./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s3if.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_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/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_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s3if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/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_dca5112b-b8ca-4cf8-8076-296873445438/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 e1607ef1a0546f5061a453264a19ed217d8c8fc9b28320eac9d61d4efa33b72e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:10:41,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:10:41,668 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:10:41,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:10:41,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:10:41,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:10:41,705 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:10:41,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:10:41,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:10:41,708 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:10:41,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:10:41,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:10:41,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:10:41,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:10:41,709 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:10:41,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:10:41,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:10:41,709 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:10:41,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:10:41,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:10:41,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:10:41,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:10:41,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:10:41,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:10:41,710 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:10:41,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:10:41,710 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:10:41,710 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:10:41,710 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:10:41,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:10:41,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:10:41,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:10:41,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:10:41,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:10:41,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:10:41,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:10:41,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:10:41,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:10:41,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:10:41,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:10:41,714 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:10:41,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:10:41,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:10:41,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:10:41,715 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:10:41,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:10:41,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:10:41,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:10:41,715 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_dca5112b-b8ca-4cf8-8076-296873445438/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 -> e1607ef1a0546f5061a453264a19ed217d8c8fc9b28320eac9d61d4efa33b72e [2024-11-28 04:10:42,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:10:42,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:10:42,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:10:42,039 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:10:42,039 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:10:42,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-fpi/s3if.c [2024-11-28 04:10:45,136 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/data/22b116cb7/17354d11167c45348626a03c6294bab1/FLAGbb8663cd7 [2024-11-28 04:10:45,385 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:10:45,386 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/sv-benchmarks/c/array-fpi/s3if.c [2024-11-28 04:10:45,396 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/data/22b116cb7/17354d11167c45348626a03c6294bab1/FLAGbb8663cd7 [2024-11-28 04:10:45,422 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/data/22b116cb7/17354d11167c45348626a03c6294bab1 [2024-11-28 04:10:45,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:10:45,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:10:45,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:10:45,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:10:45,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:10:45,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f4706d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45, skipping insertion in model container [2024-11-28 04:10:45,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,456 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:10:45,634 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_dca5112b-b8ca-4cf8-8076-296873445438/sv-benchmarks/c/array-fpi/s3if.c[587,600] [2024-11-28 04:10:45,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:10:45,675 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:10:45,692 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_dca5112b-b8ca-4cf8-8076-296873445438/sv-benchmarks/c/array-fpi/s3if.c[587,600] [2024-11-28 04:10:45,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:10:45,732 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:10:45,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45 WrapperNode [2024-11-28 04:10:45,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:10:45,736 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:10:45,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:10:45,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:10:45,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,786 INFO L138 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2024-11-28 04:10:45,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:10:45,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:10:45,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:10:45,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:10:45,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,818 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 4, 7, 6]. 37 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 0, 7, 0]. The 4 writes are split as follows [0, 1, 0, 3]. [2024-11-28 04:10:45,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,828 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,828 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,832 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:10:45,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:10:45,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:10:45,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:10:45,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (1/1) ... [2024-11-28 04:10:45,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:10:45,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:45,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:10:45,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:10:45,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:10:45,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:10:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:10:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:10:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:10:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:10:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:10:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:10:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:10:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:10:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:10:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:10:45,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:10:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:10:45,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:10:45,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:10:45,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:10:45,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:10:46,014 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:10:46,016 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:10:46,180 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-28 04:10:46,180 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:10:46,190 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:10:46,190 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:10:46,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:10:46 BoogieIcfgContainer [2024-11-28 04:10:46,191 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:10:46,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:10:46,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:10:46,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:10:46,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:10:45" (1/3) ... [2024-11-28 04:10:46,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f4e4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:10:46, skipping insertion in model container [2024-11-28 04:10:46,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:45" (2/3) ... [2024-11-28 04:10:46,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f4e4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:10:46, skipping insertion in model container [2024-11-28 04:10:46,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:10:46" (3/3) ... [2024-11-28 04:10:46,202 INFO L128 eAbstractionObserver]: Analyzing ICFG s3if.c [2024-11-28 04:10:46,218 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:10:46,220 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG s3if.c that has 1 procedures, 20 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:10:46,274 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:10:46,286 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;@5ee40a7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:10:46,287 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:10:46,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:10:46,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:46,297 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:46,297 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:46,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:46,303 INFO L85 PathProgramCache]: Analyzing trace with hash 413981309, now seen corresponding path program 1 times [2024-11-28 04:10:46,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:46,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344703775] [2024-11-28 04:10:46,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:46,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:46,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:46,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344703775] [2024-11-28 04:10:46,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344703775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:46,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:46,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:10:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094959722] [2024-11-28 04:10:46,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:46,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:10:46,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:46,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:10:46,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:10:46,507 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:46,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:46,521 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2024-11-28 04:10:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:10:46,523 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 04:10:46,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:46,533 INFO L225 Difference]: With dead ends: 36 [2024-11-28 04:10:46,533 INFO L226 Difference]: Without dead ends: 16 [2024-11-28 04:10:46,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:10:46,539 INFO L435 NwaCegarLoop]: 23 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, 23 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 [2024-11-28 04:10:46,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:10:46,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-28 04:10:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-28 04:10:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-28 04:10:46,576 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2024-11-28 04:10:46,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:46,577 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-28 04:10:46,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:46,577 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-28 04:10:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:10:46,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:46,578 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:46,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:10:46,578 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:46,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash -395365317, now seen corresponding path program 1 times [2024-11-28 04:10:46,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:46,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377093648] [2024-11-28 04:10:46,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:46,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:46,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:46,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377093648] [2024-11-28 04:10:46,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377093648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:46,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:46,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:10:46,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104972811] [2024-11-28 04:10:46,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:46,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:10:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:46,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:10:46,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:10:46,826 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:46,919 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2024-11-28 04:10:46,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:10:46,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 04:10:46,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:46,921 INFO L225 Difference]: With dead ends: 31 [2024-11-28 04:10:46,921 INFO L226 Difference]: Without dead ends: 22 [2024-11-28 04:10:46,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:10:46,922 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:46,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 10 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:10:46,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-28 04:10:46,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2024-11-28 04:10:46,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-28 04:10:46,931 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2024-11-28 04:10:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:46,931 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-28 04:10:46,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-28 04:10:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 04:10:46,932 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:46,932 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:46,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:10:46,933 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:46,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:46,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1375309479, now seen corresponding path program 1 times [2024-11-28 04:10:46,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:46,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796537826] [2024-11-28 04:10:46,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:46,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:47,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:47,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796537826] [2024-11-28 04:10:47,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796537826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:47,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585820142] [2024-11-28 04:10:47,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:47,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:47,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:47,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:47,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:10:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:48,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:10:48,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:48,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:10:48,358 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 19 treesize of output 11 [2024-11-28 04:10:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:48,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:48,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585820142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:48,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:48,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2024-11-28 04:10:48,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434167105] [2024-11-28 04:10:48,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:48,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:10:48,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:48,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:10:48,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:10:48,648 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:49,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:49,096 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-11-28 04:10:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:10:49,098 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-28 04:10:49,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:49,099 INFO L225 Difference]: With dead ends: 37 [2024-11-28 04:10:49,099 INFO L226 Difference]: Without dead ends: 33 [2024-11-28 04:10:49,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:10:49,100 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:49,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 44 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:10:49,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-28 04:10:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2024-11-28 04:10:49,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:49,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-28 04:10:49,110 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 17 [2024-11-28 04:10:49,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:49,111 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-28 04:10:49,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-28 04:10:49,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 04:10:49,111 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:49,112 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:49,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:10:49,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:49,312 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:49,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1432567781, now seen corresponding path program 1 times [2024-11-28 04:10:49,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:49,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132248315] [2024-11-28 04:10:49,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:49,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:49,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:49,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132248315] [2024-11-28 04:10:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132248315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120816815] [2024-11-28 04:10:49,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:49,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:49,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:49,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:49,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:10:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:49,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:10:49,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:49,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:10:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:49,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:49,839 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 14 treesize of output 12 [2024-11-28 04:10:49,843 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 14 treesize of output 12 [2024-11-28 04:10:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:49,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120816815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:49,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:49,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-28 04:10:49,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615043229] [2024-11-28 