126 states and 129 transitions. [2024-11-27 23:38:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-27 23:38:40,445 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 45 states have internal predecessors, (135), 19 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) Word has length 120 [2024-11-27 23:38:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:40,446 INFO L225 Difference]: With dead ends: 126 [2024-11-27 23:38:40,446 INFO L226 Difference]: Without dead ends: 124 [2024-11-27 23:38:40,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 123 SyntacticMatches, 10 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1344 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=414, Invalid=3872, Unknown=4, NotChecked=0, Total=4290 [2024-11-27 23:38:40,448 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 134 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:40,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 858 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:38:40,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-27 23:38:40,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 117. [2024-11-27 23:38:40,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 23:38:40,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2024-11-27 23:38:40,472 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 120 [2024-11-27 23:38:40,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:40,473 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2024-11-27 23:38:40,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 45 states have internal predecessors, (135), 19 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) [2024-11-27 23:38:40,473 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2024-11-27 23:38:40,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 23:38:40,474 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:40,474 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:40,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 23:38:40,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 23:38:40,675 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:40,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1250131354, now seen corresponding path program 22 times [2024-11-27 23:38:40,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:40,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955276774] [2024-11-27 23:38:40,675 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:38:40,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:40,725 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:38:40,725 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 30 proven. 313 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-11-27 23:38:42,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:42,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955276774] [2024-11-27 23:38:42,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955276774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:42,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462390341] [2024-11-27 23:38:42,189 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:38:42,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:42,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:42,192 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:42,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 23:38:42,364 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:38:42,364 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:42,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-27 23:38:42,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:43,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:38:44,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:38:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 30 proven. 313 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-11-27 23:38:44,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:45,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:38:45,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:38:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 30 proven. 313 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-11-27 23:38:45,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462390341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:45,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:45,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28, 27] total 52 [2024-11-27 23:38:45,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977326306] [2024-11-27 23:38:45,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:45,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-27 23:38:45,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:45,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-27 23:38:45,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2449, Unknown=0, NotChecked=0, Total=2652 [2024-11-27 23:38:45,617 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand has 52 states, 51 states have (on average 2.843137254901961) internal successors, (145), 48 states have internal predecessors, (145), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-27 23:38:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:47,798 INFO L93 Difference]: Finished difference Result 176 states and 182 transitions. [2024-11-27 23:38:47,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-27 23:38:47,799 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.843137254901961) internal successors, (145), 48 states have internal predecessors, (145), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) Word has length 124 [2024-11-27 23:38:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:47,800 INFO L225 Difference]: With dead ends: 176 [2024-11-27 23:38:47,800 INFO L226 Difference]: Without dead ends: 174 [2024-11-27 23:38:47,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 212 SyntacticMatches, 12 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=349, Invalid=3683, Unknown=0, NotChecked=0, Total=4032 [2024-11-27 23:38:47,800 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 172 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:47,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1167 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:38:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-27 23:38:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 126. [2024-11-27 23:38:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-27 23:38:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2024-11-27 23:38:47,836 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 124 [2024-11-27 23:38:47,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:47,836 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 131 transitions. [2024-11-27 23:38:47,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.843137254901961) internal successors, (145), 48 states have internal predecessors, (145), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-27 23:38:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 131 transitions. [2024-11-27 23:38:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-27 23:38:47,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:47,838 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:47,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-27 23:38:48,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-27 23:38:48,038 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:48,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1137903648, now seen corresponding path program 23 times [2024-11-27 23:38:48,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:48,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049092044] [2024-11-27 23:38:48,039 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:38:48,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:48,083 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:38:48,083 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 171 proven. 153 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-27 23:38:48,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:48,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049092044] [2024-11-27 23:38:48,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049092044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:48,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408663275] [2024-11-27 23:38:48,699 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:38:48,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:48,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:48,701 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:48,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 23:38:48,875 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:38:48,875 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:48,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 23:38:48,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 171 proven. 153 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-27 23:38:49,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 171 proven. 153 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-27 23:38:49,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408663275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:49,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:49,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 33 [2024-11-27 23:38:49,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114914365] [2024-11-27 23:38:49,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:49,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 23:38:49,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:49,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 23:38:49,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 23:38:49,898 INFO L87 Difference]: Start difference. First operand 126 states and 131 transitions. Second operand has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 33 states have internal predecessors, (114), 10 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-27 23:38:50,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:50,294 INFO L93 Difference]: Finished difference Result 181 states and 187 transitions. [2024-11-27 23:38:50,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:38:50,295 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 33 states have internal predecessors, (114), 10 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) Word has length 128 [2024-11-27 23:38:50,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:50,296 INFO L225 Difference]: With dead ends: 181 [2024-11-27 23:38:50,296 INFO L226 Difference]: Without dead ends: 137 [2024-11-27 23:38:50,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 226 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=458, Invalid=1348, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 23:38:50,297 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 147 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:50,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 161 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:38:50,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-27 23:38:50,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 121. [2024-11-27 23:38:50,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-27 23:38:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2024-11-27 23:38:50,333 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 128 [2024-11-27 23:38:50,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:50,333 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2024-11-27 23:38:50,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 33 states have internal predecessors, (114), 10 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-27 23:38:50,333 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2024-11-27 23:38:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-27 23:38:50,334 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:50,334 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:50,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-27 23:38:50,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 23:38:50,535 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:50,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:50,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1194026457, now seen corresponding path program 24 times [2024-11-27 23:38:50,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:50,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639594267] [2024-11-27 23:38:50,536 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:38:50,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:50,601 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-27 23:38:50,601 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 30 proven. 356 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-27 23:38:51,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:51,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639594267] [2024-11-27 23:38:51,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639594267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:51,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820414849] [2024-11-27 23:38:51,874 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:38:51,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:51,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:51,876 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:51,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-27 23:38:52,192 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-27 23:38:52,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:52,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-27 23:38:52,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:52,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:38:53,274 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 38 treesize of output 16 [2024-11-27 23:38:54,184 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 28 treesize of output 10 [2024-11-27 23:38:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 68 proven. 356 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-11-27 23:38:54,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:18,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820414849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:18,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:39:18,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 30] total 54 [2024-11-27 23:39:18,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392018221] [2024-11-27 23:39:18,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:18,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-27 23:39:18,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:18,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-27 23:39:18,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=2925, Unknown=5, NotChecked=0, Total=3192 [2024-11-27 23:39:18,982 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand has 54 states, 54 states have (on average 2.759259259259259) internal successors, (149), 50 states have internal predecessors, (149), 21 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-27 23:39:22,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:22,065 INFO L93 Difference]: Finished difference Result 198 states and 207 transitions. [2024-11-27 23:39:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-27 23:39:22,065 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.759259259259259) internal successors, (149), 50 states have internal predecessors, (149), 21 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) Word has length 132 [2024-11-27 23:39:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:22,066 INFO L225 Difference]: With dead ends: 198 [2024-11-27 23:39:22,067 INFO L226 Difference]: Without dead ends: 196 [2024-11-27 23:39:22,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 134 SyntacticMatches, 12 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2339 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=705, Invalid=6600, Unknown=5, NotChecked=0, Total=7310 [2024-11-27 23:39:22,068 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 381 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:22,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 944 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 23:39:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-27 23:39:22,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 139. [2024-11-27 23:39:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 113 states have (on average 1.0353982300884956) internal successors, (117), 114 states have internal predecessors, (117), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 23:39:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2024-11-27 23:39:22,112 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 132 [2024-11-27 23:39:22,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:22,112 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2024-11-27 23:39:22,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.759259259259259) internal successors, (149), 50 states have internal predecessors, (149), 21 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-27 23:39:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2024-11-27 23:39:22,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-27 23:39:22,114 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:22,114 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:22,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-27 23:39:22,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-27 23:39:22,315 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:22,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:22,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1275521491, now seen corresponding path program 25 times [2024-11-27 23:39:22,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:22,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016409663] [2024-11-27 23:39:22,315 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:39:22,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 33 proven. 388 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-27 23:39:23,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:23,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016409663] [2024-11-27 23:39:23,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016409663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:23,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553029262] [2024-11-27 23:39:23,769 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:39:23,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:23,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:23,772 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:23,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-27 23:39:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:23,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-27 23:39:23,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:25,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:39:26,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:39:26,340 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 33 proven. 388 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-27 23:39:26,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:26,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:39:26,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:39:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 33 proven. 