04:10:49,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:49,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:10:49,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:49,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:10:49,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:10:49,858 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:49,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:49,941 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2024-11-28 04:10:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:10:49,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-28 04:10:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:49,944 INFO L225 Difference]: With dead ends: 43 [2024-11-28 04:10:49,944 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 04:10:49,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:10:49,945 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:49,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 44 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:10:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 04:10:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-28 04:10:49,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:49,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-28 04:10:49,957 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2024-11-28 04:10:49,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:49,957 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-28 04:10:49,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:49,957 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-28 04:10:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:10:49,957 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:49,958 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:49,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:10:50,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:50,158 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:50,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:50,159 INFO L85 PathProgramCache]: Analyzing trace with hash -678331989, now seen corresponding path program 2 times [2024-11-28 04:10:50,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:50,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504326498] [2024-11-28 04:10:50,159 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:10:50,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:50,197 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:10:50,198 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:50,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:50,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504326498] [2024-11-28 04:10:50,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504326498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:50,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390707800] [2024-11-28 04:10:50,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:10:50,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:50,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:50,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:50,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:10:50,415 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:10:50,415 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:50,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:10:50,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:50,496 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:50,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390707800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:50,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:50,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 04:10:50,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071538210] [2024-11-28 04:10:50,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:50,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:10:50,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:50,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:10:50,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:10:50,569 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:50,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:50,767 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2024-11-28 04:10:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:10:50,768 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-28 04:10:50,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:50,768 INFO L225 Difference]: With dead ends: 37 [2024-11-28 04:10:50,769 INFO L226 Difference]: Without dead ends: 33 [2024-11-28 04:10:50,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:10:50,771 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:50,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 30 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:10:50,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-28 04:10:50,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2024-11-28 04:10:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-28 04:10:50,783 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2024-11-28 04:10:50,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:50,784 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-28 04:10:50,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:50,784 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-28 04:10:50,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:10:50,785 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:50,786 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:50,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:10:50,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:50,987 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:50,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:50,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1591342863, now seen corresponding path program 3 times [2024-11-28 04:10:50,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:50,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216086636] [2024-11-28 04:10:50,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:10:50,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:51,021 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:10:51,021 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:51,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:51,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216086636] [2024-11-28 04:10:51,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216086636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:51,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356240188] [2024-11-28 04:10:51,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:10:51,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:51,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:51,133 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:51,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:10:51,208 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:10:51,209 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:51,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:10:51,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:51,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:51,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356240188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:51,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:51,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 04:10:51,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593955945] [2024-11-28 04:10:51,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:51,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:10:51,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:51,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:10:51,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:10:51,332 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:51,432 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-11-28 04:10:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:10:51,433 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-28 04:10:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:51,433 INFO L225 Difference]: With dead ends: 42 [2024-11-28 04:10:51,433 INFO L226 Difference]: Without dead ends: 28 [2024-11-28 04:10:51,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:10:51,434 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:51,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:10:51,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-28 04:10:51,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2024-11-28 04:10:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2024-11-28 04:10:51,440 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2024-11-28 04:10:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:51,441 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2024-11-28 04:10:51,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:51,441 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2024-11-28 04:10:51,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:10:51,441 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:51,441 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:51,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:10:51,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:51,642 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:51,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:51,642 INFO L85 PathProgramCache]: Analyzing trace with hash 817676307, now seen corresponding path program 4 times [2024-11-28 04:10:51,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:51,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4929106] [2024-11-28 04:10:51,643 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:10:51,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:51,669 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:10:51,669 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:52,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:52,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4929106] [2024-11-28 04:10:52,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4929106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:52,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188697168] [2024-11-28 04:10:52,291 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:10:52,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:52,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:52,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:52,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:10:52,375 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:10:52,375 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:52,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:10:52,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:52,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:10:52,608 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 19 treesize of output 11 [2024-11-28 04:10:52,937 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 19 treesize of output 11 [2024-11-28 04:10:52,969 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 04:10:52,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2024-11-28 04:10:53,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:53,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:53,462 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 04:10:53,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-28 04:10:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:53,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188697168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:53,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:53,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2024-11-28 04:10:53,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572452597] [2024-11-28 04:10:53,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:53,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 04:10:53,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:53,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 04:10:53,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:10:53,880 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 35 states, 35 states have (on average 1.6) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:56,034 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2024-11-28 04:10:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 04:10:56,036 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-28 04:10:56,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:56,037 INFO L225 Difference]: With dead ends: 67 [2024-11-28 04:10:56,037 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 04:10:56,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=442, Invalid=2638, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 04:10:56,042 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:56,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 86 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:10:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 04:10:56,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2024-11-28 04:10:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2024-11-28 04:10:56,057 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 23 [2024-11-28 04:10:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:56,058 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2024-11-28 04:10:56,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2024-11-28 04:10:56,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:10:56,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:56,059 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:56,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:10:56,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:56,263 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:56,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:56,264 INFO L85 PathProgramCache]: Analyzing trace with hash 874934609, now seen corresponding path program 1 times [2024-11-28 04:10:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:56,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064147334] [2024-11-28 04:10:56,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:56,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:56,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:56,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064147334] [2024-11-28 04:10:56,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064147334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:56,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794784493] [2024-11-28 04:10:56,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:56,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:56,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:56,629 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:56,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:10:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:56,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:10:56,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:56,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:10:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:56,799 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:56,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-28 04:10:56,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-28 04:10:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:56,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794784493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:56,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:56,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-28 04:10:56,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009361848] [2024-11-28 04:10:56,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:56,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:10:56,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:56,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:10:56,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:10:56,894 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:57,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:57,016 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2024-11-28 04:10:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:10:57,017 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-28 04:10:57,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:57,018 INFO L225 Difference]: With dead ends: 74 [2024-11-28 04:10:57,018 INFO L226 Difference]: Without dead ends: 52 [2024-11-28 04:10:57,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:10:57,019 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:57,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 56 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:10:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-28 04:10:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-11-28 04:10:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-11-28 04:10:57,030 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 23 [2024-11-28 04:10:57,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:57,030 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-11-28 04:10:57,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:57,030 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-11-28 04:10:57,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:10:57,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:57,031 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:57,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:10:57,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:10:57,231 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:57,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash 353458199, now seen corresponding path program 5 times [2024-11-28 04:10:57,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:57,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204364285] [2024-11-28 04:10:57,232 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:10:57,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:57,253 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 04:10:57,253 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:57,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:57,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204364285] [2024-11-28 04:10:57,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204364285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:57,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205055994] [2024-11-28 04:10:57,354 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:10:57,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:57,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:57,357 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:57,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:10:57,439 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 04:10:57,439 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:57,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:10:57,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:57,524 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:57,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205055994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:57,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:57,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 04:10:57,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874560757] [2024-11-28 04:10:57,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:57,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:10:57,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:57,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:10:57,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:10:57,590 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:57,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:57,826 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2024-11-28 04:10:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:10:57,826 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-28 04:10:57,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:57,829 INFO L225 Difference]: With dead ends: 61 [2024-11-28 04:10:57,829 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 04:10:57,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:10:57,830 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:57,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 34 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:10:57,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 04:10:57,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2024-11-28 04:10:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-11-28 04:10:57,845 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 25 [2024-11-28 04:10:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:57,845 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-11-28 04:10:57,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-11-28 04:10:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 04:10:57,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:57,850 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:57,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:10:58,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:58,051 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:58,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash -537377863, now seen corresponding path program 2 times [2024-11-28 04:10:58,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:58,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272722789] [2024-11-28 04:10:58,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:10:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:58,073 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:10:58,073 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:58,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:58,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272722789] [2024-11-28 04:10:58,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272722789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:58,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734104094] [2024-11-28 04:10:58,201 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:10:58,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:58,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:58,204 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:58,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:10:58,283 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:10:58,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:58,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:10:58,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:58,371 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:58,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:58,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734104094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:58,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:58,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 04:10:58,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156424473] [2024-11-28 04:10:58,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:58,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:10:58,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:58,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:10:58,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:10:58,437 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:58,555 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2024-11-28 04:10:58,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:10:58,556 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-28 04:10:58,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:58,556 INFO L225 Difference]: With dead ends: 66 [2024-11-28 04:10:58,556 INFO L226 Difference]: Without dead ends: 34 [2024-11-28 04:10:58,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:10:58,557 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:58,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 32 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:10:58,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-28 04:10:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2024-11-28 04:10:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-28 04:10:58,563 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 27 [2024-11-28 04:10:58,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:58,563 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-28 04:10:58,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:58,564 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-28 04:10:58,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 04:10:58,564 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:58,564 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:58,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:10:58,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:10:58,765 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:58,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash -720402305, now seen corresponding path program 6 times [2024-11-28 04:10:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:58,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182742600] [2024-11-28 04:10:58,766 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:10:58,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:58,793 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-28 04:10:58,793 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:10:59,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:59,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182742600] [2024-11-28 04:10:59,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182742600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:59,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876680315] [2024-11-28 04:10:59,528 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:10:59,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:59,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:59,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:59,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:10:59,621 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-28 04:10:59,621 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:59,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 04:10:59,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:59,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:10:59,683 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 19 treesize of output 11 [2024-11-28 04:10:59,828 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 19 treesize of output 11 [2024-11-28 04:11:00,048 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 19 treesize of output 11 [2024-11-28 04:11:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:11:00,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:00,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:00,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 13 [2024-11-28 04:11:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:11:00,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876680315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:00,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:00,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2024-11-28 04:11:00,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310694530] [2024-11-28 04:11:00,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:00,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:11:00,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:00,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:11:00,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1093, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:11:00,795 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:01,722 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2024-11-28 04:11:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:11:01,723 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-28 04:11:01,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:01,723 INFO L225 Difference]: With dead ends: 46 [2024-11-28 04:11:01,723 INFO L226 Difference]: Without dead ends: 41 [2024-11-28 04:11:01,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=395, Invalid=2467, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 04:11:01,725 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:01,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 66 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:11:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-28 04:11:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2024-11-28 04:11:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-11-28 04:11:01,731 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2024-11-28 04:11:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:01,731 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-11-28 04:11:01,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:01,732 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-11-28 04:11:01,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 04:11:01,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:01,732 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:01,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:11:01,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:11:01,936 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:01,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:01,937 INFO L85 PathProgramCache]: Analyzing trace with hash -663144003, now seen corresponding path program 3 times [2024-11-28 04:11:01,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:01,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949851214] [2024-11-28 04:11:01,937 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:11:01,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:01,971 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:11:01,971 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:11:02,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:02,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949851214] [2024-11-28 04:11:02,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949851214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:02,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313608929] [2024-11-28 04:11:02,198 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:11:02,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:02,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:02,202 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:02,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:11:02,293 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:11:02,293 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:02,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:11:02,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:02,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 04:11:02,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:02,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-28 04:11:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:11:02,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:02,527 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 [2024-11-28 04:11:02,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-28 04:11:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:11:02,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313608929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:02,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:02,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2024-11-28 04:11:02,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136021058] [2024-11-28 04:11:02,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:02,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:11:02,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:02,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:11:02,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:11:02,541 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:02,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:02,700 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-11-28 04:11:02,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:11:02,700 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-28 04:11:02,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:02,701 INFO L225 Difference]: With dead ends: 38 [2024-11-28 04:11:02,701 INFO L226 Difference]: Without dead ends: 34 [2024-11-28 04:11:02,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:11:02,702 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:02,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 23 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:11:02,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-28 04:11:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-28 04:11:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2024-11-28 04:11:02,710 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 29 [2024-11-28 04:11:02,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:02,710 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2024-11-28 04:11:02,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:02,710 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2024-11-28 04:11:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 04:11:02,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:02,711 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:02,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:02,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:02,915 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:02,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:02,916 INFO L85 PathProgramCache]: Analyzing trace with hash -121493723, now seen corresponding path program 4 times [2024-11-28 04:11:02,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:02,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503489103] [2024-11-28 04:11:02,916 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:11:02,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:02,934 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:11:02,934 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:03,324 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:11:03,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:03,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503489103] [2024-11-28 04:11:03,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503489103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:03,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215163575] [2024-11-28 04:11:03,325 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:11:03,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:03,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:03,327 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:03,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:11:03,427 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:11:03,427 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:03,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:11:03,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:03,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-28 04:11:03,479 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 36 treesize of output 16 [2024-11-28 04:11:03,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:03,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-28 04:11:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:11:03,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:11:03,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215163575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:03,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:03,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 16 [2024-11-28 04:11:03,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376612308] [2024-11-28 04:11:03,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:03,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:11:03,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:03,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:11:03,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:11:03,743 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:04,176 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2024-11-28 04:11:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:11:04,177 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-28 04:11:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:04,177 INFO L225 Difference]: With dead ends: 44 [2024-11-28 04:11:04,177 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 04:11:04,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:11:04,178 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:04,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 34 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:11:04,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 04:11:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2024-11-28 04:11:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-11-28 04:11:04,188 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 33 [2024-11-28 04:11:04,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:04,189 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-11-28 04:11:04,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-11-28 04:11:04,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 04:11:04,190 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:04,190 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:04,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:11:04,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:04,390 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:04,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:04,391 INFO L85 PathProgramCache]: Analyzing trace with hash -964288371, now seen corresponding path program 5 times [2024-11-28 04:11:04,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:04,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455535624] [2024-11-28 04:11:04,391 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:11:04,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:04,413 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:11:04,413 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:04,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:04,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455535624] [2024-11-28 04:11:04,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455535624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:04,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971678576] [2024-11-28 04:11:04,579 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:11:04,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:04,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:04,584 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:04,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:11:04,720 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:11:04,720 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:04,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:11:04,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:04,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:04,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971678576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:04,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:04,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2024-11-28 04:11:04,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43409345] [2024-11-28 04:11:04,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:04,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:11:04,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:04,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:11:04,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:11:04,986 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:05,273 INFO L93 Difference]: Finished difference Result 131 states and 150 transitions. [2024-11-28 04:11:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:11:05,273 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-28 04:11:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:05,274 INFO L225 Difference]: With dead ends: 131 [2024-11-28 04:11:05,274 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 04:11:05,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:11:05,275 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 81 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:05,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 39 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:11:05,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 04:11:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 42. [2024-11-28 04:11:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-28 04:11:05,286 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 37 [2024-11-28 04:11:05,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:05,286 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-28 04:11:05,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-28 04:11:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 04:11:05,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:05,287 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:05,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:05,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:11:05,492 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:05,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:05,492 INFO L85 PathProgramCache]: Analyzing trace with hash 287994261, now seen corresponding path program 6 times [2024-11-28 04:11:05,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:05,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638634825] [2024-11-28 04:11:05,493 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:11:05,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:05,526 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 04:11:05,526 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 27 proven. 