388 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-27 23:39:27,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553029262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:39:27,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:39:27,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30, 29] total 59 [2024-11-27 23:39:27,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207117892] [2024-11-27 23:39:27,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:27,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-27 23:39:27,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:27,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-27 23:39:27,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=3188, Unknown=0, NotChecked=0, Total=3422 [2024-11-27 23:39:27,193 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand has 59 states, 57 states have (on average 2.912280701754386) internal successors, (166), 54 states have internal predecessors, (166), 23 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 23 states have call successors, (24) [2024-11-27 23:39:30,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:30,523 INFO L93 Difference]: Finished difference Result 195 states and 203 transitions. [2024-11-27 23:39:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-27 23:39:30,524 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 57 states have (on average 2.912280701754386) internal successors, (166), 54 states have internal predecessors, (166), 23 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 23 states have call successors, (24) Word has length 136 [2024-11-27 23:39:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:30,526 INFO L225 Difference]: With dead ends: 195 [2024-11-27 23:39:30,526 INFO L226 Difference]: Without dead ends: 193 [2024-11-27 23:39:30,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 232 SyntacticMatches, 12 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=395, Invalid=4717, Unknown=0, NotChecked=0, Total=5112 [2024-11-27 23:39:30,528 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 269 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:30,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1255 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2692 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 23:39:30,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-27 23:39:30,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 144. [2024-11-27 23:39:30,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 119 states have internal predecessors, (122), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 23:39:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2024-11-27 23:39:30,604 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 136 [2024-11-27 23:39:30,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:30,605 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2024-11-27 23:39:30,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 57 states have (on average 2.912280701754386) internal successors, (166), 54 states have internal predecessors, (166), 23 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 23 states have call successors, (24) [2024-11-27 23:39:30,605 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2024-11-27 23:39:30,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-27 23:39:30,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:30,606 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:30,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-27 23:39:30,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-27 23:39:30,807 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:30,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:30,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1356078899, now seen corresponding path program 26 times [2024-11-27 23:39:30,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:30,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307558787] [2024-11-27 23:39:30,808 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:39:30,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:30,839 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:39:30,839 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 173 proven. 227 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-27 23:39:31,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:31,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307558787] [2024-11-27 23:39:31,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307558787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:31,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923133510] [2024-11-27 23:39:31,453 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:39:31,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:31,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:31,455 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:31,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-27 23:39:31,619 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:39:31,619 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:31,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 23:39:31,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 210 proven. 190 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-27 23:39:32,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 210 proven. 190 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-27 23:39:32,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923133510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:39:32,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:39:32,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-11-27 23:39:32,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644711793] [2024-11-27 23:39:32,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:32,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 23:39:32,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:32,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 23:39:32,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:39:32,771 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand has 38 states, 38 states have (on average 3.526315789473684) internal successors, (134), 38 states have internal predecessors, (134), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-27 23:39:33,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:33,269 INFO L93 Difference]: Finished difference Result 200 states and 208 transitions. [2024-11-27 23:39:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 23:39:33,270 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.526315789473684) internal successors, (134), 38 states have internal predecessors, (134), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 140 [2024-11-27 23:39:33,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:33,271 INFO L225 Difference]: With dead ends: 200 [2024-11-27 23:39:33,271 INFO L226 Difference]: Without dead ends: 152 [2024-11-27 23:39:33,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 246 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 23:39:33,273 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 131 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:33,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 188 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:39:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-27 23:39:33,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 139. [2024-11-27 23:39:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 114 states have internal predecessors, (116), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 23:39:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 146 transitions. [2024-11-27 23:39:33,314 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 146 transitions. Word has length 140 [2024-11-27 23:39:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:33,314 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 146 transitions. [2024-11-27 23:39:33,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.526315789473684) internal successors, (134), 38 states have internal predecessors, (134), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-27 23:39:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 146 transitions. [2024-11-27 23:39:33,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-27 23:39:33,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:33,315 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 11, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:33,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-27 23:39:33,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:33,515 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:33,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:33,516 INFO L85 PathProgramCache]: Analyzing trace with hash -475347142, now seen corresponding path program 27 times [2024-11-27 23:39:33,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:33,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394288001] [2024-11-27 23:39:33,516 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:39:33,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:33,596 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-27 23:39:33,597 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 33 proven. 435 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-27 23:39:34,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:34,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394288001] [2024-11-27 23:39:34,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394288001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:34,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509026174] [2024-11-27 23:39:34,903 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:39:34,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:34,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:34,905 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:34,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-27 23:39:35,356 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-27 23:39:35,356 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:35,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-27 23:39:35,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:36,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:39:36,850 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 23:39:36,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-27 23:39:38,042 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 28 treesize of output 10 [2024-11-27 23:39:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 75 proven. 435 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-27 23:39:38,124 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:40:03,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509026174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:40:03,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:40:03,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 57 [2024-11-27 23:40:03,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125018260] [2024-11-27 23:40:03,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:40:03,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-27 23:40:03,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:03,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-27 23:40:03,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=3272, Unknown=4, NotChecked=0, Total=3540 [2024-11-27 23:40:03,390 INFO L87 Difference]: Start difference. First operand 139 states and 146 transitions. Second operand has 57 states, 57 states have (on average 2.8596491228070176) internal successors, (163), 53 states have internal predecessors, (163), 23 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (25), 25 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-27 23:40:07,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:40:07,126 INFO L93 Difference]: Finished difference Result 160 states and 165 transitions. [2024-11-27 23:40:07,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-27 23:40:07,126 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.8596491228070176) internal successors, (163), 53 states have internal predecessors, (163), 23 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (25), 25 states have call predecessors, (25), 23 states have call successors, (25) Word has length 144 [2024-11-27 23:40:07,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:40:07,128 INFO L225 Difference]: With dead ends: 160 [2024-11-27 23:40:07,128 INFO L226 Difference]: Without dead ends: 158 [2024-11-27 23:40:07,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 149 SyntacticMatches, 12 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=484, Invalid=5212, Unknown=4, NotChecked=0, Total=5700 [2024-11-27 23:40:07,130 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 140 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:40:07,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1136 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 23:40:07,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-27 23:40:07,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2024-11-27 23:40:07,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-27 23:40:07,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 144 transitions. [2024-11-27 23:40:07,180 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 144 transitions. Word has length 144 [2024-11-27 23:40:07,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:40:07,180 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 144 transitions. [2024-11-27 23:40:07,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.8596491228070176) internal successors, (163), 53 states have internal predecessors, (163), 23 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (25), 25 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-27 23:40:07,181 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 144 transitions. [2024-11-27 23:40:07,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-27 23:40:07,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:40:07,182 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:40:07,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-27 23:40:07,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-27 23:40:07,383 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:40:07,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:07,383 INFO L85 PathProgramCache]: Analyzing trace with hash -17006144, now seen corresponding path program 28 times [2024-11-27 23:40:07,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:07,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604538553] [2024-11-27 23:40:07,384 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:40:07,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:07,457 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:40:07,457 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 36 proven. 471 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-27 23:40:09,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:09,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604538553] [2024-11-27 23:40:09,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604538553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:40:09,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084180947] [2024-11-27 23:40:09,093 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:40:09,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:09,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:40:09,095 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:40:09,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-27 23:40:09,334 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:40:09,334 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:09,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-27 23:40:09,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:40:10,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:40:12,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:40:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 36 proven. 471 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-27 23:40:12,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:40:12,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:40:12,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:40:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 36 proven. 471 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-27 23:40:13,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084180947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:40:13,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:40:13,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 32, 31] total 60 [2024-11-27 23:40:13,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775900149] [2024-11-27 23:40:13,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:40:13,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-27 23:40:13,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:13,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-27 23:40:13,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3303, Unknown=0, NotChecked=0, Total=3540 [2024-11-27 23:40:13,189 INFO L87 Difference]: Start difference. First operand 141 states and 144 transitions. Second operand has 60 states, 59 states have (on average 2.9322033898305087) internal successors, (173), 56 states have internal predecessors, (173), 24 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2024-11-27 23:40:15,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:40:15,980 INFO L93 Difference]: Finished difference Result 208 states and 214 transitions. [2024-11-27 23:40:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-27 23:40:15,980 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.9322033898305087) internal successors, (173), 56 states have internal predecessors, (173), 24 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) Word has length 148 [2024-11-27 23:40:15,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:40:15,982 INFO L225 Difference]: With dead ends: 208 [2024-11-27 23:40:15,982 INFO L226 Difference]: Without dead ends: 206 [2024-11-27 23:40:15,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 254 SyntacticMatches, 14 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=407, Invalid=4995, Unknown=0, NotChecked=0, Total=5402 [2024-11-27 23:40:15,983 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 239 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:40:15,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1298 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 23:40:15,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-27 23:40:16,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 150. [2024-11-27 23:40:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 124 states have (on average 1.0241935483870968) internal successors, (127), 124 states have internal predecessors, (127), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:40:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 155 transitions. [2024-11-27 23:40:16,069 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 155 transitions. Word has length 148 [2024-11-27 23:40:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:40:16,069 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 155 transitions. [2024-11-27 23:40:16,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.9322033898305087) internal successors, (173), 56 states have internal predecessors, (173), 24 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2024-11-27 23:40:16,070 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 155 transitions. [2024-11-27 23:40:16,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-27 23:40:16,071 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:40:16,071 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:40:16,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-27 23:40:16,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:16,275 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:40:16,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:16,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1312917830, now seen corresponding path program 29 times [2024-11-27 23:40:16,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:16,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90210207] [2024-11-27 23:40:16,275 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:40:16,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:16,329 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-27 23:40:16,330 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 253 proven. 231 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-27 23:40:16,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:16,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90210207] [2024-11-27 23:40:16,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90210207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:40:16,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897902824] [2024-11-27 23:40:16,991 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:40:16,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:16,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:40:16,993 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:40:16,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-27 23:40:17,232 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-27 23:40:17,232 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:17,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 23:40:17,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:40:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 253 proven. 231 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-27 23:40:18,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:40:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 253 proven. 