35 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:11:05,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:05,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638634825] [2024-11-28 04:11:05,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638634825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:05,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193183803] [2024-11-28 04:11:05,966 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:11:05,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:05,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:05,969 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:05,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:11:06,122 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 04:11:06,122 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:06,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:11:06,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:06,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:11:06,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:06,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 04:11:06,209 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 04:11:06,210 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 21 treesize of output 20 [2024-11-28 04:11:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:11:09,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:09,571 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 23 treesize of output 21 [2024-11-28 04:11:09,577 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 42 treesize of output 38 [2024-11-28 04:11:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:11:09,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193183803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:09,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:09,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2024-11-28 04:11:09,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424143828] [2024-11-28 04:11:09,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:09,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:11:09,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:09,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:11:09,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:11:09,679 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:09,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:09,945 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2024-11-28 04:11:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:11:09,945 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-28 04:11:09,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:09,946 INFO L225 Difference]: With dead ends: 61 [2024-11-28 04:11:09,946 INFO L226 Difference]: Without dead ends: 47 [2024-11-28 04:11:09,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:11:09,947 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 38 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:09,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 77 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:11:09,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-28 04:11:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-28 04:11:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-11-28 04:11:09,963 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 41 [2024-11-28 04:11:09,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:09,964 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-11-28 04:11:09,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:09,964 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-11-28 04:11:09,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 04:11:09,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:09,965 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:09,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:10,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:10,166 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:10,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1099202051, now seen corresponding path program 7 times [2024-11-28 04:11:10,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:10,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398616336] [2024-11-28 04:11:10,166 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:11:10,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 49 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:10,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:10,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398616336] [2024-11-28 04:11:10,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398616336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:10,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871336552] [2024-11-28 04:11:10,420 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:11:10,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:10,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:10,423 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:10,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:11:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:10,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:11:10,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:10,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:10,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871336552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:10,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:10,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-28 04:11:10,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478578161] [2024-11-28 04:11:10,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:10,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:11:10,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:10,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:11:10,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:11:10,989 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:11,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:11,230 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2024-11-28 04:11:11,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:11:11,231 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-28 04:11:11,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:11,232 INFO L225 Difference]: With dead ends: 125 [2024-11-28 04:11:11,232 INFO L226 Difference]: Without dead ends: 77 [2024-11-28 04:11:11,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 71 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:11:11,233 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 71 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:11,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 35 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:11:11,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-28 04:11:11,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 48. [2024-11-28 04:11:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-28 04:11:11,245 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 45 [2024-11-28 04:11:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:11,246 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-28 04:11:11,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:11,246 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-28 04:11:11,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 04:11:11,246 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:11,247 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:11,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:11,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:11,448 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:11,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2020311295, now seen corresponding path program 8 times [2024-11-28 04:11:11,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:11,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884368462] [2024-11-28 04:11:11,448 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:11,481 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:11:11,481 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 57 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:11:12,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:12,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884368462] [2024-11-28 04:11:12,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884368462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:12,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103986953] [2024-11-28 04:11:12,020 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:12,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:12,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:12,022 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:12,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:11:12,130 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:11:12,130 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:12,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 04:11:12,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:12,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:11:12,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:12,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 04:11:12,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:12,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 04:11:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:11:12,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:12,698 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 30 treesize of output 28 [2024-11-28 04:11:12,704 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 198 treesize of output 190 [2024-11-28 04:11:12,846 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 57 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:11:12,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103986953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:12,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:12,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-11-28 04:11:12,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723465354] [2024-11-28 04:11:12,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:12,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:11:12,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:12,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:11:12,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:11:12,848 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:13,335 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2024-11-28 04:11:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:11:13,335 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 04:11:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:13,336 INFO L225 Difference]: With dead ends: 72 [2024-11-28 04:11:13,336 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 04:11:13,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:11:13,337 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 30 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:13,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 113 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:11:13,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 04:11:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2024-11-28 04:11:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2024-11-28 04:11:13,352 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 47 [2024-11-28 04:11:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:13,352 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2024-11-28 04:11:13,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2024-11-28 04:11:13,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:11:13,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:13,353 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:13,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:11:13,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:13,557 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:13,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1391920791, now seen corresponding path program 9 times [2024-11-28 04:11:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:13,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406583036] [2024-11-28 04:11:13,558 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:11:13,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:13,617 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:11:13,617 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 20 proven. 71 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:11:14,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:14,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406583036] [2024-11-28 04:11:14,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406583036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:14,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605298480] [2024-11-28 04:11:14,078 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:11:14,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:14,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:14,081 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:14,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:11:14,220 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:11:14,220 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:14,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:11:14,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:14,252 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 15 treesize of output 11 [2024-11-28 04:11:14,291 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 35 treesize of output 15 [2024-11-28 04:11:14,372 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 31 treesize of output 15 [2024-11-28 04:11:14,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:14,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2024-11-28 04:11:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 20 proven. 63 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 04:11:14,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 20 proven. 63 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 04:11:14,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605298480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:14,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:14,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 22 [2024-11-28 04:11:14,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066528977] [2024-11-28 04:11:14,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:14,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:11:14,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:14,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:11:14,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:11:14,778 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:15,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:15,692 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2024-11-28 04:11:15,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 04:11:15,692 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-28 04:11:15,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:15,693 INFO L225 Difference]: With dead ends: 70 [2024-11-28 04:11:15,693 INFO L226 Difference]: Without dead ends: 66 [2024-11-28 04:11:15,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=438, Invalid=1368, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 04:11:15,694 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:15,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 49 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:11:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-28 04:11:15,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2024-11-28 04:11:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2024-11-28 04:11:15,726 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 51 [2024-11-28 04:11:15,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:15,727 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2024-11-28 04:11:15,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:15,727 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2024-11-28 04:11:15,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 04:11:15,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:15,727 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:15,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:11:15,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:15,928 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:15,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2060595409, now seen corresponding path program 10 times [2024-11-28 04:11:15,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:15,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646739683] [2024-11-28 04:11:15,928 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:11:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:15,949 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:11:15,949 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:11:16,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:16,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646739683] [2024-11-28 04:11:16,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646739683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:16,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820909195] [2024-11-28 04:11:16,538 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:11:16,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:16,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:16,541 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:16,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:11:16,659 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:11:16,659 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:16,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 04:11:16,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:16,668 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 16 treesize of output 12 [2024-11-28 04:11:16,677 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 [2024-11-28 04:11:16,690 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 0 case distinctions, treesize of input 38 treesize of output 16 [2024-11-28 04:11:16,730 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 36 treesize of output 16 [2024-11-28 04:11:17,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:17,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2024-11-28 04:11:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 21 proven. 129 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:11:17,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 21 proven. 129 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:11:17,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820909195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:17,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:17,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 20] total 40 [2024-11-28 04:11:17,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863593727] [2024-11-28 04:11:17,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:17,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 04:11:17,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:17,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 04:11:17,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1333, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:11:17,817 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 40 states, 40 states have (on average 2.575) internal successors, (103), 40 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:29,785 INFO L93 Difference]: Finished difference Result 279 states and 328 transitions. [2024-11-28 04:11:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2024-11-28 04:11:29,785 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.575) internal successors, (103), 40 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-28 04:11:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:29,786 INFO L225 Difference]: With dead ends: 279 [2024-11-28 04:11:29,787 INFO L226 Difference]: Without dead ends: 275 [2024-11-28 04:11:29,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15295 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=6544, Invalid=38188, Unknown=0, NotChecked=0, Total=44732 [2024-11-28 04:11:29,795 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 138 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:29,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 73 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 04:11:29,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-28 04:11:29,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 60. [2024-11-28 04:11:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-11-28 04:11:29,820 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 55 [2024-11-28 04:11:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:29,820 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-11-28 04:11:29,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.575) internal successors, (103), 40 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-11-28 04:11:29,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 04:11:29,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:29,821 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:29,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:30,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:30,025 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:30,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1222734905, now seen corresponding path program 11 times [2024-11-28 04:11:30,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:30,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581553770] [2024-11-28 04:11:30,026 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:11:30,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:30,066 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 04:11:30,066 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 153 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:30,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:30,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581553770] [2024-11-28 04:11:30,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581553770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:30,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185977548] [2024-11-28 04:11:30,415 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:11:30,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:30,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:30,418 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:30,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:11:30,691 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 04:11:30,692 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:30,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:11:30,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 153 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:31,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 153 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:31,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185977548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:31,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:31,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 33 [2024-11-28 04:11:31,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416931176] [2024-11-28 04:11:31,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:31,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 04:11:31,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:31,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 04:11:31,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:11:31,346 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:31,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:31,842 INFO L93 Difference]: Finished difference Result 259 states and 301 transitions. [2024-11-28 04:11:31,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 04:11:31,843 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-28 04:11:31,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:31,844 INFO L225 Difference]: With dead ends: 259 [2024-11-28 04:11:31,844 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 04:11:31,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 93 SyntacticMatches, 11 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=550, Invalid=1802, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 04:11:31,845 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 205 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:31,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 48 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:11:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 04:11:31,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 66. [2024-11-28 04:11:31,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2024-11-28 04:11:31,866 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 59 [2024-11-28 04:11:31,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:31,867 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2024-11-28 04:11:31,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:31,867 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2024-11-28 04:11:31,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 04:11:31,867 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:31,867 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:31,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:11:32,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:32,068 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:32,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:32,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1880288443, now seen corresponding path program 12 times [2024-11-28 04:11:32,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:32,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946862762] [2024-11-28 04:11:32,068 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:11:32,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:32,117 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-28 04:11:32,117 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 39 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:33,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:33,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946862762] [2024-11-28 04:11:33,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946862762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:33,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929728315] [2024-11-28 04:11:33,290 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:11:33,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:33,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:33,292 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:33,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:11:33,664 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-28 04:11:33,665 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:33,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 04:11:33,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:33,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:11:33,869 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 19 treesize of output 18 [2024-11-28 04:11:33,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:33,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-28 04:11:33,998 INFO L349 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2024-11-28 04:11:33,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 29 [2024-11-28 04:11:34,238 INFO L349 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2024-11-28 04:11:34,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 42 [2024-11-28 04:11:35,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:35,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2024-11-28 04:11:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 33 proven. 201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:35,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:36,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2024-11-28 04:11:36,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-28 04:11:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:36,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929728315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:36,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:36,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 28] total 71 [2024-11-28 04:11:36,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120591899] [2024-11-28 04:11:36,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:36,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-28 04:11:36,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:36,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-28 04:11:36,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=657, Invalid=4313, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 04:11:36,838 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 71 states, 71 states have (on average 2.408450704225352) internal successors, (171), 71 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:39,150 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2024-11-28 04:11:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 04:11:39,151 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.408450704225352) internal successors, (171), 71 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-28 04:11:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:39,152 INFO L225 Difference]: With dead ends: 118 [2024-11-28 04:11:39,152 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 04:11:39,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3498 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1684, Invalid=9872, Unknown=0, NotChecked=0, Total=11556 [2024-11-28 04:11:39,154 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 246 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:39,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 108 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:11:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 04:11:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2024-11-28 04:11:39,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.095890410958904) internal successors, (80), 73 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2024-11-28 04:11:39,178 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 65 [2024-11-28 04:11:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:39,179 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2024-11-28 04:11:39,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.408450704225352) internal successors, (171), 71 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2024-11-28 04:11:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 04:11:39,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:39,179 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:39,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:11:39,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:39,380 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:39,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash 756944917, now seen corresponding path program 13 times [2024-11-28 04:11:39,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:39,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844084512] [2024-11-28 04:11:39,381 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:11:39,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:39,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844084512] [2024-11-28 04:11:39,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844084512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339669806] [2024-11-28 04:11:39,934 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:11:39,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:39,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:39,937 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:39,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:11:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:40,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:11:40,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 227 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:11:40,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 227 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:11:40,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339669806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:40,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:40,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 36 [2024-11-28 04:11:40,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555356595] [2024-11-28 04:11:40,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:40,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:11:40,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:40,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:11:40,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=957, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:11:40,961 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 36 states, 36 states have (on average 3.361111111111111) internal successors, (121), 36 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:41,432 INFO L93 Difference]: Finished difference Result 204 states and 232 transitions. [2024-11-28 04:11:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:11:41,433 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.361111111111111) internal successors, (121), 36 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-28 04:11:41,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:41,434 INFO L225 Difference]: With dead ends: 204 [2024-11-28 04:11:41,434 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 04:11:41,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 115 SyntacticMatches, 19 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=483, Invalid=1497, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:11:41,436 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 103 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:41,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 50 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:11:41,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 04:11:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 76. [2024-11-28 04:11:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 75 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:41,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2024-11-28 04:11:41,462 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 73 [2024-11-28 04:11:41,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:41,462 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2024-11-28 04:11:41,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.361111111111111) internal successors, (121), 36 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:41,462 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2024-11-28 04:11:41,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:11:41,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:41,463 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:41,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:41,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:41,667 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:41,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:41,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2085166873, now seen corresponding path program 14 times [2024-11-28 04:11:41,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:41,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704299865] [2024-11-28 04:11:41,668 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:41,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:41,695 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:11:41,695 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 194 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:42,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:42,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704299865] [2024-11-28 04:11:42,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704299865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:42,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622663343] [2024-11-28 04:11:42,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:42,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:42,281 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:42,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:11:42,464 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:11:42,464 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:42,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:11:42,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 231 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:43,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 231 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:43,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622663343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:43,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:43,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-11-28 04:11:43,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873728979] [2024-11-28 04:11:43,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:43,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 04:11:43,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:43,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 04:11:43,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:11:43,459 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:43,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:43,960 INFO L93 Difference]: Finished difference Result 245 states and 282 transitions. [2024-11-28 04:11:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:11:43,961 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-28 04:11:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:43,962 INFO L225 Difference]: With dead ends: 245 [2024-11-28 04:11:43,962 INFO L226 Difference]: Without dead ends: 145 [2024-11-28 04:11:43,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 116 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 04:11:43,963 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 147 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:43,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 56 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:11:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-28 04:11:43,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 78. [2024-11-28 04:11:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 77 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2024-11-28 04:11:43,982 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 75 [2024-11-28 04:11:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:43,983 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2024-11-28 04:11:43,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:43,983 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2024-11-28 04:11:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 04:11:43,983 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:43,983 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:43,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:11:44,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:11:44,184 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:44,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:44,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1393787619, now seen corresponding path program 15 times [2024-11-28 04:11:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:44,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181168415] [2024-11-28 04:11:44,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:11:44,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:44,252 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 04:11:44,252 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 63 proven. 187 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-28 04:11:44,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:44,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181168415] [2024-11-28 04:11:44,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181168415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:44,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119313672] [2024-11-28 04:11:44,924 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:11:44,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:44,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:44,926 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:44,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:11:45,398 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 04:11:45,398 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:45,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 04:11:45,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:45,408 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 16 treesize of output 12 [2024-11-28 04:11:45,418 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 [2024-11-28 04:11:45,428 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 [2024-11-28 04:11:45,435 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 [2024-11-28 04:11:45,468 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 36 treesize of output 16 [2024-11-28 04:11:50,254 INFO L349 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2024-11-28 04:11:50,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 28 [2024-11-28 04:11:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 93 proven. 179 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:11:50,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 96 proven. 176 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:11:50,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119313672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:50,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:50,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 26 [2024-11-28 04:11:50,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998643210] [2024-11-28 04:11:50,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:50,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:11:50,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:50,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:11:50,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=556, Unknown=2, NotChecked=0, Total=650 [2024-11-28 04:11:50,708 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:56,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:56,209 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2024-11-28 04:11:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-28 04:11:56,210 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-28 04:11:56,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:56,211 INFO L225 Difference]: With dead ends: 160 [2024-11-28 04:11:56,211 INFO L226 Difference]: Without dead ends: 156 [2024-11-28 04:11:56,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 142 SyntacticMatches, 4 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2240 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1851, Invalid=7653, Unknown=2, NotChecked=0, Total=9506 [2024-11-28 04:11:56,213 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:56,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 61 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:11:56,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-28 04:11:56,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 82. [2024-11-28 04:11:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 81 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2024-11-28 04:11:56,262 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 77 [2024-11-28 04:11:56,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:56,262 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2024-11-28 04:11:56,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2024-11-28 04:11:56,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 04:11:56,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:56,263 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:56,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 04:11:56,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:11:56,467 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:56,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:56,468 INFO L85 PathProgramCache]: Analyzing trace with hash 287619717, now seen corresponding path program 16 times [2024-11-28 04:11:56,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:56,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42592581] [2024-11-28 04:11:56,468 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:11:56,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:56,495 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:11:56,496 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 66 proven. 