231 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-27 23:40:18,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897902824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:40:18,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:40:18,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 39 [2024-11-27 23:40:18,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345682654] [2024-11-27 23:40:18,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:40:18,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-27 23:40:18,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:18,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-27 23:40:18,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 23:40:18,675 INFO L87 Difference]: Start difference. First operand 150 states and 155 transitions. Second operand has 39 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 39 states have internal predecessors, (136), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-27 23:40:19,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:40:19,259 INFO L93 Difference]: Finished difference Result 213 states and 219 transitions. [2024-11-27 23:40:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 23:40:19,260 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 39 states have internal predecessors, (136), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 152 [2024-11-27 23:40:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:40:19,261 INFO L225 Difference]: With dead ends: 213 [2024-11-27 23:40:19,261 INFO L226 Difference]: Without dead ends: 161 [2024-11-27 23:40:19,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 268 SyntacticMatches, 24 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=633, Invalid=1917, Unknown=0, NotChecked=0, Total=2550 [2024-11-27 23:40:19,262 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 153 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:40:19,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 226 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:40:19,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-27 23:40:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 145. [2024-11-27 23:40:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:40:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2024-11-27 23:40:19,313 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 152 [2024-11-27 23:40:19,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:40:19,313 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2024-11-27 23:40:19,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 39 states have internal predecessors, (136), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-27 23:40:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2024-11-27 23:40:19,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-27 23:40:19,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:40:19,315 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:40:19,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-27 23:40:19,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:19,516 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:40:19,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:19,516 INFO L85 PathProgramCache]: Analyzing trace with hash -514586803, now seen corresponding path program 30 times [2024-11-27 23:40:19,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:19,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17280633] [2024-11-27 23:40:19,516 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:40:19,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:19,609 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-27 23:40:19,609 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:21,212 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 36 proven. 522 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2024-11-27 23:40:21,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:21,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17280633] [2024-11-27 23:40:21,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17280633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:40:21,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609615619] [2024-11-27 23:40:21,212 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:40:21,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:21,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:40:21,214 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:40:21,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-27 23:40:21,690 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-27 23:40:21,691 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:21,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-27 23:40:21,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:40:22,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:40:23,131 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 23:40:23,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-27 23:40:24,278 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 28 treesize of output 10 [2024-11-27 23:40:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 88 proven. 540 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-27 23:40:24,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:40:49,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609615619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:40:49,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:40:49,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 60 [2024-11-27 23:40:49,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079489844] [2024-11-27 23:40:49,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:40:49,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-27 23:40:49,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:49,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-27 23:40:49,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=3509, Unknown=5, NotChecked=0, Total=3782 [2024-11-27 23:40:49,240 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand has 60 states, 60 states have (on average 2.95) internal successors, (177), 56 states have internal predecessors, (177), 25 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (27), 27 states have call predecessors, (27), 25 states have call successors, (27) [2024-11-27 23:40:52,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:40:52,188 INFO L93 Difference]: Finished difference Result 162 states and 165 transitions. [2024-11-27 23:40:52,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-27 23:40:52,189 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.95) internal successors, (177), 56 states have internal predecessors, (177), 25 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (27), 27 states have call predecessors, (27), 25 states have call successors, (27) Word has length 156 [2024-11-27 23:40:52,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:40:52,190 INFO L225 Difference]: With dead ends: 162 [2024-11-27 23:40:52,190 INFO L226 Difference]: Without dead ends: 160 [2024-11-27 23:40:52,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 165 SyntacticMatches, 12 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=484, Invalid=5517, Unknown=5, NotChecked=0, Total=6006 [2024-11-27 23:40:52,191 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 111 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:40:52,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1583 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-27 23:40:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-27 23:40:52,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 153. [2024-11-27 23:40:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:40:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2024-11-27 23:40:52,259 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 156 [2024-11-27 23:40:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:40:52,260 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2024-11-27 23:40:52,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.95) internal successors, (177), 56 states have internal predecessors, (177), 25 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (27), 27 states have call predecessors, (27), 25 states have call successors, (27) [2024-11-27 23:40:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2024-11-27 23:40:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-27 23:40:52,261 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:40:52,261 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:40:52,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-27 23:40:52,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:52,462 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:40:52,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:52,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2028896173, now seen corresponding path program 31 times [2024-11-27 23:40:52,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:52,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329829642] [2024-11-27 23:40:52,463 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:40:52,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:40:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 39 proven. 562 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2024-11-27 23:40:54,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:54,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329829642] [2024-11-27 23:40:54,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329829642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:40:54,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398247309] [2024-11-27 23:40:54,477 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:40:54,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:54,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:40:54,479 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:40:54,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-27 23:40:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:40:54,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-27 23:40:54,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:40:55,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:40:56,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:40:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 39 proven. 562 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2024-11-27 23:40:56,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:40:57,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:40:57,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:40:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 39 proven. 562 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2024-11-27 23:40:58,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398247309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:40:58,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:40:58,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 33] total 78 [2024-11-27 23:40:58,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682478250] [2024-11-27 23:40:58,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:40:58,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-27 23:40:58,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:58,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-27 23:40:58,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=5639, Unknown=0, NotChecked=0, Total=6006 [2024-11-27 23:40:58,656 INFO L87 Difference]: Start difference. First operand 153 states and 156 transitions. Second operand has 78 states, 77 states have (on average 3.038961038961039) internal successors, (234), 73 states have internal predecessors, (234), 26 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (28), 28 states have call predecessors, (28), 26 states have call successors, (28) [2024-11-27 23:41:02,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:41:02,543 INFO L93 Difference]: Finished difference Result 224 states and 230 transitions. [2024-11-27 23:41:02,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-27 23:41:02,544 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 3.038961038961039) internal successors, (234), 73 states have internal predecessors, (234), 26 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (28), 28 states have call predecessors, (28), 26 states have call successors, (28) Word has length 160 [2024-11-27 23:41:02,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:41:02,545 INFO L225 Difference]: With dead ends: 224 [2024-11-27 23:41:02,545 INFO L226 Difference]: Without dead ends: 222 [2024-11-27 23:41:02,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2517 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=578, Invalid=7978, Unknown=0, NotChecked=0, Total=8556 [2024-11-27 23:41:02,546 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 352 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 3738 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 3778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:41:02,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1656 Invalid, 3778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3738 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 23:41:02,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-27 23:41:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 162. [2024-11-27 23:41:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 134 states have (on average 1.0223880597014925) internal successors, (137), 134 states have internal predecessors, (137), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 23:41:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 167 transitions. [2024-11-27 23:41:02,617 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 167 transitions. Word has length 160 [2024-11-27 23:41:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:41:02,617 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 167 transitions. [2024-11-27 23:41:02,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 3.038961038961039) internal successors, (234), 73 states have internal predecessors, (234), 26 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (28), 28 states have call predecessors, (28), 26 states have call successors, (28) [2024-11-27 23:41:02,617 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 167 transitions. [2024-11-27 23:41:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-27 23:41:02,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:41:02,620 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:41:02,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-27 23:41:02,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-27 23:41:02,820 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:41:02,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:41:02,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1346435495, now seen corresponding path program 32 times [2024-11-27 23:41:02,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:41:02,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909935667] [2024-11-27 23:41:02,821 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:41:02,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:41:02,849 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:41:02,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:41:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 255 proven. 321 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-27 23:41:03,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:41:03,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909935667] [2024-11-27 23:41:03,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909935667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:41:03,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75581971] [2024-11-27 23:41:03,673 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:41:03,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:41:03,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:41:03,674 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:41:03,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-27 23:41:03,880 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:41:03,881 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:41:03,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 23:41:03,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:41:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 300 proven. 276 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-27 23:41:04,664 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:41:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 300 proven. 276 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-27 23:41:05,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75581971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:41:05,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:41:05,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-27 23:41:05,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205123687] [2024-11-27 23:41:05,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:41:05,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-27 23:41:05,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:41:05,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-27 23:41:05,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 23:41:05,297 INFO L87 Difference]: Start difference. First operand 162 states and 167 transitions. Second operand has 44 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-27 23:41:05,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:41:05,903 INFO L93 Difference]: Finished difference Result 229 states and 235 transitions. [2024-11-27 23:41:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-27 23:41:05,904 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 164 [2024-11-27 23:41:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:41:05,904 INFO L225 Difference]: With dead ends: 229 [2024-11-27 23:41:05,904 INFO L226 Difference]: Without dead ends: 173 [2024-11-27 23:41:05,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 288 SyntacticMatches, 25 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=747, Invalid=2333, Unknown=0, NotChecked=0, Total=3080 [2024-11-27 23:41:05,905 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 159 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:41:05,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 303 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:41:05,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-27 23:41:05,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 157. [2024-11-27 23:41:05,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 129 states have internal predecessors, (131), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 23:41:05,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2024-11-27 23:41:05,958 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 164 [2024-11-27 23:41:05,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:41:05,958 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2024-11-27 23:41:05,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-27 23:41:05,959 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2024-11-27 23:41:05,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-27 23:41:05,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:41:05,960 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 13, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:41:05,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-27 23:41:06,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:41:06,161 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:41:06,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:41:06,161 INFO L85 PathProgramCache]: Analyzing trace with hash 259267168, now seen corresponding path program 33 times [2024-11-27 23:41:06,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:41:06,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107187323] [2024-11-27 23:41:06,161 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:41:06,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:41:06,249 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-27 23:41:06,249 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:41:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 39 proven. 617 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-27 23:41:07,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:41:07,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107187323] [2024-11-27 23:41:07,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107187323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:41:07,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536659078] [2024-11-27 23:41:07,961 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:41:07,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:41:07,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:41:07,963 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:41:07,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-27 23:41:08,966 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-27 23:41:08,966 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:41:08,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-27 23:41:08,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:41:10,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:41:10,591 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 23:41:10,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-27 23:41:11,848 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 28 treesize of output 10 [2024-11-27 23:41:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 89 proven. 