241 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-28 04:11:57,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:57,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42592581] [2024-11-28 04:11:57,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42592581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:57,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746361500] [2024-11-28 04:11:57,406 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:11:57,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:57,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:57,409 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:57,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:11:57,586 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:11:57,586 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:57,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 04:11:57,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:57,597 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 16 treesize of output 12 [2024-11-28 04:11:57,611 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 [2024-11-28 04:11:57,624 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 [2024-11-28 04:11:57,633 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 [2024-11-28 04:11:57,644 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 [2024-11-28 04:11:57,721 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 36 treesize of output 16 [2024-11-28 04:11:58,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:58,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2024-11-28 04:11:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 66 proven. 301 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:11:58,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 66 proven. 301 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:11:59,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746361500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:59,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:59,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26, 26] total 52 [2024-11-28 04:11:59,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851311228] [2024-11-28 04:11:59,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:59,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-28 04:11:59,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:59,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-28 04:11:59,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=2317, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 04:11:59,301 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 52 states, 52 states have (on average 2.75) internal successors, (143), 52 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:12:03,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:46,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:46,927 INFO L93 Difference]: Finished difference Result 1361 states and 1600 transitions. [2024-11-28 04:13:46,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 899 states. [2024-11-28 04:13:46,928 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.75) internal successors, (143), 52 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-28 04:13:46,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:46,933 INFO L225 Difference]: With dead ends: 1361 [2024-11-28 04:13:46,934 INFO L226 Difference]: Without dead ends: 1357 [2024-11-28 04:13:46,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1074 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 944 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399679 ImplicationChecksByTransitivity, 94.2s TimeCoverageRelationStatistics Valid=74277, Invalid=819693, Unknown=0, NotChecked=0, Total=893970 [2024-11-28 04:13:46,994 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 231 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 10557 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 10631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 10557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:46,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 91 Invalid, 10631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 10557 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2024-11-28 04:13:46,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2024-11-28 04:13:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 86. [2024-11-28 04:13:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1058823529411765) internal successors, (94), 85 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:47,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2024-11-28 04:13:47,062 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 81 [2024-11-28 04:13:47,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:47,063 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2024-11-28 04:13:47,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.75) internal successors, (143), 52 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:47,063 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2024-11-28 04:13:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:13:47,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:47,063 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:47,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:13:47,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 04:13:47,267 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:47,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:47,268 INFO L85 PathProgramCache]: Analyzing trace with hash -89127955, now seen corresponding path program 17 times [2024-11-28 04:13:47,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:47,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972194891] [2024-11-28 04:13:47,268 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:13:47,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:47,314 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-28 04:13:47,314 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 325 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:48,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:48,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972194891] [2024-11-28 04:13:48,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972194891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:48,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920372337] [2024-11-28 04:13:48,001 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:13:48,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:48,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:48,003 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:48,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:13:57,935 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-28 04:13:57,935 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:57,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 04:13:57,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 325 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:58,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 325 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:59,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920372337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:59,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:59,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 44 [2024-11-28 04:13:59,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933721293] [2024-11-28 04:13:59,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:59,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 04:13:59,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:59,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 04:13:59,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 04:13:59,030 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 44 states, 44 states have (on average 3.340909090909091) internal successors, (147), 44 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:00,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:00,172 INFO L93 Difference]: Finished difference Result 463 states and 544 transitions. [2024-11-28 04:14:00,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 04:14:00,173 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.340909090909091) internal successors, (147), 44 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-28 04:14:00,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:00,174 INFO L225 Difference]: With dead ends: 463 [2024-11-28 04:14:00,174 INFO L226 Difference]: Without dead ends: 211 [2024-11-28 04:14:00,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 132 SyntacticMatches, 22 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1014, Invalid=3678, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 04:14:00,176 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 473 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:00,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 36 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:14:00,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-28 04:14:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 90. [2024-11-28 04:14:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.101123595505618) internal successors, (98), 89 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2024-11-28 04:14:00,228 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 85 [2024-11-28 04:14:00,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:00,229 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2024-11-28 04:14:00,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.340909090909091) internal successors, (147), 44 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:00,229 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2024-11-28 04:14:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:14:00,229 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:00,229 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:00,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:14:00,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:14:00,430 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:14:00,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:00,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1935353077, now seen corresponding path program 18 times [2024-11-28 04:14:00,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:00,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964747320] [2024-11-28 04:14:00,430 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:14:00,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:00,505 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-28 04:14:00,505 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 91 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:02,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:02,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964747320] [2024-11-28 04:14:02,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964747320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:02,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763260499] [2024-11-28 04:14:02,884 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:14:02,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:02,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:02,887 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:02,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:14:05,854 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-28 04:14:05,854 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:05,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-28 04:14:05,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:06,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:14:06,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 04:14:06,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 04:14:06,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 04:14:06,446 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-28 04:14:06,446 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 27 treesize of output 15 [2024-11-28 04:14:06,514 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-11-28 04:14:06,514 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 35 treesize of output 19 [2024-11-28 04:14:06,586 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-28 04:14:06,586 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 31 treesize of output 19 [2024-11-28 04:14:07,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:14:07,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:14:07,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:14:07,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 11 [2024-11-28 04:14:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 52 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:08,069 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:45,716 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 132 treesize of output 126 [2024-11-28 04:14:45,742 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-28 04:14:45,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5566 treesize of output 5494 [2024-11-28 04:14:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 162 proven. 332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:46,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763260499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:46,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:46,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 36] total 92 [2024-11-28 04:14:46,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629136593] [2024-11-28 04:14:46,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:46,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-28 04:14:46,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:46,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-28 04:14:46,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1101, Invalid=7271, Unknown=0, NotChecked=0, Total=8372 [2024-11-28 04:14:46,097 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 92 states, 92 states have (on average 2.5) internal successors, (230), 92 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:53,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:53,577 INFO L93 Difference]: Finished difference Result 152 states and 173 transitions. [2024-11-28 04:14:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 04:14:53,578 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.5) internal successors, (230), 92 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-28 04:14:53,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:53,579 INFO L225 Difference]: With dead ends: 152 [2024-11-28 04:14:53,579 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 04:14:53,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5370 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=1929, Invalid=14327, Unknown=0, NotChecked=0, Total=16256 [2024-11-28 04:14:53,580 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 295 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 2480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:53,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 124 Invalid, 2480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 04:14:53,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 04:14:53,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 94. [2024-11-28 04:14:53,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.096774193548387) internal successors, (102), 93 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2024-11-28 04:14:53,644 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 89 [2024-11-28 04:14:53,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:53,644 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2024-11-28 04:14:53,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.5) internal successors, (230), 92 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:53,644 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2024-11-28 04:14:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:14:53,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:53,645 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:53,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 04:14:53,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:14:53,846 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:14:53,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1260026531, now seen corresponding path program 19 times [2024-11-28 04:14:53,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:53,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001489844] [2024-11-28 04:14:53,847 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:14:53,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 329 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:55,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:55,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001489844] [2024-11-28 04:14:55,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001489844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:55,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789491244] [2024-11-28 04:14:55,195 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:14:55,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:55,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:55,198 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:55,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:14:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:55,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:14:55,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 378 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:56,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 378 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:57,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789491244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:57,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:57,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-11-28 04:14:57,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652874742] [2024-11-28 04:14:57,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:57,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 04:14:57,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:57,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 04:14:57,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:14:57,896 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 47 states, 47 states have (on average 3.297872340425532) internal successors, (155), 47 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:59,177 INFO L93 Difference]: Finished difference Result 377 states and 442 transitions. [2024-11-28 04:14:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 04:14:59,178 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.297872340425532) internal successors, (155), 47 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-28 04:14:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:59,179 INFO L225 Difference]: With dead ends: 377 [2024-11-28 04:14:59,179 INFO L226 Difference]: Without dead ends: 217 [2024-11-28 04:14:59,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 143 SyntacticMatches, 27 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=853, Invalid=2687, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 04:14:59,180 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 257 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:59,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 38 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:14:59,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-28 04:14:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 96. [2024-11-28 04:14:59,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0947368421052632) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2024-11-28 04:14:59,220 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 93 [2024-11-28 04:14:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:59,220 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2024-11-28 04:14:59,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.297872340425532) internal successors, (155), 47 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2024-11-28 04:14:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:14:59,221 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:59,221 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:59,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 04:14:59,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:14:59,422 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:14:59,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:59,422 INFO L85 PathProgramCache]: Analyzing trace with hash -380179871, now seen corresponding path program 20 times [2024-11-28 04:14:59,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:59,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654396816] [2024-11-28 04:14:59,422 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:59,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:59,458 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:59,458 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 144 proven. 430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:15:02,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:02,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654396816] [2024-11-28 04:15:02,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654396816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:02,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867860294] [2024-11-28 04:15:02,055 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:15:02,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:02,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:02,056 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:02,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:15:02,250 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:15:02,250 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:02,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 04:15:02,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:02,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:15:03,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,075 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 21 treesize of output 20 [2024-11-28 04:15:03,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:03,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-28 04:15:03,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:03,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-28 04:15:03,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:03,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:03,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 47 [2024-11-28 04:15:04,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,241 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:04,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 47 [2024-11-28 04:15:04,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:04,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:04,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 47 [2024-11-28 04:15:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 231 proven. 271 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-28 04:15:13,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:24,513 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1796 Int) (v_ArrVal_1798 Int) (|v_ULTIMATE.start_main_~i~0#1_668| Int) (v_ArrVal_1800 Int) (|v_ULTIMATE.start_main_~i~0#1_667| Int)) (or (= 3 (select (store (store (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|) v_ArrVal_1796) (+ (* |v_ULTIMATE.start_main_~i~0#1_668| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1798) (+ (* |v_ULTIMATE.start_main_~i~0#1_667| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1800) (+ 28 |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_667| (+ |v_ULTIMATE.start_main_~i~0#1_668| 1)) (< |v_ULTIMATE.start_main_~i~0#1_668| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2024-11-28 04:15:28,579 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1796 Int) (v_ArrVal_1798 Int) (|v_ULTIMATE.start_main_~i~0#1_668| Int) (v_ArrVal_1800 Int) (|v_ULTIMATE.start_main_~i~0#1_667| Int) (|v_ULTIMATE.start_main_~i~0#1_669| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_669| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (store (store (store (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|) 3) (+ (* |v_ULTIMATE.start_main_~i~0#1_669| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1796) (+ (* |v_ULTIMATE.start_main_~i~0#1_668| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1798) (+ (* |v_ULTIMATE.start_main_~i~0#1_667| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1800) (+ 28 |c_ULTIMATE.start_main_~a~0#1.offset|)) 3) (< |v_ULTIMATE.start_main_~i~0#1_667| (+ |v_ULTIMATE.start_main_~i~0#1_668| 1)) (< |v_ULTIMATE.start_main_~i~0#1_668| (+ |v_ULTIMATE.start_main_~i~0#1_669| 1)))) is different from false [2024-11-28 04:16:27,626 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_671| Int) (|v_ULTIMATE.start_main_~i~0#1_670| Int) (v_ArrVal_1796 Int) (v_ArrVal_1798 Int) (|v_ULTIMATE.start_main_~i~0#1_668| Int) (v_ArrVal_1800 Int) (|v_ULTIMATE.start_main_~i~0#1_667| Int) (|v_ULTIMATE.start_main_~i~0#1_669| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_669| (+ |v_ULTIMATE.start_main_~i~0#1_670| 1)) (< |v_ULTIMATE.start_main_~i~0#1_671| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (< |v_ULTIMATE.start_main_~i~0#1_670| (+ |v_ULTIMATE.start_main_~i~0#1_671| 1)) (< |v_ULTIMATE.start_main_~i~0#1_667| (+ |v_ULTIMATE.start_main_~i~0#1_668| 1)) (= 3 (select (store (store (store (store (store (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|) 3) (+ (* |v_ULTIMATE.start_main_~i~0#1_671| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) 3) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_670| 4)) 3) (+ (* |v_ULTIMATE.start_main_~i~0#1_669| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1796) (+ (* |v_ULTIMATE.start_main_~i~0#1_668| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1798) (+ (* |v_ULTIMATE.start_main_~i~0#1_667| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1800) (+ 28 |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_668| (+ |v_ULTIMATE.start_main_~i~0#1_669| 1)))) is different from false [2024-11-28 04:16:27,687 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 58 treesize of output 56 [2024-11-28 04:16:27,706 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 408470 treesize of output 407446 [2024-11-28 04:16:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 203 proven. 224 refuted. 0 times theorem prover too weak. 72 trivial. 75 not checked. [2024-11-28 04:16:29,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867860294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:29,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:16:29,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 26, 26] total 81 [2024-11-28 04:16:29,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253582776] [2024-11-28 04:16:29,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:29,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-28 04:16:29,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:29,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-28 04:16:29,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=5376, Unknown=10, NotChecked=462, Total=6480 [2024-11-28 04:16:29,644 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 81 states, 81 states have (on average 2.728395061728395) internal successors, (221), 81 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:36,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:43,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:01,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:05,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:07,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:09,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:10,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:12,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:28,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:29,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:32,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:34,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:36,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:38,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:40,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:41,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:51,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:53,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:54,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:56,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:58,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:59,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:01,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:03,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:10,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:12,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:14,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:15,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:18,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:19,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:21,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:23,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:24,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:26,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:27,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:33,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:35,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:37,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:18:37,218 INFO L93 Difference]: Finished difference Result 202 states and 232 transitions. [2024-11-28 04:18:37,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 04:18:37,219 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.728395061728395) internal successors, (221), 81 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-28 04:18:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:18:37,220 INFO L225 Difference]: With dead ends: 202 [2024-11-28 04:18:37,220 INFO L226 Difference]: Without dead ends: 172 [2024-11-28 04:18:37,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 3 IntricatePredicates, 4 DeprecatedPredicates, 3821 ImplicationChecksByTransitivity, 136.3s TimeCoverageRelationStatistics Valid=1456, Invalid=11405, Unknown=33, NotChecked=678, Total=13572 [2024-11-28 04:18:37,223 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 329 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 61 mSolverCounterUnsat, 38 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 3162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 38 IncrementalHoareTripleChecker+Unknown, 272 IncrementalHoareTripleChecker+Unchecked, 76.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:18:37,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 125 Invalid, 3162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2791 Invalid, 38 Unknown, 272 Unchecked, 76.4s Time] [2024-11-28 04:18:37,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-28 04:18:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 100. [2024-11-28 04:18:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0909090909090908) internal successors, (108), 99 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:37,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2024-11-28 04:18:37,275 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 95 [2024-11-28 04:18:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:18:37,276 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2024-11-28 04:18:37,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.728395061728395) internal successors, (221), 81 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2024-11-28 04:18:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:18:37,276 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:18:37,277 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:18:37,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-28 04:18:37,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:18:37,477 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:18:37,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1821854519, now seen corresponding path program 21 times [2024-11-28 04:18:37,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:37,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780677796] [2024-11-28 04:18:37,478 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:18:37,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:37,546 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-28 04:18:37,546 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:18:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 104 proven. 359 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-28 04:18:39,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:39,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780677796] [2024-11-28 04:18:39,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780677796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:18:39,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852714691] [2024-11-28 04:18:39,095 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:18:39,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:18:39,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:18:39,097 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:18:39,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 04:18:39,800 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-28 04:18:39,800 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:18:39,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 04:18:39,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:18:39,812 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 16 treesize of output 12 [2024-11-28 04:18:39,826 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 [2024-11-28 04:18:39,839 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 [2024-11-28 04:18:39,853 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 [2024-11-28 04:18:39,867 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 [2024-11-28 04:18:39,881 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 [2024-11-28 04:18:39,977 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 36 treesize of output 16 [2024-11-28 04:18:40,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:18:40,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-28 04:18:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 104 proven. 343 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-28 04:18:40,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:18:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 104 proven. 343 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-28 04:18:41,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852714691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:18:41,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:18:41,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 26 [2024-11-28 04:18:41,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943188855] [2024-11-28 04:18:41,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:18:41,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:18:41,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:41,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:18:41,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:18:41,084 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:19:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:19,113 INFO L93 Difference]: Finished difference Result 462 states and 528 transitions. [2024-11-28 04:19:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 273 states. [2024-11-28 04:19:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-28 04:19:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:19,116 INFO L225 Difference]: With dead ends: 462 [2024-11-28 04:19:19,116 INFO L226 Difference]: Without dead ends: 458 [2024-11-28 04:19:19,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 191 SyntacticMatches, 3 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29568 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=10742, Invalid=75400, Unknown=0, NotChecked=0, Total=86142 [2024-11-28 04:19:19,123 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 6064 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 6074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:19,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 73 Invalid, 6074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 6064 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2024-11-28 04:19:19,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-28 04:19:19,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 104. [2024-11-28 04:19:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0970873786407767) internal successors, (113), 103 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:19:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions. [2024-11-28 04:19:19,175 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 99 [2024-11-28 04:19:19,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:19,175 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions. [2024-11-28 04:19:19,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:19:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions. [2024-11-28 04:19:19,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 04:19:19,176 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:19,176 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:19,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 04:19:19,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:19,377 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:19,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:19,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1780825137, now seen corresponding path program 22 times [2024-11-28 04:19:19,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:19,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415589623] [2024-11-28 04:19:19,377 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:19:19,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:19,411 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:19:19,411 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:19:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 105 proven. 433 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-28 04:19:21,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:21,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415589623] [2024-11-28 04:19:21,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415589623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:19:21,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760190985] [2024-11-28 04:19:21,148 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:19:21,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:21,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:21,150 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:21,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 04:19:21,376 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:19:21,377 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:19:21,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 04:19:21,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:21,390 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 16 treesize of output 12 [2024-11-28 04:19:21,403 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 [2024-11-28 04:19:21,416 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 [2024-11-28 04:19:21,428 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 [2024-11-28 04:19:21,440 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 [2024-11-28 04:19:21,454 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 [2024-11-28 04:19:21,467 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 [2024-11-28 04:19:21,563 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 36 treesize of output 16 [2024-11-28 04:19:22,396 INFO L349 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2024-11-28 04:19:22,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 27 [2024-11-28 04:19:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 207 proven. 315 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-28 04:19:22,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:19:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 105 proven. 