617 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2024-11-27 23:41:11,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:41:20,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536659078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:41:20,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:41:20,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 64 [2024-11-27 23:41:20,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67729692] [2024-11-27 23:41:20,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:41:20,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-27 23:41:20,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:41:20,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-27 23:41:20,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=4001, Unknown=2, NotChecked=0, Total=4290 [2024-11-27 23:41:20,958 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand has 64 states, 64 states have (on average 2.984375) internal successors, (191), 60 states have internal predecessors, (191), 27 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (29), 29 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-27 23:41:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:41:24,472 INFO L93 Difference]: Finished difference Result 174 states and 177 transitions. [2024-11-27 23:41:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-27 23:41:24,472 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.984375) internal successors, (191), 60 states have internal predecessors, (191), 27 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (29), 29 states have call predecessors, (29), 27 states have call successors, (29) Word has length 168 [2024-11-27 23:41:24,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:41:24,474 INFO L225 Difference]: With dead ends: 174 [2024-11-27 23:41:24,474 INFO L226 Difference]: Without dead ends: 172 [2024-11-27 23:41:24,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 177 SyntacticMatches, 14 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2231 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=519, Invalid=6285, Unknown=2, NotChecked=0, Total=6806 [2024-11-27 23:41:24,475 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 99 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:41:24,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1808 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-27 23:41:24,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-27 23:41:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 165. [2024-11-27 23:41:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 136 states have internal predecessors, (138), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 23:41:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 168 transitions. [2024-11-27 23:41:24,545 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 168 transitions. Word has length 168 [2024-11-27 23:41:24,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:41:24,546 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 168 transitions. [2024-11-27 23:41:24,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.984375) internal successors, (191), 60 states have internal predecessors, (191), 27 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (29), 29 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-27 23:41:24,546 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 168 transitions. [2024-11-27 23:41:24,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-27 23:41:24,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:41:24,547 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:41:24,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-27 23:41:24,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:41:24,750 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:41:24,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:41:24,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1308896794, now seen corresponding path program 34 times [2024-11-27 23:41:24,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:41:24,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197513727] [2024-11-27 23:41:24,751 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:41:24,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:41:24,816 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:41:24,816 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:41:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 42 proven. 661 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-27 23:41:26,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:41:26,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197513727] [2024-11-27 23:41:26,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197513727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:41:26,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375063755] [2024-11-27 23:41:26,601 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:41:26,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:41:26,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:41:26,603 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:41:26,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-27 23:41:26,853 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:41:26,853 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:41:26,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-27 23:41:26,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:41:28,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:41:30,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:41:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 42 proven. 661 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-27 23:41:30,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:41:31,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:41:31,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:41:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 42 proven. 661 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-27 23:41:31,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375063755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:41:31,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:41:31,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 36, 35] total 68 [2024-11-27 23:41:31,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701890258] [2024-11-27 23:41:31,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:41:31,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-27 23:41:31,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:41:31,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-27 23:41:31,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=4285, Unknown=0, NotChecked=0, Total=4556 [2024-11-27 23:41:31,616 INFO L87 Difference]: Start difference. First operand 165 states and 168 transitions. Second operand has 68 states, 67 states have (on average 3.0) internal successors, (201), 64 states have internal predecessors, (201), 28 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2024-11-27 23:41:36,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:41:36,358 INFO L93 Difference]: Finished difference Result 240 states and 246 transitions. [2024-11-27 23:41:36,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-27 23:41:36,358 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 3.0) internal successors, (201), 64 states have internal predecessors, (201), 28 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) Word has length 172 [2024-11-27 23:41:36,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:41:36,359 INFO L225 Difference]: With dead ends: 240 [2024-11-27 23:41:36,359 INFO L226 Difference]: Without dead ends: 238 [2024-11-27 23:41:36,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 296 SyntacticMatches, 16 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=465, Invalid=6507, Unknown=0, NotChecked=0, Total=6972 [2024-11-27 23:41:36,360 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 345 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 4270 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 4316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:41:36,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1897 Invalid, 4316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4270 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-27 23:41:36,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-27 23:41:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 174. [2024-11-27 23:41:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 144 states have (on average 1.0208333333333333) internal successors, (147), 144 states have internal predecessors, (147), 16 states have call successors, (16), 13 states have call predecessors, (16), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-27 23:41:36,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 179 transitions. [2024-11-27 23:41:36,418 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 179 transitions. Word has length 172 [2024-11-27 23:41:36,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:41:36,419 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 179 transitions. [2024-11-27 23:41:36,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 3.0) internal successors, (201), 64 states have internal predecessors, (201), 28 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2024-11-27 23:41:36,419 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 179 transitions. [2024-11-27 23:41:36,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-27 23:41:36,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:41:36,420 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:41:36,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-27 23:41:36,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-27 23:41:36,620 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:41:36,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:41:36,621 INFO L85 PathProgramCache]: Analyzing trace with hash -751806868, now seen corresponding path program 35 times [2024-11-27 23:41:36,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:41:36,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569492147] [2024-11-27 23:41:36,621 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:41:36,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:41:36,703 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-27 23:41:36,703 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:41:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 351 proven. 325 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-27 23:41:37,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:41:37,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569492147] [2024-11-27 23:41:37,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569492147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:41:37,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541612616] [2024-11-27 23:41:37,693 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:41:37,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:41:37,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:41:37,696 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:41:37,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-27 23:41:38,027 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-27 23:41:38,027 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:41:38,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 23:41:38,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:41:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 351 proven. 325 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-27 23:41:39,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:41:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 351 proven. 325 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-27 23:41:39,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541612616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:41:39,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:41:39,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 45 [2024-11-27 23:41:39,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529255203] [2024-11-27 23:41:39,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:41:39,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-27 23:41:39,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:41:39,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-27 23:41:39,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 23:41:39,858 INFO L87 Difference]: Start difference. First operand 174 states and 179 transitions. Second operand has 45 states, 45 states have (on average 3.511111111111111) internal successors, (158), 45 states have internal predecessors, (158), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-27 23:41:40,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:41:40,616 INFO L93 Difference]: Finished difference Result 245 states and 251 transitions. [2024-11-27 23:41:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 23:41:40,616 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.511111111111111) internal successors, (158), 45 states have internal predecessors, (158), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 176 [2024-11-27 23:41:40,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:41:40,618 INFO L225 Difference]: With dead ends: 245 [2024-11-27 23:41:40,618 INFO L226 Difference]: Without dead ends: 185 [2024-11-27 23:41:40,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 310 SyntacticMatches, 28 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=836, Invalid=2586, Unknown=0, NotChecked=0, Total=3422 [2024-11-27 23:41:40,620 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 281 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:41:40,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 251 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:41:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-27 23:41:40,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 169. [2024-11-27 23:41:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 16 states have call successors, (16), 13 states have call predecessors, (16), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-27 23:41:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 173 transitions. [2024-11-27 23:41:40,669 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 173 transitions. Word has length 176 [2024-11-27 23:41:40,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:41:40,670 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 173 transitions. [2024-11-27 23:41:40,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.511111111111111) internal successors, (158), 45 states have internal predecessors, (158), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-27 23:41:40,670 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 173 transitions. [2024-11-27 23:41:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-27 23:41:40,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:41:40,671 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 14, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:41:40,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-27 23:41:40,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:41:40,871 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:41:40,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:41:40,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1511079821, now seen corresponding path program 36 times [2024-11-27 23:41:40,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:41:40,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001422678] [2024-11-27 23:41:40,872 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:41:40,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:41:40,974 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-27 23:41:40,975 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:41:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 42 proven. 720 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-27 23:41:42,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:41:42,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001422678] [2024-11-27 23:41:42,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001422678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:41:42,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214942323] [2024-11-27 23:41:42,914 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:41:42,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:41:42,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:41:42,916 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:41:42,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-27 23:41:44,111 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-27 23:41:44,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:41:44,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-27 23:41:44,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:41:45,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:41:45,752 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 23:41:45,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-27 23:41:47,210 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 28 treesize of output 10 [2024-11-27 23:41:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 96 proven. 720 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-27 23:41:47,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:42:24,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214942323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:42:24,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:42:24,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 68 [2024-11-27 23:42:24,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960472903] [2024-11-27 23:42:24,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:42:24,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-27 23:42:24,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:42:24,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-27 23:42:24,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=4516, Unknown=8, NotChecked=0, Total=4830 [2024-11-27 23:42:24,320 INFO L87 Difference]: Start difference. First operand 169 states and 173 transitions. Second operand has 68 states, 68 states have (on average 3.014705882352941) internal successors, (205), 64 states have internal predecessors, (205), 29 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (31), 31 states have call predecessors, (31), 29 states have call successors, (31) [2024-11-27 23:42:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:42:28,554 INFO L93 Difference]: Finished difference Result 186 states and 189 transitions. [2024-11-27 23:42:28,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 23:42:28,554 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.014705882352941) internal successors, (205), 64 states have internal predecessors, (205), 29 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (31), 31 states have call predecessors, (31), 29 states have call successors, (31) Word has length 180 [2024-11-27 23:42:28,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:42:28,555 INFO L225 Difference]: With dead ends: 186 [2024-11-27 23:42:28,556 INFO L226 Difference]: Without dead ends: 184 [2024-11-27 23:42:28,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 190 SyntacticMatches, 15 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2533 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=554, Invalid=7094, Unknown=8, NotChecked=0, Total=7656 [2024-11-27 23:42:28,556 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 131 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:42:28,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1816 Invalid, 3609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-27 23:42:28,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-27 23:42:28,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 177. [2024-11-27 23:42:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 146 states have (on average 1.0136986301369864) internal successors, (148), 146 states have internal predecessors, (148), 16 states have call successors, (16), 14 states have call predecessors, (16), 14 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-27 23:42:28,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 180 transitions. [2024-11-27 23:42:28,629 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 180 transitions. Word has length 180 [2024-11-27 23:42:28,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:42:28,630 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 180 transitions. [2024-11-27 23:42:28,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.014705882352941) internal successors, (205), 64 states have internal predecessors, (205), 29 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (31), 31 states have call predecessors, (31), 29 states have call successors, (31) [2024-11-27 23:42:28,630 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 180 transitions. [2024-11-27 23:42:28,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-27 23:42:28,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:42:28,631 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:42:28,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-27 23:42:28,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-27 23:42:28,831 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:42:28,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:42:28,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1614858631, now seen corresponding path program 37 times [2024-11-27 23:42:28,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:42:28,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448228631] [2024-11-27 23:42:28,832 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:42:28,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:42:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:42:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 45 proven. 