417 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-28 04:19:24,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760190985] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:19:24,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:19:24,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 45 [2024-11-28 04:19:24,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898761795] [2024-11-28 04:19:24,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:19:24,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 04:19:24,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:24,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 04:19:24,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1802, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:19:24,682 INFO L87 Difference]: Start difference. First operand 104 states and 113 transitions. Second operand has 45 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:19:28,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:21:22,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:22,104 INFO L93 Difference]: Finished difference Result 846 states and 976 transitions. [2024-11-28 04:21:22,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 531 states. [2024-11-28 04:21:22,105 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-28 04:21:22,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:22,109 INFO L225 Difference]: With dead ends: 846 [2024-11-28 04:21:22,109 INFO L226 Difference]: Without dead ends: 842 [2024-11-28 04:21:22,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 182 SyntacticMatches, 3 SemanticMatches, 569 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122702 ImplicationChecksByTransitivity, 83.9s TimeCoverageRelationStatistics Valid=30948, Invalid=294522, Unknown=0, NotChecked=0, Total=325470 [2024-11-28 04:21:22,124 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 32 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 16423 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 16433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 16423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:22,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 106 Invalid, 16433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 16423 Invalid, 0 Unknown, 0 Unchecked, 33.1s Time] [2024-11-28 04:21:22,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2024-11-28 04:21:22,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 108. [2024-11-28 04:21:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.102803738317757) internal successors, (118), 107 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:21:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2024-11-28 04:21:22,218 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 103 [2024-11-28 04:21:22,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:22,218 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2024-11-28 04:21:22,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:21:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2024-11-28 04:21:22,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:21:22,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:22,219 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:22,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-28 04:21:22,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:22,420 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:22,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:22,420 INFO L85 PathProgramCache]: Analyzing trace with hash -151007335, now seen corresponding path program 23 times [2024-11-28 04:21:22,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:22,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6659115] [2024-11-28 04:21:22,420 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:21:22,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:22,475 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-28 04:21:22,476 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:21:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 561 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:21:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6659115] [2024-11-28 04:21:24,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6659115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:21:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711783321] [2024-11-28 04:21:24,561 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:21:24,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:24,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:21:24,563 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:21:24,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 04:21:50,521 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-28 04:21:50,521 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:21:50,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:21:50,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:21:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 561 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:21:52,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:21:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 561 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:21:54,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711783321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:21:54,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:21:54,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 57 [2024-11-28 04:21:54,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738517058] [2024-11-28 04:21:54,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:21:54,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-28 04:21:54,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:54,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-28 04:21:54,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=776, Invalid=2416, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 04:21:54,587 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand has 57 states, 57 states have (on average 3.3508771929824563) internal successors, (191), 57 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:21:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:57,812 INFO L93 Difference]: Finished difference Result 671 states and 795 transitions. [2024-11-28 04:21:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 04:21:57,813 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.3508771929824563) internal successors, (191), 57 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-28 04:21:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:57,814 INFO L225 Difference]: With dead ends: 671 [2024-11-28 04:21:57,814 INFO L226 Difference]: Without dead ends: 305 [2024-11-28 04:21:57,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 165 SyntacticMatches, 27 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2918 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1658, Invalid=6174, Unknown=0, NotChecked=0, Total=7832 [2024-11-28 04:21:57,816 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 602 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:57,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 51 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:21:57,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-28 04:21:57,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 114. [2024-11-28 04:21:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0973451327433628) internal successors, (124), 113 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:21:57,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2024-11-28 04:21:57,906 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 107 [2024-11-28 04:21:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:57,906 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2024-11-28 04:21:57,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.3508771929824563) internal successors, (191), 57 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:21:57,906 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2024-11-28 04:21:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 04:21:57,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:57,907 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:57,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 04:21:58,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 04:21:58,107 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:58,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:58,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1294247589, now seen corresponding path program 24 times [2024-11-28 04:21:58,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:58,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658159061] [2024-11-28 04:21:58,108 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:21:58,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:58,233 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-28 04:21:58,233 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:22:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 165 proven. 685 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:03,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:03,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658159061] [2024-11-28 04:22:03,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658159061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:22:03,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398116356] [2024-11-28 04:22:03,323 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:22:03,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:22:03,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:22:03,325 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:22:03,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 04:22:08,767 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-28 04:22:08,767 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:22:08,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-28 04:22:08,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:22:09,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:22:10,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:10,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 04:22:10,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:10,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 04:22:10,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:10,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 04:22:10,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:10,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 04:22:10,769 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-28 04:22:10,769 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 27 treesize of output 15 [2024-11-28 04:22:10,960 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-28 04:22:10,960 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 31 treesize of output 19 [2024-11-28 04:22:11,168 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-28 04:22:11,168 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 31 treesize of output 19 [2024-11-28 04:22:11,382 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-28 04:22:11,383 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 31 treesize of output 19 [2024-11-28 04:22:13,531 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 11 [2024-11-28 04:22:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 150 proven. 700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:15,731 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:22:20,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:22:20,423 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 20 treesize of output 16 [2024-11-28 04:22:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 425 proven. 419 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:22:20,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398116356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:22:20,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:22:20,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 41, 39] total 103 [2024-11-28 04:22:20,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520219372] [2024-11-28 04:22:20,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:22:20,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-28 04:22:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:20,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-28 04:22:20,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1409, Invalid=9097, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 04:22:20,507 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 103 states, 103 states have (on average 2.7572815533980584) internal successors, (284), 103 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:31,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:22:31,641 INFO L93 Difference]: Finished difference Result 216 states and 247 transitions. [2024-11-28 04:22:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-28 04:22:31,642 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.7572815533980584) internal successors, (284), 103 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-28 04:22:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:22:31,643 INFO L225 Difference]: With dead ends: 216 [2024-11-28 04:22:31,643 INFO L226 Difference]: Without dead ends: 146 [2024-11-28 04:22:31,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 161 SyntacticMatches, 5 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7680 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=3042, Invalid=20828, Unknown=0, NotChecked=0, Total=23870 [2024-11-28 04:22:31,645 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 203 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:22:31,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 143 Invalid, 3883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3836 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 04:22:31,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-28 04:22:31,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2024-11-28 04:22:31,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 117 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:31,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2024-11-28 04:22:31,768 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 113 [2024-11-28 04:22:31,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:22:31,768 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2024-11-28 04:22:31,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.7572815533980584) internal successors, (284), 103 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2024-11-28 04:22:31,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 04:22:31,769 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:22:31,769 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:31,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 04:22:31,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 04:22:31,970 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:22:31,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:31,970 INFO L85 PathProgramCache]: Analyzing trace with hash -763908339, now seen corresponding path program 25 times [2024-11-28 04:22:31,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:31,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319188743] [2024-11-28 04:22:31,970 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:22:31,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 565 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:34,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:34,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319188743] [2024-11-28 04:22:34,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319188743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:22:34,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461618507] [2024-11-28 04:22:34,413 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:22:34,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:22:34,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:22:34,415 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:22:34,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 04:22:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:34,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 04:22:34,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:22:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 630 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:36,946 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:22:38,538 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 630 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:38,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461618507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:22:38,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:22:38,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-11-28 04:22:38,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267442412] [2024-11-28 04:22:38,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:22:38,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 04:22:38,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:38,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 04:22:38,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=2619, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 04:22:38,541 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 59 states, 59 states have (on average 3.305084745762712) internal successors, (195), 59 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:40,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:22:40,780 INFO L93 Difference]: Finished difference Result 551 states and 652 transitions. [2024-11-28 04:22:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 04:22:40,781 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.305084745762712) internal successors, (195), 59 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-28 04:22:40,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:22:40,783 INFO L225 Difference]: With dead ends: 551 [2024-11-28 04:22:40,783 INFO L226 Difference]: Without dead ends: 311 [2024-11-28 04:22:40,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 179 SyntacticMatches, 35 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2655 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1347, Invalid=4353, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 04:22:40,784 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 307 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:22:40,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 50 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:22:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-28 04:22:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 120. [2024-11-28 04:22:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0924369747899159) internal successors, (130), 119 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2024-11-28 04:22:40,879 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 117 [2024-11-28 04:22:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:22:40,880 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2024-11-28 04:22:40,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.305084745762712) internal successors, (195), 59 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2024-11-28 04:22:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 04:22:40,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:22:40,881 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:40,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 04:22:41,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:22:41,082 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:22:41,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash 587941905, now seen corresponding path program 26 times [2024-11-28 04:22:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:41,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256805718] [2024-11-28 04:22:41,082 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:22:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:41,127 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:22:41,127 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:22:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 256 proven. 698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:44,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256805718] [2024-11-28 04:22:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256805718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:22:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030842674] [2024-11-28 04:22:44,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:22:44,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:22:44,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:22:44,981 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:22:44,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca5112b-b8ca-4cf8-8076-296873445438/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 04:22:45,262 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:22:45,262 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:22:45,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-28 04:22:45,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:22:46,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:22:46,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:46,405 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 21 treesize of output 20 [2024-11-28 04:22:46,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:46,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:46,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:46,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:22:46,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-28 04:22:46,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:46,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:46,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:46,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:46,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:46,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:46,916 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:22:46,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-28 04:22:47,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:22:47,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-28 04:22:47,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:47,731 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:22:47,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-28 04:22:48,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:48,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:22:48,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-28 04:22:49,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:49,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:22:49,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 81 treesize of output 83 [2024-11-28 04:22:50,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:50,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:50,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:50,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:50,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:50,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:50,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:50,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:50,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:50,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:50,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:22:51,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:22:51,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 81 treesize of output 83 [2024-11-28 04:23:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 387 proven. 439 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-28 04:23:18,835 INFO L312 TraceCheckSpWp]: Computing backward predicates...