768 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-27 23:42:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:42:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448228631] [2024-11-27 23:42:30,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448228631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:42:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948025121] [2024-11-27 23:42:30,951 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:42:30,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:30,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:42:30,953 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:42:30,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-27 23:42:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:42:31,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-27 23:42:31,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:42:33,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:42:35,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:42:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 75 proven. 771 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2024-11-27 23:42:35,388 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:42:36,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:42:36,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:42:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 45 proven. 768 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-27 23:42:37,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948025121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:42:37,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:42:37,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37, 36] total 87 [2024-11-27 23:42:37,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940757488] [2024-11-27 23:42:37,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:42:37,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-11-27 23:42:37,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:42:37,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-11-27 23:42:37,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=7089, Unknown=0, NotChecked=0, Total=7482 [2024-11-27 23:42:37,934 INFO L87 Difference]: Start difference. First operand 177 states and 180 transitions. Second operand has 87 states, 86 states have (on average 3.0348837209302326) internal successors, (261), 81 states have internal predecessors, (261), 44 states have call successors, (45), 1 states have call predecessors, (45), 2 states have return successors, (46), 46 states have call predecessors, (46), 44 states have call successors, (46) [2024-11-27 23:42:42,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:42:42,576 INFO L93 Difference]: Finished difference Result 256 states and 262 transitions. [2024-11-27 23:42:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-27 23:42:42,577 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 3.0348837209302326) internal successors, (261), 81 states have internal predecessors, (261), 44 states have call successors, (45), 1 states have call predecessors, (45), 2 states have return successors, (46), 46 states have call predecessors, (46), 44 states have call successors, (46) Word has length 184 [2024-11-27 23:42:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:42:42,578 INFO L225 Difference]: With dead ends: 256 [2024-11-27 23:42:42,579 INFO L226 Difference]: Without dead ends: 254 [2024-11-27 23:42:42,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 305 SyntacticMatches, 14 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3295 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=615, Invalid=9891, Unknown=0, NotChecked=0, Total=10506 [2024-11-27 23:42:42,580 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 353 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 4847 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 4899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:42:42,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 2197 Invalid, 4899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 4847 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 23:42:42,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-27 23:42:42,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 186. [2024-11-27 23:42:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 154 states have (on average 1.0194805194805194) internal successors, (157), 154 states have internal predecessors, (157), 17 states have call successors, (17), 14 states have call predecessors, (17), 14 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:42:42,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 191 transitions. [2024-11-27 23:42:42,632 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 191 transitions. Word has length 184 [2024-11-27 23:42:42,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:42:42,632 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 191 transitions. [2024-11-27 23:42:42,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 3.0348837209302326) internal successors, (261), 81 states have internal predecessors, (261), 44 states have call successors, (45), 1 states have call predecessors, (45), 2 states have return successors, (46), 46 states have call predecessors, (46), 44 states have call successors, (46) [2024-11-27 23:42:42,633 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 191 transitions. [2024-11-27 23:42:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-27 23:42:42,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:42:42,634 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:42:42,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-27 23:42:42,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:42,834 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:42:42,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:42:42,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1330038401, now seen corresponding path program 38 times [2024-11-27 23:42:42,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:42:42,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956050648] [2024-11-27 23:42:42,835 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:42:42,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:42:42,857 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:42:42,857 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:42:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 353 proven. 431 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-27 23:42:43,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:42:43,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956050648] [2024-11-27 23:42:43,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956050648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:42:43,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878441416] [2024-11-27 23:42:43,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:42:43,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:43,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:42:43,726 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:42:43,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-27 23:42:43,971 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:42:43,972 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:42:43,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 23:42:43,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:42:45,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 406 proven. 378 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-27 23:42:45,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:42:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 406 proven. 378 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-27 23:42:45,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878441416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:42:45,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:42:45,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2024-11-27 23:42:45,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302577877] [2024-11-27 23:42:45,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:42:45,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-27 23:42:45,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:42:45,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-27 23:42:45,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2024-11-27 23:42:45,968 INFO L87 Difference]: Start difference. First operand 186 states and 191 transitions. Second operand has 50 states, 50 states have (on average 3.56) internal successors, (178), 50 states have internal predecessors, (178), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-27 23:42:46,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:42:46,655 INFO L93 Difference]: Finished difference Result 261 states and 267 transitions. [2024-11-27 23:42:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 23:42:46,656 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.56) internal successors, (178), 50 states have internal predecessors, (178), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) Word has length 188 [2024-11-27 23:42:46,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:42:46,657 INFO L225 Difference]: With dead ends: 261 [2024-11-27 23:42:46,657 INFO L226 Difference]: Without dead ends: 197 [2024-11-27 23:42:46,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 330 SyntacticMatches, 29 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1872 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=966, Invalid=3066, Unknown=0, NotChecked=0, Total=4032 [2024-11-27 23:42:46,658 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 194 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:42:46,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 258 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:42:46,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-27 23:42:46,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 181. [2024-11-27 23:42:46,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 149 states have internal predecessors, (151), 17 states have call successors, (17), 14 states have call predecessors, (17), 14 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:42:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2024-11-27 23:42:46,721 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 188 [2024-11-27 23:42:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:42:46,722 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2024-11-27 23:42:46,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.56) internal successors, (178), 50 states have internal predecessors, (178), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-27 23:42:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2024-11-27 23:42:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:42:46,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:42:46,723 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 15, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:42:46,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-27 23:42:46,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:46,923 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:42:46,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:42:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1726462342, now seen corresponding path program 39 times [2024-11-27 23:42:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:42:46,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271923143] [2024-11-27 23:42:46,924 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:42:46,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:42:47,047 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-27 23:42:47,047 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:42:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 384 proven. 558 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2024-11-27 23:42:51,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:42:51,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271923143] [2024-11-27 23:42:51,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271923143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:42:51,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952604393] [2024-11-27 23:42:51,929 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:42:51,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:51,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:42:51,931 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:42:51,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-27 23:42:53,156 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-27 23:42:53,156 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:42:53,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-27 23:42:53,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:42:54,450 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 19 treesize of output 1 [2024-11-27 23:42:54,802 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 23:42:54,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-27 23:42:56,429 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 28 treesize of output 10 [2024-11-27 23:42:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 103 proven. 831 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-27 23:42:56,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:43:01,900 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (< 15 (select (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~i~0#1|)) (+ 56 |c_ULTIMATE.start_main_~#a~0#1.offset|)))) is different from false [2024-11-27 23:43:01,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952604393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:43:01,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:43:01,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 39] total 76 [2024-11-27 23:43:01,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864491688] [2024-11-27 23:43:01,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:43:01,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-27 23:43:01,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:43:01,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-27 23:43:01,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=7523, Unknown=1, NotChecked=178, Total=8372 [2024-11-27 23:43:01,918 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand has 76 states, 76 states have (on average 2.8815789473684212) internal successors, (219), 70 states have internal predecessors, (219), 31 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (33), 33 states have call predecessors, (33), 31 states have call successors, (33) [2024-11-27 23:43:11,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:43:11,309 INFO L93 Difference]: Finished difference Result 261 states and 269 transitions. [2024-11-27 23:43:11,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-27 23:43:11,309 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.8815789473684212) internal successors, (219), 70 states have internal predecessors, (219), 31 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (33), 33 states have call predecessors, (33), 31 states have call successors, (33) Word has length 192 [2024-11-27 23:43:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:43:11,310 INFO L225 Difference]: With dead ends: 261 [2024-11-27 23:43:11,310 INFO L226 Difference]: Without dead ends: 197 [2024-11-27 23:43:11,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 208 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7479 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=1985, Invalid=20368, Unknown=1, NotChecked=296, Total=22650 [2024-11-27 23:43:11,313 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 427 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 3055 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:43:11,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1261 Invalid, 3134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3055 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-27 23:43:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-27 23:43:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 193. [2024-11-27 23:43:11,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 159 states have internal predecessors, (161), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-27 23:43:11,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 197 transitions. [2024-11-27 23:43:11,413 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 197 transitions. Word has length 192 [2024-11-27 23:43:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:43:11,416 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 197 transitions. [2024-11-27 23:43:11,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.8815789473684212) internal successors, (219), 70 states have internal predecessors, (219), 31 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (33), 33 states have call predecessors, (33), 31 states have call successors, (33) [2024-11-27 23:43:11,417 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 197 transitions. [2024-11-27 23:43:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-27 23:43:11,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:43:11,418 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 16, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:43:11,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-27 23:43:11,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:43:11,619 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:43:11,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:43:11,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1321387417, now seen corresponding path program 40 times [2024-11-27 23:43:11,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:43:11,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078539653] [2024-11-27 23:43:11,620 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:43:11,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:43:11,677 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:43:11,677 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:43:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 48 proven. 950 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2024-11-27 23:43:13,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:43:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078539653] [2024-11-27 23:43:13,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078539653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:43:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147516555] [2024-11-27 23:43:13,609 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:43:13,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:43:13,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:43:13,612 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:43:13,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-27 23:43:13,946 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:43:13,947 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:43:13,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-27 23:43:13,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:43:16,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:43:16,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:43:16,784 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 34 treesize of output 14 [2024-11-27 23:43:19,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:43:19,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 110 proven. 950 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2024-11-27 23:43:19,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:43:48,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147516555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:43:48,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:43:48,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41] total 77 [2024-11-27 23:43:48,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156534679] [2024-11-27 23:43:48,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:43:48,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-27 23:43:48,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:43:48,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-27 23:43:48,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=5627, Unknown=7, NotChecked=0, Total=6006 [2024-11-27 23:43:48,672 INFO L87 Difference]: Start difference. First operand 193 states and 197 transitions. Second operand has 77 states, 76 states have (on average 3.0789473684210527) internal successors, (234), 73 states have internal predecessors, (234), 34 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2024-11-27 23:43:53,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:43:53,448 INFO L93 Difference]: Finished difference Result 210 states and 213 transitions. [2024-11-27 23:43:53,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-27 23:43:53,448 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 3.0789473684210527) internal successors, (234), 73 states have internal predecessors, (234), 34 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) Word has length 204 [2024-11-27 23:43:53,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:43:53,449 INFO L225 Difference]: With dead ends: 210 [2024-11-27 23:43:53,449 INFO L226 Difference]: Without dead ends: 208 [2024-11-27 23:43:53,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 215 SyntacticMatches, 18 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3143 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=669, Invalid=8830, Unknown=7, NotChecked=0, Total=9506 [2024-11-27 23:43:53,451 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 166 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 4785 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 4812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 4785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:43:53,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2201 Invalid, 4812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 4785 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 23:43:53,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-27 23:43:53,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 201. [2024-11-27 23:43:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 166 states have internal predecessors, (168), 18 states have call successors, (18), 16 states have call predecessors, (18), 16 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-27 23:43:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 204 transitions. [2024-11-27 23:43:53,543 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 204 transitions. Word has length 204 [2024-11-27 23:43:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:43:53,543 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 204 transitions. [2024-11-27 23:43:53,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 3.0789473684210527) internal successors, (234), 73 states have internal predecessors, (234), 34 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2024-11-27 23:43:53,543 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 204 transitions. [2024-11-27 23:43:53,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-27 23:43:53,544 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:43:53,544 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:43:53,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-27 23:43:53,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-27 23:43:53,745 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:43:53,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:43:53,745 INFO L85 PathProgramCache]: Analyzing trace with hash 119552159, now seen corresponding path program 41 times [2024-11-27 23:43:53,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:43:53,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530564435] [2024-11-27 23:43:53,745 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:43:53,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:43:53,886 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-27 23:43:53,886 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:43:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1573 backedges. 51 proven. 1006 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2024-11-27 23:43:56,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:43:56,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530564435] [2024-11-27 23:43:56,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530564435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:43:56,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091637875] [2024-11-27 23:43:56,112 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:43:56,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:43:56,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:43:56,114 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:43:56,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-27 23:43:56,575 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-27 23:43:56,576 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:43:56,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-27 23:43:56,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:43:58,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:44:01,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:44:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1573 backedges. 51 proven. 1006 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2024-11-27 23:44:01,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:44:02,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:44:02,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:44:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1573 backedges. 51 proven. 1006 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2024-11-27 23:44:02,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091637875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:44:02,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:44:02,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 43, 41] total 81 [2024-11-27 23:44:02,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016492829] [2024-11-27 23:44:02,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:44:02,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-27 23:44:02,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:44:02,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-27 23:44:02,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=6136, Unknown=0, NotChecked=0, Total=6480 [2024-11-27 23:44:02,766 INFO L87 Difference]: Start difference. First operand 201 states and 204 transitions. Second operand has 81 states, 80 states have (on average 3.0375) internal successors, (243), 77 states have internal predecessors, (243), 34 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2024-11-27 23:44:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:44:08,250 INFO L93 Difference]: Finished difference Result 294 states and 300 transitions. [2024-11-27 23:44:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-27 23:44:08,250 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 3.0375) internal successors, (243), 77 states have internal predecessors, (243), 34 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) Word has length 208 [2024-11-27 23:44:08,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:44:08,252 INFO L225 Difference]: With dead ends: 294 [2024-11-27 23:44:08,252 INFO L226 Difference]: Without dead ends: 292 [2024-11-27 23:44:08,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 357 SyntacticMatches, 20 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3330 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=619, Invalid=9481, Unknown=0, NotChecked=0, Total=10100 [2024-11-27 23:44:08,253 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 384 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 5691 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 5740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 5691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:44:08,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 2369 Invalid, 5740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 5691 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-27 23:44:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-27 23:44:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 210. [2024-11-27 23:44:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 174 states have (on average 1.0172413793103448) internal successors, (177), 174 states have internal predecessors, (177), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-27 23:44:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 215 transitions. [2024-11-27 23:44:08,345 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 215 transitions. Word has length 208 [2024-11-27 23:44:08,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:44:08,345 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 215 transitions. [2024-11-27 23:44:08,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 3.0375) internal successors, (243), 77 states have internal predecessors, (243), 34 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2024-11-27 23:44:08,345 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 215 transitions. [2024-11-27 23:44:08,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-27 23:44:08,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:44:08,347 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:44:08,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-27 23:44:08,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-27 23:44:08,548 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:44:08,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:44:08,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1646217051, now seen corresponding path program 42 times [2024-11-27 23:44:08,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:44:08,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328713751] [2024-11-27 23:44:08,548 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:44:08,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:44:08,680 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-27 23:44:08,681 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:44:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1636 backedges. 467 proven. 557 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-27 23:44:10,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:44:10,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328713751] [2024-11-27 23:44:10,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328713751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:44:10,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150720712] [2024-11-27 23:44:10,105 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:44:10,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:44:10,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:44:10,107 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:44:10,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-27 23:44:11,374 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-27 23:44:11,374 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:44:11,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-27 23:44:11,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:44:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1636 backedges. 528 proven. 496 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-27 23:44:12,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:44:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1636 backedges. 528 proven. 496 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-27 23:44:13,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150720712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:44:13,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:44:13,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 55 [2024-11-27 23:44:13,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389455746] [2024-11-27 23:44:13,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:44:13,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-27 23:44:13,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:44:13,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-27 23:44:13,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=2265, Unknown=0, NotChecked=0, Total=2970 [2024-11-27 23:44:13,742 INFO L87 Difference]: Start difference. First operand 210 states and 215 transitions. Second operand has 55 states, 55 states have (on average 3.5636363636363635) internal successors, (196), 55 states have internal predecessors, (196), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-27 23:44:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:44:14,671 INFO L93 Difference]: Finished difference Result 293 states and 299 transitions. [2024-11-27 23:44:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-27 23:44:14,672 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.5636363636363635) internal successors, (196), 55 states have internal predecessors, (196), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 212 [2024-11-27 23:44:14,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:44:14,674 INFO L225 Difference]: With dead ends: 293 [2024-11-27 23:44:14,674 INFO L226 Difference]: Without dead ends: 221 [2024-11-27 23:44:14,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 373 SyntacticMatches, 33 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2170 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1193, Invalid=3777, Unknown=0, NotChecked=0, Total=4970 [2024-11-27 23:44:14,675 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 296 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:44:14,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 317 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:44:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-27 23:44:14,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2024-11-27 23:44:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 169 states have (on average 1.0118343195266273) internal successors, (171), 169 states have internal predecessors, (171), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-27 23:44:14,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2024-11-27 23:44:14,794 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 212 [2024-11-27 23:44:14,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:44:14,794 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2024-11-27 23:44:14,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.5636363636363635) internal successors, (196), 55 states have internal predecessors, (196), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-27 23:44:14,795 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2024-11-27 23:44:14,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-27 23:44:14,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:44:14,796 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 17, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:44:14,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-27 23:44:14,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-27 23:44:14,997 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:44:14,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:44:14,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1143186604, now seen corresponding path program 43 times [2024-11-27 23:44:14,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:44:14,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984747135] [2024-11-27 23:44:14,998 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:44:14,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:44:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:44:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1710 backedges. 51 proven. 1077 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-11-27 23:44:17,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:44:17,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984747135] [2024-11-27 23:44:17,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984747135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:44:17,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395838121] [2024-11-27 23:44:17,959 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:44:17,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:44:17,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:44:17,961 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:44:17,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-27 23:44:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:44:18,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-27 23:44:18,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:44:21,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:44:21,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:44:21,515 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 34 treesize of output 14 [2024-11-27 23:44:24,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:44:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1710 backedges. 117 proven. 1077 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2024-11-27 23:44:24,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:45:05,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395838121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:45:05,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:45:05,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 44] total 82 [2024-11-27 23:45:05,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306204676] [2024-11-27 23:45:05,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:45:05,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-27 23:45:05,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:45:05,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-27 23:45:05,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=6714, Unknown=9, NotChecked=0, Total=7140 [2024-11-27 23:45:05,630 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand has 82 states, 81 states have (on average 3.0617283950617282) internal successors, (248), 78 states have internal predecessors, (248), 36 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2024-11-27 23:45:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:45:10,989 INFO L93 Difference]: Finished difference Result 222 states and 225 transitions. [2024-11-27 23:45:10,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-27 23:45:10,990 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 3.0617283950617282) internal successors, (248), 78 states have internal predecessors, (248), 36 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) Word has length 216 [2024-11-27 23:45:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:45:10,991 INFO L225 Difference]: With dead ends: 222 [2024-11-27 23:45:10,991 INFO L226 Difference]: Without dead ends: 220 [2024-11-27 23:45:10,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 226 SyntacticMatches, 18 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3784 ImplicationChecksByTransitivity, 48.1s TimeCoverageRelationStatistics Valid=753, Invalid=10580, Unknown=9, NotChecked=0, Total=11342 [2024-11-27 23:45:10,992 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 198 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 5710 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 5737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 5710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:45:10,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 2486 Invalid, 5737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 5710 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-27 23:45:10,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-27 23:45:11,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2024-11-27 23:45:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 176 states have (on average 1.0113636363636365) internal successors, (178), 176 states have internal predecessors, (178), 19 states have call successors, (19), 17 states have call predecessors, (19), 17 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-27 23:45:11,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 216 transitions. [2024-11-27 23:45:11,095 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 216 transitions. Word has length 216 [2024-11-27 23:45:11,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:45:11,095 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 216 transitions. [2024-11-27 23:45:11,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 3.0617283950617282) internal successors, (248), 78 states have internal predecessors, (248), 36 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2024-11-27 23:45:11,096 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 216 transitions. [2024-11-27 23:45:11,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-27 23:45:11,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:45:11,097 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:45:11,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-27 23:45:11,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-27 23:45:11,298 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:45:11,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:45:11,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1811589582, now seen corresponding path program 44 times [2024-11-27 23:45:11,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:45:11,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501401075] [2024-11-27 23:45:11,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:45:11,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:45:11,363 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:45:11,363 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:45:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 474 proven. 717 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-11-27 23:45:13,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:45:13,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501401075] [2024-11-27 23:45:13,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501401075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:45:13,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500396058] [2024-11-27 23:45:13,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:45:13,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:45:13,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:45:13,987 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:45:13,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-27 23:45:14,321 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:45:14,321 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:45:14,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-27 23:45:14,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:45:16,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:45:19,019 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 28 treesize of output 10 [2024-11-27 23:45:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 54 proven. 1137 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-11-27 23:45:19,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:45:21,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:45:21,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:45:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 54 proven. 1137 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-11-27 23:45:23,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500396058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:45:23,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:45:23,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 121 [2024-11-27 23:45:23,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904287334] [2024-11-27 23:45:23,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:45:23,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-11-27 23:45:23,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:45:23,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-11-27 23:45:23,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1739, Invalid=12781, Unknown=0, NotChecked=0, Total=14520 [2024-11-27 23:45:23,963 INFO L87 Difference]: Start difference. First operand 213 states and 216 transitions. Second operand has 121 states, 121 states have (on average 3.0826446280991737) internal successors, (373), 116 states have internal predecessors, (373), 52 states have call successors, (53), 1 states have call predecessors, (53), 2 states have return successors, (54), 54 states have call predecessors, (54), 52 states have call successors, (54) [2024-11-27 23:45:30,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:45:30,291 INFO L93 Difference]: Finished difference Result 302 states and 309 transitions. [2024-11-27 23:45:30,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-27 23:45:30,292 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 3.0826446280991737) internal successors, (373), 116 states have internal predecessors, (373), 52 states have call successors, (53), 1 states have call predecessors, (53), 2 states have return successors, (54), 54 states have call predecessors, (54), 52 states have call successors, (54) Word has length 220 [2024-11-27 23:45:30,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:45:30,294 INFO L225 Difference]: With dead ends: 302 [2024-11-27 23:45:30,294 INFO L226 Difference]: Without dead ends: 227 [2024-11-27 23:45:30,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 362 SyntacticMatches, 3 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7181 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=2669, Invalid=17923, Unknown=0, NotChecked=0, Total=20592 [2024-11-27 23:45:30,296 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 353 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 5184 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 5265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 5184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:45:30,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 2501 Invalid, 5265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 5184 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-27 23:45:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-27 23:45:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 217. [2024-11-27 23:45:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 179 states have (on average 1.011173184357542) internal successors, (181), 179 states have internal predecessors, (181), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-27 23:45:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 221 transitions. [2024-11-27 23:45:30,397 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 221 transitions. Word has length 220 [2024-11-27 23:45:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:45:30,397 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 221 transitions. [2024-11-27 23:45:30,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 3.0826446280991737) internal successors, (373), 116 states have internal predecessors, (373), 52 states have call successors, (53), 1 states have call predecessors, (53), 2 states have return successors, (54), 54 states have call predecessors, (54), 52 states have call successors, (54) [2024-11-27 23:45:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 221 transitions. [2024-11-27 23:45:30,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-27 23:45:30,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:45:30,399 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 18, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:45:30,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-27 23:45:30,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-27 23:45:30,599 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:45:30,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:45:30,599 INFO L85 PathProgramCache]: Analyzing trace with hash -940697921, now seen corresponding path program 45 times [2024-11-27 23:45:30,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:45:30,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211595714] [2024-11-27 23:45:30,600 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:45:30,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:45:30,695 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2024-11-27 23:45:30,695 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:45:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 54 proven. 1212 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2024-11-27 23:45:32,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:45:32,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211595714] [2024-11-27 23:45:32,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211595714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:45:32,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676480421] [2024-11-27 23:45:32,865 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:45:32,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:45:32,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:45:32,868 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:45:32,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-27 23:45:35,261 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2024-11-27 23:45:35,262 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:45:35,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-27 23:45:35,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:45:37,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:45:37,768 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 23:45:37,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-27 23:45:39,976 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 28 treesize of output 10 [2024-11-27 23:45:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 124 proven. 1212 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-11-27 23:45:40,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:46:05,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676480421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:46:05,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:46:05,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 84 [2024-11-27 23:46:05,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837675672] [2024-11-27 23:46:05,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:46:05,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-27 23:46:05,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:46:05,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-27 23:46:05,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=6922, Unknown=6, NotChecked=0, Total=7310 [2024-11-27 23:46:05,378 INFO L87 Difference]: Start difference. First operand 217 states and 221 transitions. Second operand has 84 states, 84 states have (on average 3.107142857142857) internal successors, (261), 80 states have internal predecessors, (261), 37 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (39), 39 states have call predecessors, (39), 37 states have call successors, (39) [2024-11-27 23:46:12,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:46:12,088 INFO L93 Difference]: Finished difference Result 234 states and 237 transitions. [2024-11-27 23:46:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-27 23:46:12,089 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.107142857142857) internal successors, (261), 80 states have internal predecessors, (261), 37 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (39), 39 states have call predecessors, (39), 37 states have call successors, (39) Word has length 228 [2024-11-27 23:46:12,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:46:12,090 INFO L225 Difference]: With dead ends: 234 [2024-11-27 23:46:12,090 INFO L226 Difference]: Without dead ends: 232 [2024-11-27 23:46:12,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 242 SyntacticMatches, 19 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3926 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=694, Invalid=10856, Unknown=6, NotChecked=0, Total=11556 [2024-11-27 23:46:12,092 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 159 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 6537 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 6566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 6537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:46:12,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 3117 Invalid, 6566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 6537 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-27 23:46:12,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-27 23:46:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 225. [2024-11-27 23:46:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 186 states have (on average 1.010752688172043) internal successors, (188), 186 states have internal predecessors, (188), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-27 23:46:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 228 transitions. [2024-11-27 23:46:12,211 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 228 transitions. Word has length 228 [2024-11-27 23:46:12,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:46:12,212 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 228 transitions. [2024-11-27 23:46:12,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.107142857142857) internal successors, (261), 80 states have internal predecessors, (261), 37 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (39), 39 states have call predecessors, (39), 37 states have call successors, (39) [2024-11-27 23:46:12,212 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 228 transitions. [2024-11-27 23:46:12,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-27 23:46:12,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:46:12,214 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:46:12,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-27 23:46:12,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-27 23:46:12,414 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:46:12,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:46:12,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1783793349, now seen corresponding path program 46 times [2024-11-27 23:46:12,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:46:12,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788467297] [2024-11-27 23:46:12,415 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:46:12,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:46:12,485 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:46:12,486 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:46:14,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 57 proven. 1276 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2024-11-27 23:46:14,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:46:14,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788467297] [2024-11-27 23:46:14,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788467297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:46:14,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934173635] [2024-11-27 23:46:14,753 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:46:14,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:46:14,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:46:14,755 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:46:14,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-27 23:46:15,215 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:46:15,215 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:46:15,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-27 23:46:15,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:46:18,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:46:20,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:46:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 57 proven. 1276 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2024-11-27 23:46:20,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:46:21,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:46:21,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:46:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 57 proven. 1276 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2024-11-27 23:46:22,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934173635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:46:22,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:46:22,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 46, 45] total 88 [2024-11-27 23:46:22,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840178597] [2024-11-27 23:46:22,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:46:22,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-27 23:46:22,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:46:22,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-27 23:46:22,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=7300, Unknown=0, NotChecked=0, Total=7656 [2024-11-27 23:46:22,203 INFO L87 Difference]: Start difference. First operand 225 states and 228 transitions. Second operand has 88 states, 87 states have (on average 3.1149425287356323) internal successors, (271), 84 states have internal predecessors, (271), 38 states have call successors, (39), 1 states have call predecessors, (39), 2 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2024-11-27 23:46:28,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:46:28,600 INFO L93 Difference]: Finished difference Result 320 states and 326 transitions. [2024-11-27 23:46:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-27 23:46:28,601 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 3.1149425287356323) internal successors, (271), 84 states have internal predecessors, (271), 38 states have call successors, (39), 1 states have call predecessors, (39), 2 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) Word has length 232 [2024-11-27 23:46:28,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:46:28,603 INFO L225 Difference]: With dead ends: 320 [2024-11-27 23:46:28,603 INFO L226 Difference]: Without dead ends: 318 [2024-11-27 23:46:28,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 401 SyntacticMatches, 21 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3860 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=610, Invalid=11162, Unknown=0, NotChecked=0, Total=11772 [2024-11-27 23:46:28,604 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 265 mSDsluCounter, 3414 mSDsCounter, 0 mSdLazyCounter, 7440 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 7491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 7440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:46:28,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 3483 Invalid, 7491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 7440 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-27 23:46:28,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-27 23:46:28,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 234. [2024-11-27 23:46:28,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 194 states have (on average 1.0154639175257731) internal successors, (197), 194 states have internal predecessors, (197), 21 states have call successors, (21), 18 states have call predecessors, (21), 18 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-27 23:46:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 239 transitions. [2024-11-27 23:46:28,743 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 239 transitions. Word has length 232 [2024-11-27 23:46:28,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:46:28,743 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 239 transitions. [2024-11-27 23:46:28,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 3.1149425287356323) internal successors, (271), 84 states have internal predecessors, (271), 38 states have call successors, (39), 1 states have call predecessors, (39), 2 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2024-11-27 23:46:28,743 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 239 transitions. [2024-11-27 23:46:28,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-27 23:46:28,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:46:28,745 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:46:28,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-27 23:46:28,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-27 23:46:28,949 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:46:28,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:46:28,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1699972043, now seen corresponding path program 47 times [2024-11-27 23:46:28,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:46:28,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298274646] [2024-11-27 23:46:28,949 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:46:28,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:46:29,044 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-27 23:46:29,044 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:46:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 666 proven. 630 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 23:46:30,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:46:30,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298274646] [2024-11-27 23:46:30,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298274646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:46:30,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720740482] [2024-11-27 23:46:30,393 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:46:30,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:46:30,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:46:30,395 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:46:30,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-27 23:46:30,955 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-27 23:46:30,955 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:46:30,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 23:46:30,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:46:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 666 proven. 630 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 23:46:32,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:46:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 666 proven. 630 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 23:46:33,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720740482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:46:33,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:46:33,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 60 [2024-11-27 23:46:33,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671892777] [2024-11-27 23:46:33,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:46:33,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-27 23:46:33,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:46:33,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-27 23:46:33,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2024-11-27 23:46:33,719 INFO L87 Difference]: Start difference. First operand 234 states and 239 transitions. Second operand has 60 states, 60 states have (on average 3.55) internal successors, (213), 60 states have internal predecessors, (213), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2024-11-27 23:46:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:46:35,008 INFO L93 Difference]: Finished difference Result 325 states and 331 transitions. [2024-11-27 23:46:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-27 23:46:35,008 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.55) internal successors, (213), 60 states have internal predecessors, (213), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 236 [2024-11-27 23:46:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:46:35,010 INFO L225 Difference]: With dead ends: 325 [2024-11-27 23:46:35,010 INFO L226 Difference]: Without dead ends: 245 [2024-11-27 23:46:35,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 415 SyntacticMatches, 38 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2584 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1466, Invalid=4696, Unknown=0, NotChecked=0, Total=6162 [2024-11-27 23:46:35,011 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 405 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:46:35,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 246 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:46:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-27 23:46:35,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 229. [2024-11-27 23:46:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 189 states have internal predecessors, (191), 21 states have call successors, (21), 18 states have call predecessors, (21), 18 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-27 23:46:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2024-11-27 23:46:35,122 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 236 [2024-11-27 23:46:35,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:46:35,123 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2024-11-27 23:46:35,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.55) internal successors, (213), 60 states have internal predecessors, (213), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2024-11-27 23:46:35,123 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2024-11-27 23:46:35,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-27 23:46:35,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:46:35,125 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 19, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:46:35,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-27 23:46:35,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:46:35,325 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:46:35,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:46:35,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1522148398, now seen corresponding path program 48 times [2024-11-27 23:46:35,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:46:35,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910849674] [2024-11-27 23:46:35,326 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:46:35,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:46:35,453 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-27 23:46:35,453 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:46:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2138 backedges. 57 proven. 1355 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-11-27 23:46:37,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:46:37,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910849674] [2024-11-27 23:46:37,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910849674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:46:37,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412435268] [2024-11-27 23:46:37,838 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:46:37,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:46:37,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:46:37,840 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:46:37,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-27 23:46:39,079 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-27 23:46:39,079 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:46:39,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-27 23:46:39,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:46:41,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:46:41,689 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-27 23:46:41,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-27 23:46:44,029 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 28 treesize of output 10 [2024-11-27 23:46:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2138 backedges. 146 proven. 1385 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2024-11-27 23:46:44,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:47:13,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412435268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:47:13,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:47:13,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 88 [2024-11-27 23:47:13,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442336291] [2024-11-27 23:47:13,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:47:13,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-27 23:47:13,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:47:13,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-27 23:47:13,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=7603, Unknown=6, NotChecked=0, Total=8010 [2024-11-27 23:47:13,603 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 88 states, 88 states have (on average 3.125) internal successors, (275), 84 states have internal predecessors, (275), 39 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (41), 41 states have call predecessors, (41), 39 states have call successors, (41) [2024-11-27 23:47:19,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:47:19,734 INFO L93 Difference]: Finished difference Result 246 states and 249 transitions. [2024-11-27 23:47:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-27 23:47:19,735 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 3.125) internal successors, (275), 84 states have internal predecessors, (275), 39 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (41), 41 states have call predecessors, (41), 39 states have call successors, (41) Word has length 240 [2024-11-27 23:47:19,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:47:19,736 INFO L225 Difference]: With dead ends: 246 [2024-11-27 23:47:19,736 INFO L226 Difference]: Without dead ends: 244 [2024-11-27 23:47:19,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 256 SyntacticMatches, 19 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4260 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=729, Invalid=11921, Unknown=6, NotChecked=0, Total=12656 [2024-11-27 23:47:19,737 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 157 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 6422 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 6454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 6422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:47:19,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 3218 Invalid, 6454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 6422 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-27 23:47:19,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-27 23:47:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2024-11-27 23:47:19,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 196 states have (on average 1.010204081632653) internal successors, (198), 196 states have internal predecessors, (198), 21 states have call successors, (21), 19 states have call predecessors, (21), 19 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-27 23:47:19,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 240 transitions. [2024-11-27 23:47:19,874 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 240 transitions. Word has length 240 [2024-11-27 23:47:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:47:19,874 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 240 transitions. [2024-11-27 23:47:19,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 3.125) internal successors, (275), 84 states have internal predecessors, (275), 39 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (41), 41 states have call predecessors, (41), 39 states have call successors, (41) [2024-11-27 23:47:19,875 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 240 transitions. [2024-11-27 23:47:19,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-27 23:47:19,876 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:47:19,876 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:47:19,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-27 23:47:20,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-27 23:47:20,077 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:47:20,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:47:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1655993768, now seen corresponding path program 49 times [2024-11-27 23:47:20,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:47:20,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438113152] [2024-11-27 23:47:20,077 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:47:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:47:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:47:22,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 60 proven. 1423 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-11-27 23:47:22,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:47:22,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438113152] [2024-11-27 23:47:22,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438113152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:47:22,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446911971] [2024-11-27 23:47:22,460 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:47:22,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:47:22,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:47:22,462 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:47:22,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-27 23:47:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:47:22,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-27 23:47:22,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:47:25,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:47:28,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:47:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 60 proven. 1423 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-11-27 23:47:28,621 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:47:29,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-27 23:47:29,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-27 23:47:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 60 proven. 1423 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-11-27 23:47:30,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446911971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:47:30,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:47:30,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 48, 47] total 93 [2024-11-27 23:47:30,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354110036] [2024-11-27 23:47:30,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:47:30,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-27 23:47:30,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:47:30,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-27 23:47:30,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=8178, Unknown=0, NotChecked=0, Total=8556 [2024-11-27 23:47:30,579 INFO L87 Difference]: Start difference. First operand 237 states and 240 transitions. Second operand has 93 states, 92 states have (on average 3.152173913043478) internal successors, (290), 89 states have internal predecessors, (290), 40 states have call successors, (41), 1 states have call predecessors, (41), 2 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2024-11-27 23:47:37,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:47:37,857 INFO L93 Difference]: Finished difference Result 336 states and 342 transitions. [2024-11-27 23:47:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-27 23:47:37,858 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 3.152173913043478) internal successors, (290), 89 states have internal predecessors, (290), 40 states have call successors, (41), 1 states have call predecessors, (41), 2 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) Word has length 244 [2024-11-27 23:47:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:47:37,860 INFO L225 Difference]: With dead ends: 336 [2024-11-27 23:47:37,860 INFO L226 Difference]: Without dead ends: 334 [2024-11-27 23:47:37,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 422 SyntacticMatches, 21 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4321 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=645, Invalid=12465, Unknown=0, NotChecked=0, Total=13110 [2024-11-27 23:47:37,862 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 316 mSDsluCounter, 3522 mSDsCounter, 0 mSdLazyCounter, 7874 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 7932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 7874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:47:37,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 3594 Invalid, 7932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 7874 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-27 23:47:37,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-27 23:47:38,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 246. [2024-11-27 23:47:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 204 states have (on average 1.0147058823529411) internal successors, (207), 204 states have internal predecessors, (207), 22 states have call successors, (22), 19 states have call predecessors, (22), 19 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-27 23:47:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 251 transitions. [2024-11-27 23:47:38,036 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 251 transitions. Word has length 244 [2024-11-27 23:47:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:47:38,037 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 251 transitions. [2024-11-27 23:47:38,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 92 states have (on average 3.152173913043478) internal successors, (290), 89 states have internal predecessors, (290), 40 states have call successors, (41), 1 states have call predecessors, (41), 2 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2024-11-27 23:47:38,037 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 251 transitions. [2024-11-27 23:47:38,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-27 23:47:38,039 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:47:38,039 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:47:38,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-27 23:47:38,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-27 23:47:38,240 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:47:38,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:47:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1507162658, now seen corresponding path program 50 times [2024-11-27 23:47:38,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:47:38,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838442503] [2024-11-27 23:47:38,241 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:47:38,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:47:38,285 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:47:38,285 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:47:39,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2284 backedges. 668 proven. 776 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-27 23:47:39,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:47:39,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838442503] [2024-11-27 23:47:39,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838442503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:47:39,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510208923] [2024-11-27 23:47:39,792 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:47:39,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:47:39,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:47:39,794 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:47:39,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-27 23:47:40,146 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:47:40,146 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:47:40,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-27 23:47:40,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:47:41,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2284 backedges. 741 proven. 703 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-27 23:47:41,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:47:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2284 backedges. 741 proven. 703 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-27 23:47:42,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510208923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:47:42,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:47:42,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-11-27 23:47:42,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975986481] [2024-11-27 23:47:42,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:47:42,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-27 23:47:42,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:47:42,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-27 23:47:42,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=971, Invalid=3189, Unknown=0, NotChecked=0, Total=4160 [2024-11-27 23:47:42,999 INFO L87 Difference]: Start difference. First operand 246 states and 251 transitions. Second operand has 65 states, 65 states have (on average 3.5846153846153848) internal successors, (233), 65 states have internal predecessors, (233), 21 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-27 23:47:44,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:47:44,101 INFO L93 Difference]: Finished difference Result 341 states and 347 transitions. [2024-11-27 23:47:44,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-27 23:47:44,102 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.5846153846153848) internal successors, (233), 65 states have internal predecessors, (233), 21 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) Word has length 248 [2024-11-27 23:47:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:47:44,103 INFO L225 Difference]: With dead ends: 341 [2024-11-27 23:47:44,103 INFO L226 Difference]: Without dead ends: 257 [2024-11-27 23:47:44,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 435 SyntacticMatches, 39 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1636, Invalid=5336, Unknown=0, NotChecked=0, Total=6972 [2024-11-27 23:47:44,104 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 350 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:47:44,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 263 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:47:44,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-27 23:47:44,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 241. [2024-11-27 23:47:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 199 states have (on average 1.0100502512562815) internal successors, (201), 199 states have internal predecessors, (201), 22 states have call successors, (22), 19 states have call predecessors, (22), 19 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-27 23:47:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 245 transitions. [2024-11-27 23:47:44,207 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 245 transitions. Word has length 248 [2024-11-27 23:47:44,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:47:44,207 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 245 transitions. [2024-11-27 23:47:44,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.5846153846153848) internal successors, (233), 65 states have internal predecessors, (233), 21 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-27 23:47:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 245 transitions. [2024-11-27 23:47:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-27 23:47:44,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:47:44,209 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 20, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:47:44,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-27 23:47:44,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44826e4-ca7f-4d86-8881-bfecde45fd8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-27 23:47:44,410 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:47:44,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:47:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1584483355, now seen corresponding path program 51 times [2024-11-27 23:47:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:47:44,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781940504] [2024-11-27 23:47:44,411 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:47:44,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:47:44,790 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-27 23:47:44,790 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat